EXHIBIT 10.2
                                                                EXECUTION COPY

                                 $100,000,000

                               CREDIT AGREEMENT

                           Dated as of July 12, 1996

                                     Among

                             PSC ACQUISITION, INC.

                                  as Borrower

                                     and

                                   PSC INC.

                                 as Guarantor

                                      and

                              THE INITIAL LENDERS
                                  NAMED HEREIN

                              as Initial Lenders
                                  FLEET BANK
                           as Initial Issuing Bank,
                                      and
                                  FLEET BANK
                            as Administrative Agent






                       T A B L E   O F   C O N T E N T S


Section                                                                   Page

                                   ARTICLE I

                       DEFINITIONS AND ACCOUNTING TERMS

      1.01.  Certain Defined Terms.........................................  2
      1.02.  Computation of Time Periods................................... 27
      1.03.  Accounting Terms.............................................. 27

                                  ARTICLE II

                       AMOUNTS AND TERMS OF THE ADVANCES
                           AND THE LETTERS OF CREDIT

      2.01.  The Advances.................................................. 27
      2.02.  Making the Advances........................................... 29
      2.03.  Issuance of and Drawings and
               Reimbursement Under Letters of Credit .....................  31
      2.04.  Repayment of Advances......................................... 33
      2.05.  Termination or Reduction of the Commitments................... 36
      2.06.  Prepayments................................................... 36
      2.07.  Interest...................................................... 39





Section                                                                   Page


      2.08.  Fees.......................................................... 40
      2.09.  Conversion of Advances........................................ 40
      2.10.  Increased Costs, Etc.......................................... 41
      2.11.  Payments and Computations..................................... 43
      2.12.  Taxes......................................................... 44
      2.13.  Sharing of Payments, Etc...................................... 46
      2.14.  Use of Proceeds............................................... 47
      2.15.  Defaulting Lenders............................................ 47

                                  ARTICLE III

                             CONDITIONS OF LENDING

      3.01.  Conditions Precedent to Initial Extension of Credit........... 49
      3.02.  Conditions Precedent to Each Borrowing and Issuance........... 57
      3.03.  Determinations Under Section 3.01............................. 58

                                  ARTICLE IV

                        REPRESENTATIONS AND WARRANTIES

      4.01.  Representations and Warranties of PSC and the Borrower........ 58





Section                                                                   Page


                                   ARTICLE V

                       COVENANTS OF PSC AND THE BORROWER
      5.01.  Affirmative Covenants......................................... 65
      5.02.  Negative Covenants............................................ 70
      5.03.  Reporting Requirements........................................ 77
      5.04.  Financial Covenants........................................... 81

                                  ARTICLE VI

                               EVENTS OF DEFAULT

      6.01.  Events of Default............................................. 84
      6.02.  Actions in Respect of the Letters of Credit upon Default...... 88

                                  ARTICLE VII

                           The Administrative Agent

      7.01.  Authorization and Action...................................... 88
      7.02.  Administrative Agent's Reliance, Etc.......................... 88
      7.03.  Fleet and Affiliates.......................................... 89
      7.04.  Lender Party Credit Decision.................................. 89




Section                                                                   Page


      7.05.  Indemnification............................................... 89
      7.06.  Successor Administrative Agents............................... 91

                                 ARTICLE VIII

                                 MISCELLANEOUS

      8.01.  Amendments, Etc............................................... 92
      8.02.  Notices, Etc.................................................. 93
      8.03.  No Waiver; Remedies........................................... 93
      8.04.  Costs and Expenses............................................ 93
      8.05.  Right of Set-off.............................................. 95
      8.06.  Binding Effect................................................ 95
      8.07.  Assignments and Participations................................ 95
      8.08.  Execution in Counterparts..................................... 98
      8.09.  No Liability of the Issuing Bank.............................. 98
      8.10.  Confidentiality............................................... 99
      8.11.  Jurisdiction, Etc............................................. 99
      8.12.  Governing Law................................................. 99
      8.13.  Waiver of Jury Trial.......................................... 99

                                  ARTICLE IX




Section                                                                   Page


                                 PSC GUARANTY

      9.01.  PSC Guaranty..................................................100
      9.02.  Guaranty Absolute.............................................100
      9.03.  Waivers and Acknowledgments...................................101
      9.04.  Subrogation...................................................102
      9.05.  Continuing Guarantee; Assignments.............................102




SCHEDULES

Schedule I ...................  Commitments and Applicable Lending Offices
Schedule II ..................  Foreign Subsidiaries
Schedule III .................  Pro Forma EBITDA
Schedule 3.01(g) .............  Disclosed Litigation
Schedule 3.01(k) .............  Hedge Agreements
Schedule 3.01(l)(vi) .........  States in which Loan Parties are
                                   Qualified to do Business
Schedule 3.01(l)(xi) .........  Mortgages
Schedule 3.01 (l)(xvii) ......  Environmental Assessment Reports
Schedule 4.01(b) .............  Subsidiaries
Schedule 4.01(d) .............  Required Authorizations and Approvals
Schedule 4.01(n) .............  Plans, Multiemployer Plans and Welfare Plans
Schedule 4.01(w) .............  Open Tax Years
Schedule 4.01(dd) ............  Existing Debt (other than Surviving Debt)
Schedule 4.01(ee) ............  Surviving Debt
Schedule 4.01(ff) ............  Owned Real Estate
Schedule 4.01(gg) ............  Leased Real Estate
Schedule 4.01(hh) ............  Material Contracts
Schedule 4.01(ii) ............  Investments
Schedule 4.01(jj) ............  Intellectual Property
Schedule 5.02(a)(iii) ........  Liens



EXHIBITS

Exhibit A-1 ..................  Form of Term A Note
Exhibit A-2 ..................  Form of Term B Note
Exhibit A-3 ..................  Form of Working Capital Note
Exhibit B ....................  Form of Notice of Borrowing
Exhibit C ....................  Form of Assignment and Acceptance
Exhibit D ....................  Form of Security Agreement
Exhibit E ....................  Form of Intellectual Property Security Agreement
Exhibit F-1 ..................  Form of New York Mortgage
Exhibit F-2 ..................  Form of Oregon Deed of Trust
Exhibit G ....................  Form of Subsidiary Guaranty
Exhibit H ....................  Form of Assumption Agreement
Exhibit I ....................  Form of Solvency Certificate
Exhibit J ....................  Form of Opinion of Borrower's Counsel
Exhibit K ....................  Form of Opinion of Local Counsel Opinion
Exhibit L ....................  Form of Opinion of Intellectual Property Counsel
Exhibit M ....................  Form of Borrowing Base Certificate





                               CREDIT AGREEMENT


     CREDIT AGREEMENT dated as of July 12, 1996 among PSC  Acquisition,  Inc., a
Delaware  corporation  ("PSC  Acquisition"  and,  together  with  the  Surviving
Corporation  (as  hereinafter  defined)  following  the Merger  (as  hereinafter
defined),  the  "Borrower"),  PSC  Inc.,  a New  York  corporation  ("PSC"),  as
Guarantor,  the banks,  financial  institutions and other institutional  lenders
listed on the  signature  pages  hereof as the  Initial  Lenders  (the  "Initial
Lenders"),  the Initial  Issuing Bank (as  hereinafter  defined)  (the  "Initial
Issuing  Bank"),  the  Swing  Line Bank (as  hereinafter  defined),  Fleet  Bank
("Fleet"),  as  administrative  agent  (together  with any  successor  appointed
pursuant to Article VII,  the "Administrative Agent") for the Lender Parties (as
hereinafter defined).

PRELIMINARY STATEMENTS:

     (1) PSC  Acquisition  was  organized by PSC to acquire  certain  assets and
businesses of  Spectra-Physics,  Inc., a Delaware  corporation  (the "Company"),
Spectra-Physics  Scanning Systems, Inc., a Delaware corporation ("Scanning") and
T.X.C.O.M., S.A., a French corporation ("TxCom") and other related assets.

     (2) Pursuant to the Asset and Stock Purchase  Agreement dated May 20,  1996
(as amended, supplemented or otherwise modified in accordance with its terms, to
the extent  permitted in  accordance  with the Loan  Documents  (as  hereinafter
defined), the "Purchase Agreement") by and among PSC, Spectra-Physics  Holdings,
S.A., a French  corporation  ("SP Holdings") and the Company,  PSC has agreed to
purchase,   both  directly  and  through  PSC   Acquisition   and  other  direct
wholly-owned Subsidiaries (as hereinafter defined) certain assets and businesses
of  the  Company.  Simultaneously  with  such  purchase,  PSC  Acquisition  will
consummate a merger (the "Merger") with Scanning,  in which Scanning will be the
surviving  corporation (the "Surviving  Corporation").  Upon the consummation of
the  Merger,  the  name  of  the  Surviving   Corporation  will  be  changed  to
SpectraScan, Inc.

     (3) The Borrower has requested that the Lender Parties lend to the Borrower
up to $92,500,000 of the total  Commitments (as  hereinafter  defined) to pay to
the Company the cash  consideration for the assets and businesses of the Company
that  PSC  and  its  direct  wholly-owned   Subsidiaries  are  purchasing,   pay
transaction  fees and expenses,  and that, from time to time, the Lender Parties
lend the remaining  balance of the total  Commitments  to the Borrower and issue
Letters of Credit for the benefit of the Borrower to provide working capital for
the Borrower and its  Subsidiaries.  The Lender  Parties  have  indicated  their
willingness  to agree to lend such amounts on the terms and  conditions  of this
Agreement.

     NOW,  THEREFORE,  in  consideration  of the  premises  and  of  the  mutual
covenants and agreements  contained  herein,  the parties hereto hereby agree as
follows:



                                    Article I

                        Definitions And Accounting Terms

     SECTION  1.01.  Certain  Defined  Terms.  As used in  this  Agreement,  the
following  terms shall have the following  meanings (such meanings to be equally
applicable to both the singular and plural forms of the terms defined):

          "Acquired  Assets and Liabilities"  means the Scanning Shares,  the US
     Assets,  the TxCom Assets and Liabilities and the International  Assets and
     Liabilities (each as defined in the Purchase Agreement).

          "Acquisition"  means the  transactions  contemplated  by the  Purchase
     Agreement.

          "Administrative  Agent" has the  meaning  specified  in the recital of
     parties to this Agreement.

          "Administrative   Agent's   Account"   means   the   account   of  the
     Administrative  Agent maintained by the Administrative  Agent with Fleet at
     its office at One East  Avenue,  Rochester,  New York  14638,  Account  No.
     1983580, Attention: Jeffrey Kenefick.

          "Advance" means a Term A Advance,  a Term B Advance, a Working Capital
     Advance, a Swing Line Advance or a Letter of Credit Advance.

          "Affiliate" means, as to any Person,  any other Person that,  directly
     or indirectly,  controls,  is controlled by or is under common control with
     such Person or is a director  or officer of such  Person.  For  purposes of
     this  definition,  the term "control"  (including the terms  "controlling,"
     "controlled  by" and "under  common  control  with") of a Person  means the
     possession,  direct  or  indirect,  of the  power to vote 5% or more of the
     Voting  Stock of such  Person or to direct  or cause the  direction  of the
     management  and policies of such Person,  whether  through the ownership of
     Voting Stock, by contract or otherwise.

          "Applicable  Lending Office" means, with respect to each Lender Party,
     such Lender  Party's  Domestic  Lending  Office in the case of a Prime Rate
     Advance and such Lender Party's  Eurodollar Lending Office in the case of a
     Eurodollar Rate Advance.

          "Applicable  Margin"  means at any time and from time to time (a) with
     respect to the Term B Facility  1.75% per annum for Prime Rate Advances and
     3.25% per annum for  Eurodollar  Rate  Advances and (b) with respect to the
     Term A Facility  and the  Working  Capital  Facility,  (i) prior to July 1,
     1997,  1.25%  per annum for  Prime  Rate  Advances  and 2.75% per annum for
     Eurodollar Rate Advances and (ii) from and after July 1, 1997, a percentage
     per annum  determined  by  reference  to the Total  Debt Ratio as set forth
     below:



                             Term A Facility and
                               Working Capital       Term A Facility and Working
        Total Debt                 Facility               Capital Facility
          Ratio              Prime Rate Advances      Eurodollar Rate Advances

Level I:
 a ratio greater than               1.25%                       2.75%
3.5:1

Level II:
a ratio of
3.5:1 or less
but at least 3.0:1                  1.00%                       2.50%

Level III:
a ratio of less than
3.0:1 but at least 2.5:1             .75%                       2.25%

Level IV:
a ratio of less than
2.5:1                                .50%                       2.00%


     The  Applicable  Margin for each Prime Rate Advance  shall be determined by
     reference  to the  ratio in  effect  from  time to time and the  Applicable
     Margin for each Eurodollar Rate Advance shall be determined by reference to
     the  ratio in effect on the  first  day of each  Interest  Period  for such
     Advance;  provided,  however,  that (A) no change in the Applicable  Margin
     shall be effective  until three  Business  Days after the date on which the
     Administrative    Agent   receives   financial   statements   pursuant   to
     Section 5.03(c)  or (d) and a certificate of the chief financial officer of
     PSC  demonstrating  such  ratio and  (B) if  PSC has not  submitted  to the
     Administrative  Agent  the  information  described  in  clause (A)  of this
     proviso as and when required under Section  5.03(c) or (d), as the case may
     be,  the  Applicable  Margin  shall  be at  Level  I for so  long  as  such
     information has not been received by the Administrative Agent.

          "Appropriate  Lender" means,  at any time,  with respect to (a) any of
     the Term A Facility, the Term B Facility or the Working Capital Facility, a
     Lender that has a Commitment  with  respect to such  Facility at such time,
     (b) the  Letter of Credit  Facility,  (i) the  Issuing Bank and (ii) if the
     other Working Capital Lenders have made Letter of Credit Advances  pursuant
     to  Section 2.03(c)  that are  outstanding  at such  time,  each such other
     Working Capital Lender and (c) the Swing Line Facility,  (i) the Swing Line
     Bank and (ii) if the other  Working  Capital  Lenders  have made Swing Line
     Advances  pursuant to Section  2.02(b) that are  outstanding  at such time,
     each such other Working Capital Lender.

          "Assignment and Acceptance" means an assignment and acceptance entered
     into by a Lender  Party  and an  Eligible  Assignee,  and  accepted  by the
     Administrative  Agent, in accordance with Section 8.07 and in substantially
     the form of Exhibit C hereto.




          "Assumption   Agreement"   has  the  meaning   specified   in  Section
     3.01(l)(xiv).

          "Available  Amount" of any Letter of Credit  means,  at any time,  the
     maximum  amount  available  to be drawn under such Letter of Credit at such
     time (assuming compliance at such time with all conditions to drawing).

          "Bank  Hedge  Agreement"  means  any  interest  rate  Hedge  Agreement
     required or permitted  under  Article V that is entered into by and between
     the Borrower and any Lender Party.

          "Bond  Trustee" means The Oregon Bank in its capacity as trustee under
     the IRB Documents.

          "Borrower" has the meaning specified in the recital of parties to this
     Agreement.

          "Borrower's  Account" means the account of the Borrower  maintained by
     the Borrower with M&T at its office at 44 Exchange Street,  Rochester,  New
     York 14614, Account No. 15976632.

          "Borrowing" means, a Term A Borrowing,  a Term B Borrowing,  a Working
     Capital Borrowing or a Swing Line Borrowing.

          "Borrowing  Base" on any date means the sum of (x) 80% of the value of
     the Eligible Receivables arising out of sales to account debtors within the
     United States and (y) 60% of the value of the Eligible  Receivables arising
     out of sales to account debtors outside the United States,  in each case as
     set forth in the most recent  Borrowing Base  Certificate  delivered to the
     Administrative Agent pursuant to the terms of this Agreement on or prior to
     such date.

          "Borrowing Base Certificate"  means a certificate in substantially the
     form of Exhibit M hereto,  duly certified by the chief financial officer of
     the Borrower.

          "Borrowing Base Deficiency" means, at any time, the failure of (a) the
     Borrowing  Base at such  time to equal or  exceed  (b) the  sum of  (i) the
     aggregate  principal amount of the Working Capital Advances,  the Letter of
     Credit  Advances and the Swing Line Advances  outstanding at such time plus
     (ii) the aggregate Available Amount under all Letters of Credit outstanding
     at such time.

          "Business Day" means a day of the year on which banks are not required
     or authorized by law to close in Rochester, New York and, if the applicable
     Business Day relates to any Eurodollar Rate Advances, on which dealings are
     carried on in the London interbank market.

          "Capital  Expenditures"  means, for any Person for any period, the sum
     of all expenditures made, directly or indirectly,  by such Person or any of



     its  Subsidiaries  during such period for  equipment,  fixed  assets,  real
     property or improvements,  or for replacements or substitutions therefor or
     additions  thereto,  that have been or should be, in accordance  with GAAP,
     reflected as additions  to property,  plant or equipment on a  Consolidated
     balance sheet of such Person.

          "Capitalized  Leases" means all leases that have been or should be, in
     accordance with GAAP, recorded as capitalized leases.

          "Cash Equivalents" means any of the following,  to the extent owned by
     the Borrower or any of its  Subsidiaries  free and clear of all Liens other
     than Liens created under the Collateral Documents:  (a) readily  marketable
     direct  obligations of the Government of the United States or any agency or
     instrumentality  thereof or obligations  unconditionally  guaranteed by the
     full  faith and credit of the  Government  of the  United  States  having a
     maturity  of not greater  than 360 days from the date of issuance  thereof,
     (b) insured  certificates  of deposit of or time deposits having a maturity
     of not  greater  than 360 days from the date of issuance  thereof  with any
     commercial  bank that is a Lender Party or a member of the Federal  Reserve
     System,  issues (or the parent of which issues)  commercial  paper rated as
     described in clause (c),  is organized  under the laws of the United States
     or any State  thereof and has  combined  capital and surplus of at least $1
     billion or  (c) commercial  paper having a maturity of not greater than 180
     days from the date of issuance  thereof in an  aggregate  amount of no more
     than  $2,500,000  per  issuer  outstanding  at  any  time,  issued  by  any
     corporation  organized under the laws of any State of the United States and
     rated  at  least  "Prime-1"  (or the  then  equivalent  grade)  by  Moody's
     Investors  Service,  Inc.  or  "A-1"  (or the  then  equivalent  grade)  by
     Standard & Poor's Ratings Group.

          "CERCLA" means the Comprehensive Environmental Response,  Compensation
     and Liability Act of 1980, as amended from time to time.

          "CERCLIS" means the Comprehensive Environmental Response, Compensation
     and  Liability  Information  System  maintained  by the U.S.  Environmental
     Protection Agency.

          "Co-Arrangers" means Fleet and M&T.

          "Collateral"  means all  "Collateral"  referred  to in the  Collateral
     Documents  and all other  property  that is or is intended to be subject to
     any  Lien in favor  of the  Administrative  Agent  for the  benefit  of the
     Secured Parties.

          "COMIDA" means the County of Monroe Industrial Development Agency.

          "Collateral Documents" means the Security Agreement,  the Intellectual
     Property Security  Agreement,  the Mortgages,  and any other agreement that
     creates or purports to create a Lien in favor of the  Administrative  Agent
     for the benefit of the Secured Parties.

          "Commitment" means a Term A Commitment, a Term B Commitment, a Working
     Capital Commitment or a Letter of Credit Commitment.


          "Commitment  Fee  Percentage"  means at any time and from time to time
     (a) prior to July 1,  1997,  0.50% per annum and (b) from and after July 1,
     1997 a percentage per annum determined by reference to the Total Debt Ratio
     as set forth below:


          Total Debt Ratio              Commitment Fee Percentage

Level I: .......................................    .50
a ratio of greater
than 3.5:1


Level II: ......................................    .50
a ratio of 3.5:1
or less but at least
3.0:1

Level III: .....................................   .375
a ratio of less than
3.0:1 but at least 2.5:1

Level IV: ......................................   .375
a ratio of less
than 2.5:1



     ; provided,  however,  that (A) no change in the  Commitment Fee Percentage
     shall be effective  until three  Business  Days after the date on which the
     Administrative  Agent  receives  financial  statements  pursuant to Section
     5.03(c)  or (d) and a  certificate  of the chief  financial  officer of PSC
     demonstrating  such  ratio  and  (B)  if  PSC  has  not  submitted  to  the
     Administrative  Agent  the  information  described  in  clause  (A) of this
     proviso as and when required under Section  5.03(c) or (d), as the case may
     be, the Commitment  Fee Percentage  shall be at Level I for so long as such
     information has not been received by the Administrative Agent.

          "Company" has the meaning specified in the Preliminary Statements.

          "Confidential   Information"   means  information  that  the  Borrower
     furnishes  to the  Administrative  Agent or any  Lender  Party in a writing
     designated as confidential,  but does not include any such information that
     is or becomes generally available to the public other than as a result of a
     breach by the  Administrative  Agent or any Lender Party of its obligations
     hereunder or that is or becomes  available to the  Administrative  Agent or
     such Lender Party from a source other than the Borrower that is not, to the
     best of the Administrative Agent's or such Lender Party's knowledge, acting
     in violation of a confidentiality agreement with the Borrower.

          "Consolidated"  refers to the consolidation of accounts, in accordance
     with GAAP, of PSC and all of its Subsidiaries.




          "Conversion,"  "Convert" and "Converted" each refer to a conversion of
     Advances  of  one  Type  into  Advances  of  the  other  Type  pursuant  to
     Section 2.09 or 2.10.

          "Current  Assets" of any Person  means all assets of such  Person that
     would,  in  accordance  with GAAP,  be  classified  as current  assets of a
     company  conducting  a  business  the  same as or  similar  to that of such
     Person,  after deducting  adequate reserves in each case in which a reserve
     is proper in accordance with GAAP.

          "Current  Liabilities" of any Person means (a) all Debt of such Person
     except Funded Debt that by its terms is payable on demand or matures within
     one year after the date of  determination  (excluding any Debt renewable or
     extendible, at the option of such Person, to a date more than one year from
     such date or arising  under a revolving  credit or similar  agreement  that
     obligates  the lender or lenders to extend  credit  during a period of more
     than one year from  such  date),  (b) all  amounts  of Funded  Debt of such
     Person  required to be paid or prepaid  within one year after such date and
     (c)  all  other  items  (including  taxes  accrued  as  estimated)  that in
     accordance  with GAAP would be  classified as current  liabilities  of such
     Person.

          "Debt" of any Person means, without duplication,  (a) all indebtedness
     of such Person for borrowed  money,  (b) all Obligations of such Person for
     the  deferred  purchase  price of property  or  services  (other than trade
     payables not overdue by more than 60 days  incurred in the ordinary  course
     of such Person's  business and trade  payables that are being  contested in
     good faith), (c) all Obligations of such Person evidenced by notes,  bonds,
     debentures or other similar instruments, (d) all Obligations of such Person
     created or arising  under any  conditional  sale or other  title  retention
     agreement with respect to property acquired by such Person (even though the
     rights and  remedies of the seller or lender  under such  agreement  in the
     event of default are limited to repossession or sale of such property), (e)
     all Obligations of such Person as lessee under Capitalized  Leases, (f) all
     Obligations,  contingent  or  otherwise,  of such Person under  acceptance,
     letter of credit or similar facilities,  (g) all Obligations of such Person
     to  purchase,  redeem,  retire,  defease or  otherwise  make any payment in
     respect of any capital  stock of or other  ownership or profit  interest in
     such  Person or any other  Person or any  warrants,  rights or  options  to
     acquire such capital  stock,  valued,  in the case of Redeemable  Preferred
     Stock,  at  the  greater  of  its  voluntary  or  involuntary   liquidation
     preference plus accrued and unpaid dividends,  (h) all  Obligations of such
     Person in respect of Hedge  Agreements,  (i) all Debt of others referred to
     in clauses (a) through (h) above or clause (j) below guaranteed directly or
     indirectly in any manner by such Person, or in effect  guaranteed  directly
     or  indirectly  by such Person  through an agreement (i) to pay or purchase
     such Debt or to advance or supply funds for the payment or purchase of such
     Debt, (ii) to purchase, sell or lease (as lessee or lessor) property, or to
     purchase or sell services, primarily for the purpose of enabling the debtor
     to make  payment of such Debt or to assure the holder of such Debt  against
     loss,  (iii) to supply funds to or in any other manner invest in the debtor
     (including  any agreement to pay for property or services  irrespective  of
     whether  such  property is  received  or such  services  are  rendered)  or
     (iv) otherwise to assure a creditor against loss, and (j) all Debt referred
     to in  clauses (a)  through (i) above of another  Person secured by (or for
     which  the  holder  of such  Debt  has an  existing  right,  contingent  or
     otherwise, to be


     secured by) any Lien on property (including,  without limitation,  accounts
     and contract rights) owned by such Person,  even though such Person has not
     assumed or become liable for the payment of such Debt.

          "Default"  means  any  Event  of  Default  or  any  event  that  would
     constitute an Event of Default but for the requirement that notice be given
     or time elapse or both.

          "Defaulted  Advance"  means,  with  respect to any Lender Party at any
     time,  the portion of any Advance  required to be made by such Lender Party
     to the Borrower  pursuant to  Section 2.01 or 2.02 at or prior to such time
     which has not been made by such Lender Party or by the Administrative Agent
     for the account of such Lender Party pursuant to Section 2.02(e) as of such
     time.  In the event that a portion of a Defaulted  Advance  shall be deemed
     made pursuant to  Section 2.15(a),  the remaining portion of such Defaulted
     Advance shall be considered a Defaulted Advance  originally  required to be
     made pursuant to Section 2.01 on the same date as the Defaulted  Advance so
     deemed made in part.

          "Defaulted  Amount"  means,  with  respect to any Lender  Party at any
     time,  any  amount  required  to be  paid  by  such  Lender  Party  to  the
     Administrative Agent or any other Lender Party hereunder or under any other
     Loan  Document  at or prior to such  time  which has not been so paid as of
     such time, including, without limitation, any amount required to be paid by
     such Lender Party to (a) the Swing Line Bank pursuant to Section 2.02(b) to
     purchase a portion of a Swing Line Advance made by the Swing Line Bank, (b)
     the Issuing  Bank  pursuant  to Section  2.03(c) to purchase a portion of a
     Letter of Credit Advance made by the Issuing Bank,  (c) the  Administrative
     Agent pursuant to Section 2.02(e) to reimburse the Administrative Agent for
     the amount of any Advance made by the Administrative  Agent for the account
     of such Lender Party,  (d) any other Lender Party  pursuant to Section 2.13
     to purchase any  participation in Advances owing to such other Lender Party
     and (e) the  Administrative  Agent or the Issuing Bank  pursuant to Section
     7.05 to  reimburse  the  Administrative  Agent or the Issuing Bank for such
     Lender  Party's  ratable  share of any  amount  required  to be paid by the
     Lender Parties to the Administrative  Agent or the Issuing Bank as provided
     therein.  In the event that a portion of a Defaulted Amount shall be deemed
     paid pursuant to Section 2.15(b),  the remaining  portion of such Defaulted
     Amount shall be  considered a Defaulted  Amount  originally  required to be
     paid  hereunder  or under any other Loan  Document  on the same date as the
     Defaulted Amount so deemed paid in part.

          "Defaulting Lender" means, at any time, any Lender Party that, at such
     time, (a) owes a Defaulted  Advance or a Defaulted Amount or (b) shall take
     any  action  or be  the  subject  of any  action  or  proceeding  of a type
     described in Section 6.01(f).

          "Disclosed Litigation" has the meaning specified in Section 3.01(g).

          "Domestic Lending Office" means, with respect to any Lender Party, the
     office of such Lender Party  specified  as its  "Domestic  Lending  Office"
     opposite its name on Schedule I  hereto or in the Assignment and Acceptance



     pursuant  to which it  became a Lender  Party,  as the case may be, or such
     other  office of such Lender  Party as such  Lender  Party may from time to
     time specify to the Borrower and the Administrative Agent.

          "EBITDA" means, for any period, the sum,  determined on a Consolidated
     basis, of (a) net income (or net loss),  (b) interest  expense,  (c) income
     tax expense,  (d) depreciation expense and (e) amortization expense in each
     case of PSC and its  Subsidiaries,  determined in accordance  with GAAP for
     such  period  (excluding,  in the case of the  Fiscal  Quarter in which the
     consummation of the Acquisition  occurs, any restructuring  charge taken by
     PSC and its Subsidiaries, in respect of the Acquisition).

          "Eligible Assignee" means (a) with respect to any Facility (other than
     the  Letter  of Credit  Facility),  (i) a Lender;  (ii) an  Affiliate  of a
     Lender;  (iii) a  commercial  bank  organized  under the laws of the United
     States,  or any  State  thereof,  and  having  total  assets  in  excess of
     $500,000,000; (iv) a savings and loan association or savings bank organized
     under the laws of the United States, or any State thereof, and having total
     assets in excess of $500,000,000; (v) a commercial bank organized under the
     laws of any other  country  that is a member  of the OECD or has  concluded
     special  lending   arrangements  with  the   International   Monetary  Fund
     associated  with  its  General  Arrangements  to  Borrow  or of the  Cayman
     Islands, or a political  subdivision of any such country,  and having total
     assets in excess of $500,000,000,  so long as such bank is acting through a
     branch or agency located in the United States; (vi) the central bank of any
     country that is a member of the OECD;  (vii) a finance  company,  insurance
     company or other  financial  institution  or fund  (whether a  corporation,
     partnership,  trust or other entity) that is engaged in making,  purchasing
     or otherwise  investing in commercial  loans in the ordinary  course of its
     business and having total assets in excess of $500,000,000;  and (viii) any
     other Person approved by the  Administrative  Agent and the Borrower,  such
     approval not to be unreasonably  withheld or delayed,  and (b) with respect
     to the Letter of Credit  Facility,  a Person that is an  Eligible  Assignee
     under  subclause  (iii)  or (v) of  clause  (a) of this  definition  and is
     approved by the Administrative Agent and the Borrower, such approval not to
     be unreasonably  withheld or delayed;  provided,  however, that neither any
     Loan Party nor any  Affiliate of a Loan Party shall  qualify as an Eligible
     Assignee under this definition.

          "Eligible  Receivables"  means  only such  Receivables  of PSC and its
     Subsidiaries as the Administrative Agent, in its reasonable judgment, shall
     from time to time elect to consider  Eligible  Receivables  for purposes of
     this Agreement.  The value of such  Receivables  shall be determined by the
     Administrative  Agent in its reasonable judgment taking into consideration,
     among other factors,  their book value  determined in accordance with GAAP.
     By  way of  example  only,  and  without  limiting  the  discretion  of the
     Administrative  Agent  to  consider  any  Receivables  not  to be  Eligible
     Receivables,  the  Administrative  Agent may consider any of the  following
     classes of Receivables not to be Eligible Receivables:

               (a)  Receivables  that do not  arise  out of  sales  of  goods or
          rendering  of  services  in the  ordinary  course  of  the  Borrower's
          business;



               (b)  Receivables on terms other than those normal or customary in
          the Borrower's business;

               (c) Receivables owing from any Person that is an Affiliate of the
          Borrower;

               (d) In the case of Lazerdata  Holdings Inc. and its  Subsidiaries
          Receivables more than 180 days past original invoice date or more than
          60 days  past  the date  due  and,  in the  case of PSC and its  other
          Subsidiaries,  Receivables  more than 150 days past  original  invoice
          date or more than 60 days past the date due;

               (e)  Receivables  owing from any Person  from which an  aggregate
          amount of more than 50% of the Receivables  owing is more than 60 days
          past due;

               (f)  Receivables  owing from any Person that shall take or be the
          subject  of  any  action  or  proceeding   of  a  type   described  in
          Section 6.01(f);

               (g) Receivables (i) owing from any Person that is also a supplier
          to or creditor of the Borrower unless such Person has waived any right
          of set-off in a reasonably  manner  acceptable  to the  Administrative
          Agent or (ii) representing any  manufacturer's or supplier's  credits,
          discounts,  incentive  plans or  similar  arrangements  entitling  the
          Borrower to discounts on future purchase therefrom;

               (h)  Receivables   arising  out  of  sales  on  a  bill-and-hold,
          guaranteed sale, sale-or-return, sale on approval or consignment basis
          or subject to any right of return, set-off or charge-back;

               (i)  Receivables  owing from an account debtor that is an agency,
          department  or  instrumentality  of the  United  States  or any  State
          thereof unless the Borrower shall have satisfied the  requirements  of
          the  Assignment  of Claims Act of 1940,  as  amended,  and any similar
          State legislation and the Administrative  Agent is satisfied as to the
          absence of set-offs,  counterclaims  and other defenses on the part of
          such account debtor;

               (j)  Receivables  the  full  and  timely  payment  of  which  the
          Administrative  Agent in its reasonable  judgment,  after consultation
          with the Borrower, believes to be doubtful; and

               (k) Receivables in respect of which the Security Agreement, after
          giving effect to the related filings of financing statements that have
          then been made,  if any,  does not or has ceased to create a valid and
          perfected  first  priority  lien or security  interest in favor of the
          Secured Parties securing the Secured Obligations.

          "Environmental  Action" means any action, suit, demand, demand letter,
     claim,  notice of  non-compliance  or  violation,  notice of  liability  or
     potential


     liability,  investigation,  proceeding,  consent order or consent agreement
     relating in any way to any Environmental  Law, any Environmental  Permit or
     Hazardous  Material  or  arising  from  alleged  injury or threat to public
     health and safety or the environment, including, without limitation, (a) by
     any governmental or regulatory authority for enforcement, cleanup, removal,
     response,  remedial or other actions or damages and (b) by any governmental
     or  regulatory   authority  or  third  party  for  damages,   contribution,
     indemnification, cost recovery, compensation or injunctive relief.

          "Environmental  Law"  means  any  federal,  state,  local  or  foreign
     statute,  law, ordinance,  rule,  regulation,  code, order, writ, judgment,
     injunction, decree or judicial or agency interpretation, policy or guidance
     relating  to  pollution  or  protection  of  the   environment  or  natural
     resources,  including,  without  limitation,  those  relating  to the  use,
     handling,   transportation,   treatment,   storage,  disposal,  release  or
     discharge of Hazardous Materials.

          "Environmental  Permit"  means any  permit,  approval,  identification
     number,  license or other  authorization  required under any  Environmental
     Law.

          "ERISA" means the Employee  Retirement Income Security Act of 1974, as
     amended  from time to time,  and the  regulations  promulgated  and rulings
     issued thereunder.

          "ERISA  Affiliate"  means any Person that for  purposes of Title IV of
     ERISA is a member  of the  controlled  group  of any Loan  Party,  or under
     common  control  with any Loan Party,  within the meaning of Section 414 of
     the Internal Revenue Code.

          "ERISA  Event" means (a) (i) the  occurrence  of a  reportable  event,
     within  the  meaning  of Section  4043 of ERISA,  with  respect to any Plan
     unless the 30-day  notice  requirement  with respect to such event has been
     waived by the PBGC, or (ii) the  requirements  of subsection (1) of Section
     4043(b) of ERISA (without regard to subsection (2) of such Section) are met
     with respect to a contributing  sponsor,  as defined in Section 4001(a)(13)
     of ERISA, of a Plan, and an event  described in paragraph (9), (10),  (11),
     (12) or (13) of Section  4043(c) of ERISA is  reasonably  expected to occur
     with respect to such Plan within the following 30 days; (b) the application
     for a minimum  funding  waiver with respect to a Plan; (c) the provision by
     the administrator of any Plan of a notice of intent to terminate such Plan,
     pursuant to Section  4041(a)(2)  of ERISA  (including  any such notice with
     respect to a plan amendment  referred to in Section 4041(e) of ERISA);  (d)
     the  cessation of  operations  at a facility of any Loan Party or any ERISA
     Affiliate in the  circumstances  described in Section 4062(e) of ERISA; (e)
     the  withdrawal  by any Loan Party or any ERISA  Affiliate  from a Multiple
     Employer Plan during a plan year for which it was a  substantial  employer,
     as  defined  in  Section  4001(a)(2)  of  ERISA;  (f)  the  conditions  for
     imposition of a lien under Section 302(f) of ERISA shall have been met with
     respect to any Plan;  (g) the adoption of an amendment to a Plan  requiring
     the provision of security to such Plan pursuant to Section 307 of ERISA; or
     (h) the institution by the PBGC of proceedings to terminate a Plan pursuant
     to  Section  4042 of ERISA,  or the  occurrence  of any event or  condition
     described  in  Section  4042 of  ERISA  that  constitutes  grounds  for the
     termination of, or the appointment of a trustee to administer, such Plan.



          "Escrow   Agreement"  has  the  meaning   specified  in  the  Purchase
     Agreement.

          "Eurocurrency  Liabilities" has the meaning  specified in Regulation D
     of the Board of Governors of the Federal Reserve System,  as in effect from
     time to time.

          "Eurodollar  Lending Office" means,  with respect to any Lender Party,
     the  office of such  Lender  Party  specified  as its  "Eurodollar  Lending
     Office"  opposite  its name on Schedule I hereto or in the  Assignment  and
     Acceptance  pursuant  to which it  became a Lender  Party  (or,  if no such
     office is specified,  its Domestic Lending Office), or such other office of
     such Lender Party as such Lender Party may from time to time specify to the
     Borrower and the Administrative Agent.

          "Eurodollar  Rate" means,  for any Interest  Period for all Eurodollar
     Rate Advances  comprising part of the same Borrowing,  an interest rate per
     annum equal to the rate per annum  obtained  by  dividing  (a) the rate per
     annum at which  deposits  in U.S.  dollars  are offered by Fleet in London,
     England to prime banks in the London interbank market at 11:00 A.M. (London
     time) two Business Days before the first day of such Interest  Period in an
     amount  substantially  equal to Fleet's  Eurodollar Rate Advance comprising
     part of such Borrowing to be outstanding  during such Interest  Period (or,
     if Fleet shall not have such a Eurodollar Rate Advance, $1,000,000) and for
     a period equal to such Interest  Period by (b) a  percentage  equal to 100%
     minus the Eurodollar Rate Reserve Percentage for such Interest Period.

          "Eurodollar  Rate Advance"  means,  an Advance that bears  interest as
     provided in Section 2.07(a)(ii).

          "Eurodollar  Rate Reserve  Percentage" for any Interest Period for all
     Eurodollar  Rate Advances  comprising  part of the same Borrowing means the
     reserve  percentage  applicable  two Business  Days before the first day of
     such  Interest  Period  under  regulations  issued from time to time by the
     Board of Governors of the Federal  Reserve  System (or any  successor)  for
     determining the maximum reserve requirement (including, without limitation,
     any emergency,  supplemental or other marginal  reserve  requirement) for a
     member bank of the Federal  Reserve System in New York City with respect to
     liabilities or assets consisting of or including  Eurocurrency  Liabilities
     (or with  respect  to any  other  category  of  liabilities  that  includes
     deposits  by  reference  to which  the  interest  rate on  Eurodollar  Rate
     Advances  is  determined)  having  a term  equal to such  Interest  Period.

          "Events of Default" has the meaning specified in Section 6.01.

          "Excess  Cash Flow"  means for any period the sum of (i) EBITDA of PSC
     and its  Subsidiaries for such period plus (ii) the aggregate amount of all
     non-cash  charges  deducted in arriving at EBITDA plus (iii) if there was a
     net  increase  in   Consolidated   Current   Liabilities  of  PSC  and  its
     Subsidiaries  during  such  period,  the amount of such net  increase  plus
     (iv) if there was a net decrease in Consolidated  Current Assets (excluding
     cash and Cash  Equivalents) of PSC and its Subsidiaries  during such period



     the amount of such net decrease less (v) the aggregate  amount of mandatory
     prepayments or repayments of principal made by PSC and its  Subsidiaries on
     any Funded  Debt of PSC and its  Subsidiaries  during such period less (vi)
     Capital  Expenditures of PSC and its Subsidiaries  less (vii) the aggregate
     amount of all federal,  state,  local and foreign taxes paid by PSC and its
     Subsidiaries  during  such  period  less  (viii)  the  aggregate  amount of
     interest  paid on any Funded Debt of PSC and its  Subsidiaries  during such
     periods less (ix) the aggregate  amount of all non-cash credits included in
     arriving  at  such  EBITDA  less  (x)  if  there  was  a  net  decrease  in
     Consolidated  Current  Liabilities of PSC and its Subsidiaries  during such
     period,  the  amount  of such net  decrease  less  (xi) if  there was a net
     increase  in   Consolidated   Current  Assets   (excluding  cash  and  Cash
     Equivalents) of PSC and its  Subsidiaries  during such period the amount of
     such increase.

          "Existing  Debt" means Debt of TxCom,  Scanning  and its  Subsidiaries
     outstanding immediately before giving effect to the Acquisition.

          "Extraordinary  Receipt"  means any cash received by or paid to or for
     the  account  of any  Person  not  in  the  ordinary  course  of  business,
     including,  without  limitation,  tax  refunds,  pension  plan  reversions,
     proceeds  of  insurance  (other  than  proceeds  of  business  interruption
     insurance  to the extent such  proceeds  constitute  compensation  for lost
     earnings), condemnation awards (and payments in lieu thereof) and indemnity
     payments;  provided,  however,  that an  Extraordinary  Receipt  shall  not
     include cash receipts  received  from  proceeds of insurance,  condemnation
     awards (or payments in lieu  thereof) or  indemnity  payments to the extent
     that such proceeds,  awards or payments (A) in respect of loss or damage to
     equipment,  fixed  assets or real  property  are  applied (or in respect of
     which  expenditures  were  previously  incurred)  to  replace or repair the
     equipment,  fixed assets or real property in respect of which such proceeds
     were received in accordance with the terms of the Loan  Documents,  so long
     as such  application  is made within 6 months after the  occurrence of such
     damage or loss or (B) are  received  by any  Person in respect of any third
     party claim  against such Person and applied to pay (or to  reimburse  such
     Person for its prior  payment of) such claim and the costs and  expenses of
     such Person with respect thereto.

          "Facility" means the Term A Facility, the Term B Facility, the Working
     Capital Facility, the Swing Line Facility or the Letter of Credit Facility.

          "Federal  Funds Rate" means,  for any period,  a fluctuating  interest
     rate per  annum  equal for each day  during  such  period  to the  weighted
     average of the rates on overnight  Federal funds  transactions with members
     of the  Federal  Reserve  System  arranged  by Federal  funds  brokers,  as
     published for such day (or, if such day is not a Business Day, for the next
     preceding  Business  Day) by the Federal  Reserve Bank of New York,  or, if
     such  rate is not so  published  for any day that is a  Business  Day,  the
     average of the  quotations for such day for such  transactions  received by
     the  Administrative  Agent from three  Federal  funds brokers of recognized
     standing selected by it.

          "Fiscal  Year"  means  a  fiscal  year  of PSC  and  its  Consolidated
     Subsidiaries ending on December 31 in any calendar year.



          "Foreign Sales  Agreements" has the meaning  specified in the Purchase
     Agreement.

          "Foreign Subsidiary" means each of the following:  (A) each Subsidiary
     of PSC  identified  as such on  Schedule  II  annexed  hereto  and (B) each
     Subsidiary of PSC which is organized under the laws of a jurisdiction other
     than the United States of America or any state thereof.

          "Funded Debt" of any Person means Debt in respect of the Advances,  in
     the case of the  Borrower,  and all other Debt of such  Person  that by its
     terms matures more than one year after the date of determination or matures
     within  one year from  such date but is  renewable  or  extendible,  at the
     option of such  Person,  to a date more  than one year  after  such date or
     arises under a revolving  credit or similar  agreement  that  obligates the
     lender or  lenders to extend  credit  during a period of more than one year
     after such date.

          "GAAP" has the meaning specified in Section 1.03.

          "Guaranteed Obligations" has the meaning specified in Section 9.01.

          "Guarantors" means PSC and the Subsidiary Guarantors.

          "Hazardous  Materials"  means  (a) petroleum  or  petroleum  products,
     by-products    or    breakdown     products,     radioactive     materials,
     asbestos-containing materials,  polychlorinated biphenyls and radon gas and
     (b) any other chemicals, materials or substances designated,  classified or
     regulated as hazardous or toxic or as a pollutant or contaminant  under any
     Environmental Law.

          "Hedge Agreements" means interest rate swap, cap or collar agreements,
     interest  rate  future  or  option  contracts,  currency  swap  agreements,
     currency future or option contracts and other similar agreements.

          "Hedge  Bank" means any Lender  Party in its  capacity as a party to a
     Bank Hedge Agreement.

          "Indemnified Party" has the meaning specified in Section 8.04(b).

          "Information  Memorandum" means the information memorandum dated June,
     1996 used by the  Co-Arrangers  in connection  with the  syndication of the
     Commitments.

          "Initial  Extension  of  Credit"  means  the  earlier  to occur of the
     initial Borrowing and the initial issuance of a Letter of Credit hereunder.

          "Initial Issuing Bank" means Fleet.

          "Initial  Lenders" has the meaning specified in the recital of parties
     to this Agreement.


          "Insufficiency"  means,  with respect to any Plan, the amount, if any,
     of its unfunded benefit liabilities,  as defined in  Section 4001(a)(18) of
     ERISA.

          "Intellectual  Property Security  Agreement" has the meaning specified
     in Section 3.01(l)(x).

          "Interest  Expense" means,  with respect to any Person for any period,
     interest expense on all Debt of such Person for such period net of interest
     income  for  such  period,  whether  paid  or  accrued,   determined  on  a
     Consolidated  basis for such Person and its  Subsidiaries and in accordance
     with  GAAP,  and  including,  without  limitation,  (a) in the case of PSC,
     interest  expense in  respect  of Debt  resulting  from  Advances,  (b) the
     interest  component  of  all  obligations  under  Capitalized  Leases,  (c)
     commissions,  discounts  and other fees and charges  payable in  connection
     with letters of credit (including,  without limitation, Letters of Credit),
     (d) the net payment,  if any,  payable in connection with Hedge  Agreements
     less the net credit,  if any,  received in connection with Hedge Agreements
     and (e) in the case of the Borrower,  all fees paid by such Person pursuant
     to Section 2.08(a).

          "Interest  Period" means, for each Eurodollar Rate Advance  comprising
     part of the  same  Borrowing,  the  period  commencing  on the date of such
     Eurodollar  Rate  Advance or the date of the  Conversion  of any Prime Rate
     Advance into such  Eurodollar  Rate Advance,  and ending on the last day of
     the period selected by the Borrower  pursuant to the provisions  below and,
     thereafter,  each  subsequent  period  commencing  on the  last  day of the
     immediately  preceding  Interest  Period  and ending on the last day of the
     period  selected by the  Borrower  pursuant to the  provisions  below.  The
     duration  of each such  Interest  Period  shall be one,  two,  three or six
     months,  as the Borrower  may, upon notice  received by the  Administrative
     Agent not later  than  11:00 A.M.  (Rochester,  New York time) on the third
     Business  Day  prior to the  first  day of such  Interest  Period,  select;
     provided, however, that:

               (a) the Borrower may not select any Interest  Period with respect
          to any  Eurodollar  Rate Advance  under a Facility that ends after any
          principal repayment  installment date for such Facility unless,  after
          giving effect to such  selection,  the aggregate  principal  amount of
          Prime Rate Advances and of Eurodollar  Rate Advances  having  Interest
          Periods that end on or prior to such principal  repayment  installment
          date  for such  Facility  shall  be at  least  equal to the  aggregate
          principal amount of Advances under such Facility due and payable on or
          prior to such date;

               (b) Interest  Periods  commencing on the same date for Eurodollar
          Rate Advances  comprising  part of the same Borrowing  shall be of the
          same duration;

               (c) whenever the last day of any Interest  Period would otherwise
          occur  on a day  other  than a  Business  Day,  the  last  day of such
          Interest  Period  shall be  extended  to occur on the next  succeeding
          Business Day, provided,  however,  that, if such extension would cause
          the last day of such  Interest  Period to occur in the next  following
          calendar  month,  the last day of such Interest  Period shall occur on
          the next preceding Business Day; and


               (d) whenever the first day of any Interest Period occurs on a day
          of an  initial  calendar  month  for  which  there  is no  numerically
          corresponding  day in the calendar  month that  succeeds  such initial
          calendar  month by the number of months  equal to the number of months
          in such Interest  Period,  such Interest  Period shall end on the last
          Business Day of such succeeding calendar month.

          "Internal  Revenue  Code" means the Internal  Revenue Code of 1986, as
     amended  from time to time,  and the  regulations  promulgated  and rulings
     issued thereunder.

          "Investment"  in any Person  means any loan or advance to such Person,
     any purchase or other  acquisition of any capital stock or other  ownership
     or  profit  interest,  warrants,  rights,  options,  obligations  or  other
     securities of such Person,  any capital  contribution to such Person or any
     other  investment  in  such  Person,  including,  without  limitation,  any
     arrangement  pursuant  to  which  the  investor  incurs  Debt of the  types
     referred to in clause (i) or (j) of the  definition of "Debt" in respect of
     such Person.

          "IRB Documents" means (i) the Installment  Sale Agreement  between the
     Oregon Economic Development Commission,  acting for itself and on behalf of
     the  Department  of  Economic  Development,  and as  designee  of the State
     Treasurer (collectively, the "OEDC") (as such interest of OEDC was assigned
     to  the  Bond  Trustee  by   assignment   dated   January  1,  1981),   and
     Spectra-Physics,  Inc. dated January 1, 1981, (ii) the Assignment of Rights
     Under   Installment   Sale   Agreement   dated   December   21,   1990   by
     Spectra-Physics,  Inc. to Scanning,  (iii) all financing  statements  filed
     naming the OEDC as secured party and  Spectra-Physics,  Inc. as debtor,  or
     naming the OEDC as debtor and Bank of America Oregon as secured party, (iv)
     the   Guaranty   Agreement   dated  July  1,  1979  between  the  OEDC  and
     Spectra-Physics,  Inc.  and (v) the  Indenture of Trust dated as of July 1,
     1979 between the OEDC and the Bond Trustee.

          "IRB Notices" has the meaning specified in Section 3.01(l)(xiv).

          "IRB Property" means the real estate in Eugene,  Oregon,  that is more
     particularly described on Schedule 4.01(ff).

          "Issuing  Bank"  means  the  Initial  Issuing  Bank and each  Eligible
     Assignee  to which  the  Letter  of Credit  Commitment  hereunder  has been
     assigned pursuant to Section 8.07.

          "L/C  Cash  Collateral  Account"  has  the  meaning  specified  in the
     Security Agreement.

          "L/C  Related   Documents"  has  the  meaning   specified  in  Section
     2.04(e)(ii).

          "Lender  Party"  means any Lender,  the Issuing Bank or the Swing Line
     Bank.

          "Lenders"  means the Initial Lenders and each Person that shall become
     a Lender hereunder pursuant to Section 8.07.



          "Letter of Credit" has the meaning specified in Section 2.01(e).

          "Letter of Credit  Advance"  means an advance made by the Issuing Bank
     or any Working Capital Lender pursuant to Section 2.03(c).

          "Letter of Credit  Agreement"  has the  meaning  specified  in Section
     2.03(a)(E).

          "Letter of Credit Commitment" means, with respect to the Issuing Bank,
     the amount set forth  opposite the Issuing Bank's name on Schedule I hereto
     under the caption "Letter of Credit Commitment" or, if the Issuing Bank has
     entered into one or more  Assignments  and  Acceptances,  set forth for the
     Issuing  Bank  in  the  Register  maintained  by the  Administrative  Agent
     pursuant  to  Section  8.07(d)  as the  Issuing  Bank's  "Letter  of Credit
     Commitment,"  as such  amount  may be  reduced  at or  prior  to such  time
     pursuant to Section 2.05.

          "Letter of Credit Facility" means, at any time, an amount equal to the
     amount of the Issuing  Bank's Letter of Credit  Commitment at such time, as
     such  amount may be reduced  at or prior to such time  pursuant  to Section
     2.05.

          "Lien"  means  any  lien,   security   interest  or  other  charge  or
     encumbrance  of any kind,  or any other type of  preferential  arrangement,
     including,  without  limitation,  the lien or retained  security title of a
     conditional  vendor and any easement,  right of way or other encumbrance on
     title to real property.

          "Loan  Documents"  means (a) for  purposes of this  Agreement  and the
     Notes and any amendment or modification hereof or thereof and for all other
     purposes  other  than  for  purposes  of the  Subsidiary  Guaranty  and the
     Collateral  Documents,  (i) this  Agreement,  (ii)  the  Notes,  (iii)  the
     Subsidiary  Guaranty,  (iv) the  Collateral  Documents,  (v) each Letter of
     Credit Agreement and (vi) the Assumption  Agreement and (b) for purposes of
     the Subsidiary Guaranty and the Collateral  Documents,  (i) this Agreement,
     (ii)  the  Notes,  (iii)  the  Subsidiary  Guaranty,  (iv)  the  Collateral
     Documents,  (v) each  Letter  of  Credit  Agreement,  (vi)  the  Assumption
     Agreement and (vii) each Bank Hedge  Agreement,  in each case as amended or
     otherwise modified from time to time.

          "Loan Parties" means the Borrower and the Guarantors.

          "M&T" means Manufacturers and Traders Trust Company.

          "Margin Stock" has the meaning specified in Regulation U.

          "Material Adverse Change" means any material adverse change in (a) the
     business,  condition  (financial or  otherwise),  operations,  performance,
     properties or prospects of any Loan Party and its Subsidiaries  (taken as a
     whole),  (b) the ability of the  Borrower or any  Guarantor  to perform its
     obligations under the Loan Documents or (c) any aspect of the Transaction.



          "Material  Adverse  Effect"  has  the  meaning  specified  in  Section
     3.01(g).

          "Material  Contract" means, with respect to any Person,  each contract
     listed on Schedule  4.01(hh),  each contract  which is a  replacement  or a
     substitute  for any  contract  listed on Schedule  4.01(hh)  and each other
     contract to which such Person is a party which is material to the business,
     condition (financial or otherwise), operations,  performance, properties or
     prospects of such Person.

          "Merger" has the meaning specified in the Preliminary Statements.

          "Merger  Agreement"  means the Plan and Agreement of Merger dated July
     __, 1996  adopted by the Board of  Directors  of Scanning  and the Board of
     Directors of PSC Acquisition.

          "Mortgage"  means the New York Mortgage,  the Oregon Deed of Trust and
     each  other  mortgage  delivered  pursuant  to  Section  5.01(o) or Section
     5.01(s),  in each case as amended,  supplemented or otherwise modified from
     time to time.

          "Mortgage Policy" has the meaning specified in Section 3.01(l)(xi)(B).

          "Multiemployer Plan" means a multiemployer plan, as defined in Section
     4001(a)(3)  of ERISA,  to which any Loan  Party or any ERISA  Affiliate  is
     making or accruing an obligation to make  contributions,  or has within any
     of the  preceding  five plan years made or  accrued an  obligation  to make
     contributions.

          "Multiple  Employer Plan" means a single  employer plan, as defined in
     Section  4001(a)(15) of ERISA,  that (a) is maintained for employees of any
     Loan Party or any ERISA  Affiliate  and at least one Person  other than the
     Loan  Parties  and the ERISA  Affiliates  or (b) was so  maintained  and in
     respect of which any Loan Party or any ERISA Affiliate could have liability
     under Section 4064 or 4069 of ERISA in the event such plan has been or were
     to be terminated.

          "Net Cash Proceeds" means, with respect to any sale,  lease,  transfer
     or other  disposition  of any asset or the sale or  issuance of any Debt or
     capital  stock  or other  ownership  or  profit  interest,  any  securities
     convertible  into or  exchangeable  for capital stock or other ownership or
     profit  interest or any warrants,  rights,  options or other  securities to
     acquire  capital stock or other  ownership or profit interest by any Person
     (other than the sale of shares of common  stock of PSC to  employees of PSC
     pursuant to the  exercise of stock  options  received by such  employees in
     connection  with the PSC Stock  Option  Plans and the sale or  issuance  of
     shares of  Common  Stock of PSC upon the  exercise  by the  holders  of the
     Subordinated Notes of the Warrants),  or any Extraordinary Receipt received
     by or paid to or for the account of any  Person,  the  aggregate  amount of
     cash  received  from time to time  (whether  as  initial  consideration  or
     through payment or disposition of deferred  consideration)  by or on behalf
     of  such  Person  in  connection  with  such  transaction  after  deducting
     therefrom only (without duplication) (a) reasonable and customary brokerage
     commissions, underwriting



     fees and  discounts,  legal fees,  finder's fees and other similar fees and
     commissions  and (b) the amount of taxes payable in connection with or as a
     result of such transaction and (c) the amount of any Debt secured by a Lien
     on such asset  that,  by the terms of such  transaction,  is required to be
     repaid upon such disposition,  in each case to the extent,  but only to the
     extent,  that the amounts so  deducted  are, at the time of receipt of such
     cash,  actually paid to a Person that is not an Affiliate of such Person or
     any  Loan  Party  or any  Affiliate  of any  Loan  Party  and are  properly
     attributable  to such  transaction  or to the  asset  that  is the  subject
     thereof.

          "New York Mortgage" has the meaning specified in Section 3.01(l)(xi).

          "New York Tax  Agreement"  means the Payment in Lieu of Tax  Agreement
     dated November 1, 1993 between COMIDA and PSC.

          "Nonratable Assignment" means an assignment by a Lender Party pursuant
     to Section  8.07(a) of a portion of its rights and  obligations  under this
     Agreement,  other  than an  assignment  of a  uniform,  and not a  varying,
     percentage of all of the rights and  obligations of such Lender Party under
     and in respect of all of the  Facilities  (other  than the Letter of Credit
     Facility and the Swing Line Facility).

          "Note" means a Term A Note, a Term B Note or a Working Capital Note.

          "Notice of Borrowing" has the meaning specified in Section 2.02(a).

          "Notice of Issuance" has the meaning specified in Section 2.03(a).

          "Notice of Renewal" has the meaning specified in Section 2.01(e).

          "Notice of Swing Line Borrowing" has the meaning  specified in Section
     2.02(b).

          "Notice of Termination" has the meaning specified in Section 2.01(e).

          "NPL" means the National Priorities List under CERCLA.

          "Obligation"   means,  with  respect  to  any  Person,   any  payment,
     performance  or other  obligation  of such  Person of any kind,  including,
     without limitation,  any liability of such Person on any claim,  whether or
     not the right of any  creditor  to  payment  in  respect  of such  claim is
     reduced to judgment, liquidated,  unliquidated, fixed, contingent, matured,
     disputed,  undisputed,  legal, equitable, secured or unsecured, and whether
     or not such  claim is  discharged,  stayed  or  otherwise  affected  by any
     proceeding referred to in Section 6.01(f).  Without limiting the generality
     of the  foregoing,  the  Obligations  of the Loan  Parties  under  the Loan
     Documents include (a) the obligation to pay principal,  interest, Letter of
     Credit  commissions,   charges,   expenses,   fees,   attorneys'  fees  and
     disbursements,  indemnities  and other  amounts  payable  by any Loan Party
     under  any  Loan  Document  and (b) the  obligation  of any  Loan  Party to
     reimburse  any amount in respect  of any of the  foregoing  that any Lender
     Party,  in its sole  discretion,  may elect to pay or  advance on behalf of
     such Loan Party.



          "OECD"   means  the   Organization   for  Economic   Cooperation   and
     Development.

          "Open Year" has the meaning specified in Section 4.01(w).

          "Oregon   Deed  of  Trust"  has  the  meaning   specified  in  Section
     3.01(l)(xi).

          "Other Taxes" has the meaning specified in Section 2.12(b).

          "PBGC"  means  the  Pension  Benefit  Guaranty   Corporation  (or  any
     successor).

          "Permitted Encumbrances" has the meaning specified in the Mortgages.

          "Permitted  Liens"  means  such  of  the  following  as  to  which  no
     enforcement,  collection,  execution,  levy or foreclosure proceeding shall
     have been  commenced:  (a) Liens for taxes,  assessments  and  governmental
     charges or levies not yet due and payable;  (b) Liens  imposed by law, such
     as materialmen's,  mechanics',  carriers',  workmen's and repairmen's Liens
     and other similar Liens arising in the ordinary course of business securing
     obligations  that  are not  overdue  for a  period  of more  than 30  days;
     (c) pledges or deposits to secure  obligations under workers'  compensation
     laws or similar  legislation or to secure public or statutory  obligations;
     and (d) Permitted Encumbrances.

          "Person" means an individual,  partnership,  corporation  (including a
     business trust),  limited liability  company,  joint stock company,  trust,
     unincorporated association,  joint venture or other entity, or a government
     or any political subdivision or agency thereof.

          "Plan" means a Single Employer Plan or a Multiple Employer Plan.

          "Pre-Commitment  Information"  has the  meaning  specified  in Section
     3.01(j).

          "Preferred  Stock"  means,  with respect to any  corporation,  capital
     stock  issued by such  corporation  that is  entitled  to a  preference  or
     priority over any other capital stock issued by such  corporation  upon any
     distribution  of such  corporation's  assets,  whether by  dividend or upon
     liquidation.

          "Prime  Rate" means a  fluctuating  interest  rate per annum in effect
     from time to time,  which rate per annum shall at all times be equal to the
     higher of:

               (a)  the  rate  of  interest   announced  publicly  by  Fleet  in
          Rochester, New York from time to time, as Fleet's prime rate; or

               (b) 1/2 of one percent per annum above the Federal Funds Rate.

          "Prime Rate Advance"  means an Advance that bears interest as provided
     in Section 2.07(a)(i).



          "Pro Forma EBITDA" means for each fiscal  quarter  ending on September
     30, 1995,  December  31, 1995,  March 31, 1996 and June 30, 1996 the amount
     listed on Schedule III for such fiscal quarter.

          "Pro Rata  Share" of any amount  means,  with  respect to any  Working
     Capital Lender at any time, the product of such amount times a fraction the
     numerator  of  which  is  the  amount  of  such  Lender's  Working  Capital
     Commitment at such time and the denominator of which is the Working Capital
     Facility at such time.

          "PSC" has the  meaning  specified  in the  recital  of parties to this
     Agreement.

          "PSC Guaranty" has the meaning specified in Section 9.01.

          "PSC Stock  Option  Plans" means the 1987 Stock Option Plan of PSC and
     the 1994 Stock Option Plan of PSC.

          "Purchase  Agreement"  has the meaning  specified  in the  Preliminary
     Statements.

          "Receivables" means all Receivables referred to in Section 1(c) of the
     Security Agreement.

          "Redeemable"  means,  with  respect  to any  capital  stock  or  other
     ownership or profit interest,  Debt or other right or Obligation,  any such
     right or Obligation that (a) the issuer has undertaken to redeem at a fixed
     or  determinable  date or dates,  whether by operation of a sinking fund or
     otherwise,  or upon the  occurrence  of a condition  not solely  within the
     control of the issuer or (b) is redeemable at the option of the holder.

          "Reduction Amount" has the meaning specified in Section 2.06(b)(vi).

          "Register" has the meaning specified in Section 8.07(d).

          "Registration  Rights  Agreement"  has the  meaning  specified  in the
     Purchase Agreement.

          "Regulation  U" means  Regulation U  of the Board of  Governors of the
     Federal Reserve System, as in effect from time to time.

          "Related   Documents"  means  the  Purchase   Agreement,   the  Merger
     Agreement,  the Subordinated  Debt Documents,  the Seller Note, the Foreign
     Sales  Agreements,   the  Escrow  Agreement,   the  TxCom  Agreement,   the
     Registration  Rights Agreement,  the Transition  Services Agreement and the
     New York Tax Agreement.

          "Required  Lenders" means at any time Lenders owed or holding at least
     66-2/3% of the sum of (a) the  aggregate  principal  amount of the Advances
     outstanding  at such  time and (b) the  aggregate  Available  Amount of all
     Letters of Credit outstanding at such time, or, if no


     such  principal  amount and no Letters  of Credit are  outstanding  at such
     time,  Lenders  holding  at least  66-2/3% of the  aggregate  of the Term A
     Commitments,  Term B Commitments  and Working Capital  Commitments  owed or
     holding at least 66-2/3% of the sum of (w) the aggregate  principal  amount
     of the  Advances  outstanding  at such time,  (x) the  aggregate  Available
     Amount of all Letters of Credit outstanding at such time, (y) the aggregate
     unused  Commitments under the Term A and Term B Facilities at such time and
     (z)  the  aggregate  Unused  Working  Capital  Commitments  at  such  time;
     provided,  however, that if any Lender shall be a Defaulting Lender at such
     time, there shall be excluded from the determination of Required Lenders at
     such time (A) the aggregate  principal amount of the Advances owing to such
     Lender (in its capacity as a Lender) and outstanding at such time, (B) such
     Lender's Pro Rata Share of the aggregate Available Amount of all Letters of
     Credit  issued  by  such  Lender  and  outstanding  at such  time,  (C) the
     aggregate  unused Term A Commitments  and Term B Commitments of such Lender
     at such time and (D) the Unused Working  Capital  Commitment of such Lender
     at such time.  For purposes of this  definition,  the  aggregate  principal
     amount of Swing Line Advances owing to the Swing Line Bank and of Letter of
     Credit Advances owing to the Issuing Bank and the Available  Amount of each
     Letter of Credit  shall be  considered  to be owed to the  Working  Capital
     Lenders  ratably  in  accordance  with  their  respective  Working  Capital
     Commitments.

          "Responsible  Officer"  means any  officer of any Loan Party or any of
     its Subsidiaries.

          "Secured  Obligations"  has  the  meaning  specified  in the  Security
     Agreement.

          "Secured Parties" means the Administrative  Agent, the Lender Parties,
     and the Hedge Banks and the other  Persons the  Obligations  owing to which
     are or are purported to be secured by the Collateral under the terms of the
     Collateral Documents.

          "Securities   Purchase  Agreements"  means  each  Securities  Purchase
     Agreement dated July __, 1996 between the Surviving Corporation,  PSC and a
     purchaser of the  Subordinated  Notes,  pursuant to which the  Subordinated
     Notes are issued.

          "Security Agreement" has the meaning specified in Section 3.01(l)(ix).

          "Seller  Note" means the  promissory  note dated July __, 1996 made by
     PSC Acquisition to the Company.

          "Senior Debt" means Debt incurred by the Borrower pursuant to the Loan
     Documents and the Hedge Agreements.

          "Single  Employer  Plan" means a single  employer  plan, as defined in
     Section  4001(a)(15) of ERISA,  that (a) is maintained for employees of any
     Loan Party or any ERISA Affiliate and no Person other than the Loan Parties
     and the ERISA  Affiliates or (b) was so maintained  and in respect of which
     any Loan Party or any ERISA  Affiliate  could have liability  under Section
     4069 of ERISA in the event such plan has been or were to be terminated.




          "Solvent"  and  "Solvency"  mean,  with  respect  to any  Person  on a
     particular  date,  that on such date (a) the fair value of the  property of
     such Person is greater  than the total  amount of  liabilities,  including,
     without limitation, contingent liabilities, of such Person, (b) the present
     fair salable value of the assets of such Person is not less than the amount
     that will be required to pay the  probable  liability of such Person on its
     debts as they become absolute and matured,  (c) such Person does not intend
     to, and does not believe that it will,  incur debts or  liabilities  beyond
     such Person's  ability to pay such debts and liabilities as they mature and
     (d) such  Person is not engaged in business  or a  transaction,  and is not
     about to engage in  business  or a  transaction,  for which  such  Person's
     property would  constitute an  unreasonably  small  capital.  The amount of
     contingent liabilities at any time shall be computed as the amount that, in
     the  light  of all the  facts  and  circumstances  existing  at such  time,
     represents  the amount that can  reasonably be expected to become an actual
     or matured liability.

          "SP Holdings" has the meaning specified in the Preliminary Statements.

          "Standby Letter of Credit" means any Letter of Credit issued under the
     Letter of Credit Facility, other than a Trade Letter of Credit.

          "Subordinated Debt" means the Subordinated Notes and any other Debt of
     the Borrower that is  subordinated to the Obligations of the Borrower under
     the Loan  Documents on, and that otherwise  contains,  terms and conditions
     reasonably satisfactory to the Required Lenders.

          "Subordinated Debt Documents" means the Securities Purchase Agreements
     and all other  agreements,  indentures  and  instruments  pursuant to which
     Subordinated Debt is issued.

          "Subordinated  Notes" means the subordinated  notes of the Borrower in
     an  aggregate  principal  amount  of  $30,000,000  issued  pursuant  to the
     Securities Purchase Agreements.

          "Subsidiary" of any Person means any corporation,  partnership,  joint
     venture,  limited liability company, trust or estate of which (or in which)
     more  than 50% of (a) the  issued  and  outstanding  capital  stock  having
     ordinary voting power to elect a majority of the Board of Directors of such
     corporation (irrespective of whether at the time capital stock of any other
     class or classes of such corporation  shall or might have voting power upon
     the  occurrence  of any  contingency),  (b) the  interest in the capital or
     profits of such partnership,  joint venture or limited liability company or
     (c) the beneficial interest in such trust or estate is at the time directly
     or indirectly owned or controlled by such Person, by such Person and one or
     more of its other  Subsidiaries  or by one or more of such  Person's  other
     Subsidiaries.

          "Subsidiary  Guarantors"  means each direct or indirect  Subsidiary of
     PSC (other than any Foreign Subsidiary).

          "Subsidiary Guaranty" has the meaning specified Section 3.01(l)(xii).

          "Surviving  Corporation" has the meaning  specified in the Preliminary
     Statements.


          "Surviving Debt" has the meaning specified in Section 3.01(e).

          "Swing Line Advance"  means an advance made by (a) the Swing Line Bank
     pursuant to Section  2.01(d) or (b) any Working  Capital Lender pursuant to
     Section 2.02(b).

          "Swing Line Bank" means Fleet.

          "Swing Line  Borrowing"  means a borrowing  consisting of a Swing Line
     Advance made by the Swing Line Bank.

          "Swing Line Facility" has the meaning specified in Section 2.01(d).

          "Tax Certificate" has the meaning specified in Section 5.03(p).

          "Taxes" has the meaning specified in Section 2.12(a).

          "Term A Advance" has the meaning specified in Section 2.01(a).

          "Term A Borrowing" means a borrowing consisting of simultaneous Term A
     Advances of the same Type made by the Term A Lenders.

          "Term A  Commitment"  means,  with respect to any Term A Lender at any
     time, the amount set forth opposite such Lender's name on Schedule I hereto
     under the caption "Term A  Commitment"  or, if such Lender has entered into
     one or more Assignments and  Acceptances,  set forth for such Lender in the
     Register maintained by the Administrative Agent pursuant to Section 8.07(d)
     as such Lender's "Term A  Commitment,"  as such amount may be reduced at or
     prior to such time pursuant to Section 2.05.

          "Term A Facility"  means,  at any time,  the  aggregate  amount of the
     Term A Lenders' Term Commitments at such time.

          "Term A Lender" means any Lender that has a Term A Commitment.

          "Term A Note" means a promissory  note of the Borrower  payable to the
     order of any  Term A  Lender,  in  substantially  the  form of  Exhibit A-1
     hereto,  evidencing  the  indebtedness  of  the  Borrower  to  such  Lender
     resulting from the Term A Advance made by such Lender.

          "Term B Advance" has the meaning specified in Section 2.01(b).

          "Term B Borrowing" means a borrowing consisting of simultaneous Term B
     Advances of the same Type made by the Term B Lenders.

          "Term B  Commitment"  means,  with respect to any Term B Lender at any
     time, the amount set forth opposite such Lender's name on Schedule I hereto
     under the caption "Term B  Commitment"  or, if such Lender has entered into
     one or more Assignments and Acceptances


     set forth for such Lender in the Register  maintained by the Administrative
     Agent pursuant to Section  8.07(d) as such Lender's "Term B Commitment," as
     such  amount may be reduced  at or prior to such time  pursuant  to Section
     2.04.

          "Term B Facility" means, at any time, the aggregate amount of the Term
     B Lenders' Term B Commitments at such time.

          "Term B Lender" means any Lender that has a Term B Commitment.

          "Term B Note" means a promissory  note of the Borrower  payable to the
     order of any Term B  Lender,  in  substantially  the  form of  Exhibit  A-2
     hereto,  evidencing  the  indebtedness  of  the  Borrower  to  such  Lender
     resulting from the Term B Advance made by such Lender.

          "Term Facilities" means the Term A Facility and the Term B Facility.

          "Termination Date" means the earlier of December 31, 2002 and the date
     of termination in whole of the Term A Commitments,  the Term B Commitments,
     the  Letter of  Credit  Commitments  and the  Working  Capital  Commitments
     pursuant to Section 2.05 or 6.01.

          "Total  Debt Ratio"  means,  at any date,  the ratio of the  aggregate
     amount  of Debt of PSC and its  Subsidiaries  on the  last  day of the most
     recently  completed  fiscal quarter of PSC to  Consolidated  EBITDA for the
     most recently  completed four fiscal  quarters of PSC;  provided,  however,
     that if such four fiscal quarter  period  includes any or all of the fiscal
     quarters ending on September 30, 1995, December 31, 1995, March 31, 1996 or
     June 30, 1996,  Consolidated  EBITDA shall be  calculated  by using the Pro
     Forma  EBITDA  for each such  fiscal  quarter in such four  fiscal  quarter
     period;  provided,  further,  that for purposes  solely of calculating  the
     aggregate amount of Debt outstanding, the Working Capital Advances shall be
     deemed to be  outstanding  in an  aggregate  principal  amount equal to the
     average  principal  amount  outstanding  over the  previous two full fiscal
     quarters.

          "Trade  Letter of Credit"  means any  Letter of Credit  that is issued
     under the  Letter of Credit  Facility  for the  benefit  of a  supplier  of
     Inventory to the Borrower or any of its  Subsidiaries to effect payment for
     such  Inventory,   the  conditions  to  drawing  under  which  include  the
     presentation  to the Issuing Bank of negotiable  bills of lading,  invoices
     and related documents  sufficient,  in the judgment of the Issuing Bank, to
     create  a  valid  and  perfected  lien  on or  security  interest  in  such
     Inventory,  bills of lading, invoices and related documents in favor of the
     Issuing Bank.

          "Transaction"  means  the  Acquisition,  the  Merger,  the  Securities
     Purchase   Agreements   and  the  Loan   Documents  and  the   transactions
     contemplated thereby.

          "Transition  Services  Agreement"  has the  meaning  specified  in the
     Purchase Agreement.

          "TxCom" means T.X.C.O.M., S.A., a French corporation.




          "TxCom Agreement" has the meaning specified in the Purchase Agreement.

          "Type" refers to the distinction  between Advances bearing interest at
     the Prime Rate and Advances bearing interest at the Eurodollar Rate.

          "Unused Working Capital Commitment" means, with respect to any Working
     Capital Lender at any time, (a) such Lender's Working Capital Commitment at
     such time minus (b) the sum of (i) the  aggregate  principal  amount of all
     Working Capital Advances, Swing Line Advances and Letter of Credit Advances
     made by such Lender (in its capacity as a Lender) and  outstanding  at such
     time, plus (ii) such Lender's Pro Rata Share of (A) the aggregate Available
     Amount of all Letters of Credit outstanding at such time, (B) the aggregate
     principal  amount of all Letter of Credit Advances made by the Issuing Bank
     pursuant  to  Section 2.03(c)  and  outstanding  at such  time  and (C) the
     aggregate  principal  amount of all Swing Line  Advances  made by the Swing
     Line Bank pursuant to Section 2.01(d) and outstanding at such time.

          "Voting  Stock"  means  capital  stock  issued  by a  corporation,  or
     equivalent  interests  in any  other  Person,  the  holders  of  which  are
     ordinarily,  in the  absence  of  contingencies,  entitled  to vote for the
     election of directors  (or persons  performing  similar  functions) of such
     Person, even if the right so to vote has been suspended by the happening of
     such a contingency.

          "Warrants"  means the  warrants to purchase  975,000  shares of common
     stock of PSC issued pursuant to the Securities Purchase Agreements.

          "Welfare  Plan" means a welfare  plan,  as defined in Section  3(1) of
     ERISA,  that is maintained for employees of any Loan Party or in respect of
     which any Loan Party could have liability.

          "Withdrawal   Liability"  has  the  meaning  specified  in  Part I  of
     Subtitle E of Title IV of ERISA.

          "Working   Capital    Advance"   has   the   meaning    specified   in
     Section 2.01(c).

          "Working   Capital   Borrowing"   means  a  borrowing   consisting  of
     simultaneous  Working Capital Advances of the same Type made by the Working
     Capital Lenders.

          "Working  Capital  Commitment"  means,  with  respect  to any  Working
     Capital  Lender at any time,  the amount set forth  opposite  such Lender's
     name on Schedule I hereto under the caption  "Working  Capital  Commitment"
     or,  if  such  Lender  has  entered  into  one  or  more   Assignments  and
     Acceptances,  set forth for such Lender in the Register  maintained  by the
     Administrative  Agent pursuant to Section 8.07(d) as such Lender's "Working
     Capital Commitment," as such amount may be reduced at or prior to such time
     pursuant to Section 2.05.



          "Working Capital Facility" means, at any time, the aggregate amount of
     the Working Capital Lenders' Working Capital Commitments at such time.

          "Working  Capital  Lender" means any Lender that has a Working Capital
     Commitment.

          "Working Capital Note" means a promissory note of the Borrower payable
     to the order of any Working Capital Lender,  in  substantially  the form of
     Exhibit A-3 hereto,  evidencing the aggregate  indebtedness of the Borrower
     to such Lender  resulting  from the Working  Capital  Advances made by such
     Lender.

          "Working Capital  Termination Date" means the earlier of June 30, 2001
     and the date of the  termination  in whole  of the  Term  Commitments,  the
     letter of Credit Commitments and the Working Capital  Commitments  pursuant
     to Section 2.05 or 6.01.

          SECTION 1.02.  Computation  of Time Periods.  In this Agreement in the
     computation of periods of time from a specified  date to a later  specified
     date,  the word "from"  means "from and  including"  and the words "to" and
     "until" each mean "to but excluding."

          SECTION 1.03.  Accounting Terms. All accounting terms not specifically
     defined  herein shall be construed in accordance  with  generally  accepted
     accounting  principles  consistent with those applied in the preparation of
     the financial statements referred to in Section 4.01(f)(ii) ("GAAP").


                                   ARTICLE II

                        AMOUNTS AND TERMS OF THE ADVANCES
                            AND THE LETTERS OF CREDIT

     SECTION  2.01.  The Advances.  (a) The Term A Advances.  Each Term A Lender
severally agrees,  on the terms and conditions  hereinafter set forth, to make a
single  advance (a "Term A Advance")  to the Borrower on any Business Day during
the period from the date  hereof  until July 30, 1996 in an amount not to exceed
such Lender's Term A Commitment at such time. The Term A Borrowing shall consist
of Term A Advances made  simultaneously  by the Term A Lenders ratably according
to their Term A Commitments.  Amounts  borrowed  under this Section  2.01(a) and
repaid or prepaid may not be reborrowed.

     (b) The Term B Advances.  Each Term B Lender severally agrees, on the terms
and  conditions  hereinafter  set  forth,  to make a single  advance  (a "Term B
Advance")  to the  Borrower on any  Business Day during the period from the date
hereof  until July 30,  1996 in an amount  not to exceed  such  Lender's  Term B
Commitment at such time.  The Term B Borrowing  shall consist of Term B Advances
made  simultaneously  by the Term B Lenders  ratably  according  to their Term B
Commitments.  Amounts  borrowed under this Section 2.01(b) and repaid or prepaid
may not be reborrowed.


     (c) The Working Capital  Advances.  Each Working  Capital Lender  severally
agrees,  on the terms and  conditions  hereinafter  set forth,  to make advances
(each a "Working  Capital  Advance")  to the  Borrower  from time to time on any
Business  Day during the period from the date hereof  until the Working  Capital
Termination  Date in an amount for each such Advance not to exceed such Lender's
Unused Working Capital  Commitment at such time. Each Working Capital  Borrowing
shall be in an  aggregate  amount  of  $1,000,000  or an  integral  multiple  of
$100,000 in excess  thereof  (other than a Borrowing the proceeds of which shall
be used  solely to repay or prepay in full  outstanding  Swing Line  Advances or
outstanding  Letter of Credit  Advances)  and shall  consist of Working  Capital
Advances made simultaneously by the Working Capital Lenders ratably according to
their Working  Capital  Commitments.  Within the limits of each Working  Capital
Lender's  Unused  Working  Capital  Commitment in effect from time to time,  the
Borrower  may borrow  under this  Section  2.01(c),  prepay  pursuant to Section
2.06(a) and reborrow under this Section 2.01(c).

     (d) The Swing Line  Advances.  The Borrower may request the Swing Line Bank
to make, and the Swing Line Bank may, if in its sole  discretion it elects to do
so, make, on the terms and conditions hereinafter set forth, Swing Line Advances
to the Borrower from time to time on any Business Day during the period from the
date  hereof  until the Working  Capital  Termination  Date (i) in an  aggregate
amount  not to  exceed  at any time  outstanding  $5,000,000  (the  "Swing  Line
Facility")  and (ii) in an amount  for each such  Swing  Line  Borrowing  not to
exceed the aggregate of the Unused  Working  Capital  Commitments of the Working
Capital  Lenders  at such  time.  No Swing  Line  Advance  shall be used for the
purpose of funding the  payment of  principal  of any other Swing Line  Advance.
Each  Swing  Line  Borrowing  shall be made as a Base Rate  Advance.  Within the
limits of the Swing Line  Facility  and within the limits  referred to in clause
(ii) above,  so long as the Swing Line Bank, in its sole  discretion,  elects to
make Swing Line  Advances,  the Borrower may borrow under this Section  2.01(d),
repay  pursuant to Section  2.04(d) or prepay  pursuant  to Section  2.06(a) and
reborrow under this Section 2.01(d).

     (e) Letters of Credit. The Issuing Bank agrees, on the terms and conditions
hereinafter  set forth, to issue letters of credit (the "Letters of Credit") for
the account of the  Borrower  from time to time on any  Business  Day during the
period from the date hereof until 60 days before the Working Capital Termination
Date (i) in an  aggregate  Available  Amount  for all  Letters  of Credit not to
exceed at any time the Issuing  Bank's Letter of Credit  Commitment at such time
and (ii) in an Available  Amount for each such Letter of Credit not to exceed an
amount equal to the Unused Working  Capital  Commitments of the Working  Capital
Lenders  at such  time.  No Letter  of  Credit  shall  have an  expiration  date
(including  all rights of the Borrower or the  beneficiary  to require  renewal)
later than the earlier of 60 days before the Working  Capital  Termination  Date
and (A) in the case of a Standby  Letter of  Credit  one year  after the date of
issuance  thereof,  but may by its terms be  renewable  annually  upon notice (a
"Notice of Renewal") given to the Issuing Bank and the  Administrative  Agent on
or prior to any date for  notice of renewal  set forth in such  Letter of Credit
but in any event at least three  Business Days prior to the date of the proposed
renewal of such Standby Letter of Credit and upon  fulfillment of the applicable
conditions  set forth in Article III unless such  Issuing  Bank has notified the
Borrower (with a copy to the  Administrative  Agent) on or prior to the date for
notice of  termination  set forth in such  Letter of Credit  but in any event at
least 30 Business  Days prior to the date of  automatic  renewal of its election
not to renew such  Standby  Letter of Credit (a "Notice  of  Termination"))  and



(B) in the case of a Trade Letter of Credit, 180 days after the date of issuance
thereof;  provided  that the terms of each  Standby  Letter  of  Credit  that is
automatically  renewable annually shall (x) require the Issuing Bank that issued
such  Standby  Letter of Credit to give the  beneficiary  named in such  Standby
Letter  of  Credit  notice  of  any  Notice  of  Termination,  (y)  permit  such
beneficiary,  upon receipt of such notice,  to draw under such Standby Letter of
Credit prior to the date such Standby Letter of Credit otherwise would have been
automatically  renewed  and (z) not permit the  expiration  date  (after  giving
effect  to any  renewal)  of such  Standby  Letter  of Credit in any event to be
extended  to a date later than 60 days before the  Working  Capital  Termination
Date.  If either a Notice of Renewal is not given by the Borrower or a Notice of
Termination is given by the Issuing Bank pursuant to the  immediately  preceding
sentence,  such  Standby  Letter of Credit  shall expire on the date on which it
otherwise would have been automatically renewed; provided, however, that even in
the  absence  of  receipt of a Notice of  Renewal  the  Issuing  Bank may in its
discretion, unless instructed to the contrary by the Administrative Agent or the
Borrower,  deem that a Notice of Renewal had been timely  delivered  and in such
case,  a Notice of  Renewal  shall be deemed to have been so  delivered  for all
purposes  under  this  Agreement.  Within  the  limits  of the  Letter of Credit
Facility,  and subject to the limits referred to above, the Borrower may request
the issuance of Letters of Credit under this  Section 2.01(e),  repay any Letter
of  Credit   Advances   resulting   from   drawings   thereunder   pursuant   to
Section 2.03(c)  and request the issuance of additional  Letters of Credit under
this Section 2.01(e).

     SECTION  2.02.  Making the  Advances.  (a) Except as otherwise  provided in
Section 2.02(b) or 2.03, each Borrowing shall be made on notice, given not later
than 11:00 A.M. (Boston,  Massachusetts time) on the third Business Day prior to
the date of the  proposed  Borrowing  in the case of a Borrowing  consisting  of
Eurodollar  Rate  Advances,  or the first  Business Day prior to the date of the
proposed Borrowing in the case of a Borrowing consisting of Prime Rate Advances,
by  the  Borrower  to  the  Administrative  Agent,  which  shall  give  to  each
Appropriate  Lender  prompt  notice  thereof by telex or  telecopier.  Each such
notice of a Borrowing (a "Notice of Borrowing") shall be by telephone, confirmed
immediately in writing,  or telex or telecopier,  in  substantially  the form of
Exhibit B hereto,  specifying  therein the requested (i) date of such Borrowing,
(ii) Facility under which such  Borrowing is to be made,  (iii) Type of Advances
comprising  such Borrowing,  (iv) aggregate  amount of such Borrowing and (v) in
the case of a Borrowing consisting of Eurodollar Rate Advances, initial Interest
Period for each such Advance.  Each Appropriate Lender shall,  before 11:00 A.M.
(Rochester, New York time) on the date of such Borrowing, make available for the
account of its  Applicable  Lending  Office to the  Administrative  Agent at the
Administrative Agent's Account, in same day funds, such Lender's ratable portion
of such  Borrowing  in  accordance  with the  respective  Commitments  under the
applicable Facility of such Lender and the other Appropriate Lenders.  After the
Administrative  Agent's  receipt  of such  funds  and  upon  fulfillment  of the
applicable  conditions set forth in Article III,  the Administrative  Agent will
make such funds  available to the Borrower by crediting the Borrower's  Account;
provided,  however,  that,  in the case of any Working  Capital  Borrowing,  the
Administrative  Agent  shall  first make a portion  of such  funds  equal to the
aggregate  principal  amount of any Swing  Line  Advances  and  Letter of Credit
Advances  made by the Swing Line Bank or the Issuing  Bank,  as the case may be,
and by any other  Working  Capital  Lender and  outstanding  on the date of such
Working Capital Borrowing, plus interest accrued and unpaid thereon to and as of
such date, available to the Swing Line Bank or the Issuing Bank, as the case may
be, and such other  Working  Capital  Lenders for  repayment  of such Swing Line
Advances and Letter of Credit Advances.


     (b) Each Swing Line Borrowing shall be made on notice, given not later than
11:00 A.M.  (Rochester,  New York time) on the date of the  proposed  Swing Line
Borrowing,  by the Borrower to the Swing Line Bank and the Administrative Agent.
Each such notice of a Swing Line Borrowing (a "Notice of Swing Line  Borrowing")
shall be by telephone, confirmed immediately in writing, or telex or telecopier,
specifying therein the requested (i) date of such Borrowing, (ii) amount of such
Borrowing and (iii) maturity of such Borrowing (which maturity shall be no later
than the seventh day after the  requested  date of such  Borrowing).  If, in its
sole discretion,  it elects to make the requested Swing Line Advance,  the Swing
Line Bank will make the amount thereof available to the Administrative  Agent at
the Administrative  Agent's Account, in same day funds. After the Administrative
Agent's receipt of such funds and upon fulfillment of the applicable  conditions
set  forth in  Article III,  the  Administrative  Agent  will  make  such  funds
available to the  Borrower by crediting  the  Borrower's  Account.  Upon written
demand by the Swing Line Bank, with a copy of such demand to the  Administrative
Agent,  each other  Working  Capital  Lender shall  purchase from the Swing Line
Bank,  and the Swing Line Bank shall sell and assign to each such other  Working
Capital  Lender,  such other Lender's Pro Rata Share of such  outstanding  Swing
Line Advance as of the date of such demand,  by making available for the account
of its Applicable Lending Office to the Administrative  Agent for the account of
the Swing Line Bank, by deposit to the Administrative  Agent's Account,  in same
day funds, an amount equal to the portion of the outstanding principal amount of
such Swing Line  Advance to be purchased  by such  Lender.  The Borrower  hereby
agrees to each such sale and  assignment.  Each Working Capital Lender agrees to
purchase  its Pro Rata Share of an  outstanding  Swing  Line  Advance on (i) the
Business Day on which demand  therefor is made by the Swing Line Bank,  provided
that notice of such demand is given not later than  11:00 A.M.  (Rochester,  New
York time) on such Business Day or (ii) the first  Business Day next  succeeding
such  demand if notice of such  demand is given  after such time.  Upon any such
assignment  by the  Swing  Line Bank to any other  Working  Capital  Lender of a
portion of a Swing Line Advance,  the Swing Line Bank represents and warrants to
such other Lender that the Swing Line Bank is the legal and beneficial  owner of
such  interest  being  assigned  by it,  but  makes no other  representation  or
warranty and assumes no responsibility  with respect to such Swing Line Advance,
the Loan  Documents  or any Loan  Party.  If and to the extent  that any Working
Capital  Lender  shall not have so made the amount of such  Swing  Line  Advance
available to the Administrative Agent, such Working Capital Lender agrees to pay
to the  Administrative  Agent  forthwith  on demand  such amount  together  with
interest  thereon,  for each day from the date of demand by the Swing  Line Bank
until the date such amount is paid to the  Administrative  Agent, at the Federal
Funds Rate. If such Lender shall pay to the Administrative Agent such amount for
the account of the Swing Line Bank on any Business  Day,  such amount so paid in
respect of principal  shall  constitute a Swing Line Advance made by such Lender
on  such  Business  Day for  purposes  of this  Agreement,  and the  outstanding
principal  amount of the Swing Line Advance made by the Swing Line Bank shall be
reduced by such amount on such Business Day.

     (c)  Anything  in  subsection (a)  above to the  contrary  notwithstanding,
(i) the  Borrower  may not  select  Eurodollar  Rate  Advances  for the  initial
Borrowing  hereunder  or for  any  Borrowing  if the  aggregate  amount  of such
Borrowing  is less  than  $1,000,000  or if the  obligation  of the  Appropriate
Lenders to make  Eurodollar  Rate Advances  shall then be suspended  pursuant to
Section 2.09 or Section 2.10 and (ii) the Term A Advances may not be outstanding
as part of more  than 5  separate  Borrowings,  the Term B  Advances  may not be



outstanding as part of more than 5 separate  Borrowings and the Working  Capital
Advances  made on any  date  may  not be  outstanding  as  part of more  than 10
separate Borrowings.

     (d) Each Notice of Borrowing  and Notice of Swing Line  Borrowing  shall be
irrevocable  and binding on the Borrower.  In the case of any Borrowing that the
related  Notice of Borrowing  specifies is to be  comprised of  Eurodollar  Rate
Advances, the Borrower shall indemnify each Appropriate Lender against any loss,
cost or expense incurred by such Lender as a result of any failure to fulfill on
or before the date  specified in such Notice of Borrowing for such Borrowing the
applicable  conditions set forth in Article III, including,  without limitation,
any loss (including loss of anticipated  profits),  cost or expense  incurred by
reason of the liquidation or reemployment of deposits or other funds acquired by
such  Lender  to fund  the  Advance  to be made by such  Lender  as part of such
Borrowing  when such Advance,  as a result of such failure,  is not made on such
date.

     (e) Unless the  Administrative  Agent  shall have  received  notice from an
Appropriate  Lender prior to the date of any  Borrowing  under a Facility  under
which such Lender has a Commitment  that such Lender will not make  available to
the  Administrative  Agent such Lender's ratable portion of such Borrowing,  the
Administrative Agent may assume that such Lender has made such portion available
to the  Administrative  Agent on the date of such  Borrowing in accordance  with
subsection (a) or (b) of this Section 2.02 and the Administrative  Agent may, in
reliance  upon such  assumption,  make  available to the Borrower on such date a
corresponding  amount.  If and to the extent that such Lender  shall not have so
made such ratable portion available to the Administrative Agent, such Lender and
the  Borrower  severally  agree  to  repay  or pay to the  Administrative  Agent
forthwith on demand such corresponding  amount and to pay interest thereon,  for
each day from the date such amount is made  available to the Borrower  until the
date such amount is repaid or paid to the  Administrative  Agent,  at (i) in the
case of the Borrower,  the interest  rate  applicable at such time under Section
2.07 to Advances  comprising such Borrowing and (ii) in the case of such Lender,
the Federal  Funds Rate.  If such Lender shall pay to the  Administrative  Agent
such  corresponding  amount,  such amount so paid shall constitute such Lender's
Advance as part of such Borrowing for all purposes.

     (f) The  failure of any Lender to make the Advance to be made by it as part
of any Borrowing shall not relieve any other Lender of its  obligation,  if any,
hereunder to make its Advance on the date of such Borrowing, but no Lender shall
be  responsible  for the  failure of any other  Lender to make the Advance to be
made by such other Lender on the date of any Borrowing.

     SECTION 2.03.  Issuance of and Drawings and Reimbursement  Under Letters of
Credit.  (a) Request for  Issuance.  Each Letter of Credit  shall be issued upon
notice, given not later than 11:00 A.M. (Rochester,  New York time) on the fifth
Business  Day  prior to the date of the  proposed  issuance  of such  Letter  of
Credit,  by  the  Borrower  to  the  Issuing  Bank,  which  shall  give  to  the
Administrative  Agent and each Working  Capital  Lender prompt notice thereof by
telex or  telecopier.  Each  such  notice of  issuance  of a Letter of Credit (a
"Notice of Issuance") shall be by telephone,  confirmed  immediately in writing,
or  telex or  telecopier,  specifying  therein  the  requested  (A) date of such
issuance (which shall be a Business Day), (B) Available Amount of such Letter of
Credit, (C) expiration date of such Letter of Credit, (D)name and address of the
beneficiary of such Letter of Credit and (E) form of such Letter of Credit,  and
shall be accompanied by such application and agreement for letter of credit as



the Issuing  Bank may specify to the Borrower  for use in  connection  with such
requested  Letter of Credit (a "Letter of Credit  Agreement").  If the requested
form of such  Letter of Credit is  acceptable  to the  Issuing  Bank in its sole
discretion, the Issuing Bank will, upon fulfillment of the applicable conditions
set forth in Article III,  make such Letter of Credit  available to the Borrower
at its office  referred  to in  Section 8.02  or as  otherwise  agreed  with the
Borrower in connection  with such issuance.  In the event and to the extent that
the  provisions  of any  Letter of Credit  Agreement  shall  conflict  with this
Agreement, the provisions of this Agreement shall govern.

     (b) Letter of Credit  Reports.  The Issuing  Bank shall  furnish (A) to the
Administrative  Agent on the first  Business  Day of each week a written  report
summarizing issuance and expiration dates of Letters of Credit issued during the
previous week and drawings during such week under all Letters of Credit,  (B) to
each Working  Capital  Lender on the first  Business Day of each month a written
report  summarizing  issuance and  expiration  dates of Letters of Credit issued
during the preceding  month and drawings  during such month under all Letters of
Credit and (C) to the  Administrative  Agent and each Working  Capital Lender on
the first  Business Day of each calendar  quarter a written report setting forth
the average daily  aggregate  Available  Amount  during the  preceding  calendar
quarter of all Letters of Credit.

     (c) Drawing and  Reimbursement.  The payment by the Issuing Bank of a draft
drawn  under any Letter of Credit  shall  constitute  for all  purposes  of this
Agreement  the making by the Issuing Bank of a Letter of Credit  Advance,  which
shall be a Prime Rate Advance,  in the amount of such draft. Upon written demand
by the Issuing  Bank,  with a copy of such demand to the  Administrative  Agent,
each  Working  Capital  Lender shall  purchase  from the Issuing  Bank,  and the
Issuing Bank shall sell and assign to each such  Working  Capital  Lender,  such
Lender's Pro Rata Share of such  outstanding  Letter of Credit Advance as of the
date of such  purchase,  by making  available for the account of its  Applicable
Lending Office to the Administrative  Agent for the account of the Issuing Bank,
by deposit to the Administrative  Agent's Account,  in same day funds, an amount
equal to the  portion  of the  outstanding  principal  amount of such  Letter of
Credit Advance to be purchased by such Lender.  Promptly after receipt  thereof,
the  Administrative  Agent shall  transfer such funds to the Issuing  Bank.  The
Borrower  hereby agrees to each such sale and  assignment.  Each Working Capital
Lender agrees to purchase its Pro Rata Share of an outstanding  Letter of Credit
Advance on (i) the Business Day on which demand  therefor is made by the Issuing
Bank,  provided  notice  of such  demand  is given not  later  than  11:00  A.M.
(Rochester,  New York time) on such Business Day or (ii) the first  Business Day
next  succeeding  such demand if notice of such demand is given after such time.
Upon any such assignment by the Issuing Bank to any other Working Capital Lender
of a portion of a Letter of Credit  Advance,  the Issuing  Bank  represents  and
warrants to such other Lender that the Issuing Bank is the legal and  beneficial
owner of such interest  being  assigned by it, free and clear of any liens,  but
makes no other  representation  or warranty and assumes no  responsibility  with
respect to such Letter of Credit Advance,  the Loan Documents or any Loan Party.
If and to the extent that any Working  Capital Lender shall not have so made the
amount of such Letter of Credit Advance available to the  Administrative  Agent,
such Working Capital Lender agrees to pay to the Administrative  Agent forthwith
on demand such amount together with interest thereon, for each day from the date
of  demand  by the  Issuing  Bank  until  the date  such  amount  is paid to the
Administrative  Agent,  at the Federal Funds Rate for its account or the account



of  the  Issuing  Bank,  as  applicable.   If  such  Lender  shall  pay  to  the
Administrative  Agent such  amount for the  account of the  Issuing  Bank on any
Business  Day,  such amount so paid in respect of principal  shall  constitute a
Letter of Credit  Advance made by such Lender on such  Business Day for purposes
of this Agreement,  and the outstanding principal amount of the Letter of Credit
Advance  made by the  Issuing  Bank  shall be  reduced  by such  amount  on such
Business Day.

     (d) Failure to Make Letter of Credit Advances. The failure of any Lender to
make the  Letter of Credit  Advance  to be made by it on the date  specified  in
Section  2.03(c) shall not relieve any other Lender of its obligation  hereunder
to make its  Letter of  Credit  Advance  on such  date,  but no Lender  shall be
responsible  for the  failure  of any other  Lender to make the Letter of Credit
Advance to be made by such other Lender on such date.

     SECTION  2.04.  Repayment of Advances.  (a) Term A  Advances.  The Borrower
shall repay to the  Administrative  Agent for the ratable  account of the Term A
Lenders the aggregate outstanding principal amount of the Term A Advances on the
following  dates in the amounts  indicated  (which amounts shall be reduced as a
result  of the  application  of  prepayments  in  accordance  with the  order of
priority set forth in Section 2.06):






Date                                                                    Amount
- - ----                                                                    ------
March 31, 1997 ........................................               $2,000,000
June 30, 1997 .........................................               $2,000,000
September 30, 1997 ....................................               $2,000,000
December 31, 1997 .....................................               $2,000,000
March 31, 1998 ........................................               $2,500,000
June 30, 1998 .........................................               $2,500,000
September 30, 1998 ....................................               $2,500,000
December 30, 1998 .....................................               $2,500,000
March 31, 1999 ........................................               $3,000,000
June 30, 1999 .........................................               $3,000,000
September 30, 1999 ....................................               $3,000,000
December 31, 1999 .....................................               $3,000,000
March 31, 2000 ........................................               $3,500,000
June 30, 2000 .........................................               $3,500,000
September 30, 2000 ....................................               $3,500,000
December 30, 2000 .....................................               $3,500,000
March 31, 2001 ........................................               $4,500,000
June 30, 2001 .........................................               $6,500,000



provided,  however,  that the final principal installment shall be repaid on the
Working Capital Termination Date and in any event shall be in an amount equal to
the aggregate principal amount of the Term A Advances outstanding on such date.

     (b) Term B Advances.  The Borrower shall repay to the Administrative  Agent
for  the  ratable  account  of the  Term B  Lenders  the  aggregate  outstanding
principal  amount of the Term B Advances on the  following  dates in the amounts
indicated  (which  amounts  shall be reduced as a result of the  application  of
prepayments in accordance with the order of priority set forth in Section 2.06):

Date                                                                     Amount
- - ----                                                                     ------
March 31, 1997 ........................................               $  250,000
June 30, 1997 .........................................               $  250,000
September 30, 1997 ....................................               $  250,000
December 31, 1997 .....................................               $  250,000
March 31, 1998 ........................................               $  250,000
June 30, 1998 .........................................               $  250,000
September 30, 1998 ....................................               $  250,000
December 31, 1998 .....................................               $  250,000
March 31, 1999 ........................................               $  250,000
June 30, 1999 .........................................               $  250,000
September 30, 1999 ....................................               $  250,000
December 31, 1999 .....................................               $  250,000
March 31, 2000 ........................................               $  250,000
June 30, 2000 .........................................               $  250,000
September 30, 2000 ....................................               $  250,000
December 31, 2000 .....................................               $  250,000
March 31, 2001 ........................................               $2,625,000
June 30, 2001 .........................................               $2,625,000
September 30, 2001 ....................................               $2,625,000
December 31, 2001 .....................................               $2,625,000
March 31, 2002 ........................................               $2,625,000
June 30, 2002 .........................................               $2,625,000
September 30, 2002 ....................................               $2,625,000
December 31, 2002 .....................................               $2,625,000



provided,  however,  that the final principal installment shall be repaid on the
Termination  Date and in any event shall be in an amount equal to the  aggregate
principal amount of the Term B Advances outstanding on such date.

     (c)  Working   Capital   Advances.   The   Borrower   shall  repay  to  the
Administrative  Agent for the ratable  account of the Working Capital Lenders on
the Working Capital Termination Date the aggregate  outstanding principal amount
of the Working Capital Advances then outstanding.

     (d) Swing Line  Advances.  The Borrower  shall repay to the  Administrative
Agent for the  account of each Swing  Line Bank and each other  Working  Capital
Lender that has made a Swing Line Advance the  outstanding  principal  amount of
each Swing Line Advance made by each of them on the earlier of the maturity date
specified in the applicable Notice of Swing Line Borrowing (which maturity shall
be no later than the seventh day after the requested date of such Borrowing) and
the Working Capital Termination Date.

     (e)  Letter  of  Credit  Advances.  (i) The  Borrower  shall  repay  to the
Administrative  Agent for the account of the Issuing Bank and each other Working
Capital Lender that has made a Letter of Credit Advance on the earlier of demand
and the Working Capital  Termination  Date the outstanding  principal  amount of
each Letter of Credit Advance made by each of them.

     (ii) The  Obligations of the Borrower under this  Agreement,  any Letter of
Credit Agreement and any other agreement or instrument relating to any Letter of
Credit shall be  unconditional  and  irrevocable,  and shall be paid strictly in
accordance with the terms of this Agreement, such Letter of Credit Agreement and
such other agreement or instrument under all circumstances,  including,  without
limitation, the following circumstances:

          (A) any lack of validity or enforceability  of any Loan Document,  any
     Letter of Credit Agreement,  any Letter of Credit or any other agreement or
     instrument relating thereto (all of the foregoing being, collectively,  the
     "L/C Related Documents");

          (B) any change in the time,  manner or place of payment  of, or in any
     other term of, all or any of the  Obligations of the Borrower in respect of
     any L/C Related Document or any other amendment or waiver of or any consent
     to departure from all or any of the L/C Related Documents;

          (C) the existence of any claim,  set-off,  defense or other right that
     the Borrower may have at any time against any beneficiary or any transferee
     of a Letter of Credit (or any Persons for whom any such  beneficiary or any
     such  transferee  may be  acting),  the Issuing  Bank or any other  Person,
     whether in connection with the transactions contemplated by the L/C Related
     Documents or any unrelated transaction;



          (D) any statement or any other  document  presented  under a Letter of
     Credit proving to be forged,  fraudulent,  invalid or  insufficient  in any
     respect or any statement therein being untrue or inaccurate in any respect;
     or

          (E) any exchange, release or non-perfection of any Collateral or other
     collateral,  or any  release  or  amendment  or  waiver  of or  consent  to
     departure from the Guaranty or any other  guarantee,  for all or any of the
     Obligations of the Borrower in respect of the L/C Related Documents.

     SECTION 2.05.  Termination or Reduction of the  Commitments.  (a) Optional.
The  Borrower   may,  upon  at  least  three   Business   Days'  notice  to  the
Administrative  Agent,  terminate in whole or reduce in part the unused portions
of the Term A Commitments, the Term B Commitments, the Letter of Credit Facility
and the Unused Working Capital Commitments; provided, however, that each partial
reduction of a Facility  (i) shall be in an aggregate amount of $5,000,000 or an
integral multiple of $1,000,000 in excess thereof and (ii) shall be made ratably
among the Appropriate  Lenders in accordance with their Commitments with respect
to such Facility.

     (b) Mandatory. (i) On the date of the Term A Borrowing, after giving effect
to such Term A Borrowing,  and from time to time  thereafter upon each repayment
or prepayment of the Term A Advances,  the aggregate  Term A Commitments  of the
Term A Lenders shall be  automatically  and permanently  reduced,  on a pro rata
basis,  by an  amount  equal  to  the  amount  by  which  the  aggregate  Term A
Commitments  immediately  prior to such  reduction  exceed the aggregate  unpaid
principal amount of the Term A Advances then outstanding.

     (ii) On the date of the  Term B  Borrowing,  after  giving  effect  to such
Term B  Borrowing,  and from  time to time  thereafter  upon each  repayment  or
prepayment  of the Term B Advances,  the  aggregate  Term B  Commitments  of the
Term B Lenders shall be  automatically  and permanently  reduced,  on a pro rata
basis,  by an  amount  equal  to  the  amount  by  which  the  aggregate  Term B
Commitments  immediately  prior to such  reduction  exceed the aggregate  unpaid
principal amount of the Term B Advances then outstanding.

     (iii) On and after the date that all Term A  Advances  and Term B  Advances
have been repaid in full, the Working  Capital  Facility shall be  automatically
and permanently  reduced on each date on which prepayment thereof is required to
be made pursuant to Section 2.06(b)(i),  (ii) or (iii) in an amount equal to the
applicable  Reduction  Amount,  provided that each such reduction of the Working
Capital  Facility  shall be made ratably  among the Working  Capital  Lenders in
accordance with their Working Capital Commitments.

     (iv) The Letter of Credit  Facility shall be permanently  reduced from time
to time on the date of each  reduction  in the Working  Capital  Facility by the
amount, if any, by which the amount of the Letter of Credit Facility exceeds the
Working  Capital  Facility  after giving effect to such reduction of the Working
Capital Facility.

     SECTION 2.06.  Prepayments.  (a) Optional.  The Borrower may, upon at least
one Business  Day's notice in the case of Prime Rate Advances and three Business



Days'  notice  in the case of  Eurodollar  Rate  Advances,  in each  case to the
Administrative Agent stating the proposed date and aggregate principal amount of
the  prepayment,  and if such  notice is given the  Borrower  shall,  prepay the
outstanding  aggregate  principal amount of the Advances  comprising part of the
same Borrowing in whole or ratably in part,  together with (i) accrued  interest
to the  date of such  prepayment  on the  aggregate  principal  amount  prepaid;
provided,  however,  that (x) each  partial  prepayment shall be in an aggregate
principal  amount of  $1,000,000  or an integral  multiple of $100,000 in excess
thereof and (y) no such  prepayment  of a Eurodollar  Rate Advance shall be made
other than on the last day of an Interest Period therefor.  Each such prepayment
of the Term  Facilities  shall be applied ratably to the Term A Facility and the
Term B Facility and to the principal repayment  installments of each of the Term
A Facility and Term B Facility in inverse order of maturity;  provided, however,
that if any of the  Lenders  under  either  the  Term A  Facility  or the Term B
Facility  elects  to  refuse  its  ratable  share  of any  such  prepayment,  in
accordance with the procedures  described in Section 2.06(c),  the ratable share
of such Lender shall be applied to the  Advances of the Lenders  under such Term
Facility and to the principal repayment installments thereof in inverse order of
maturity,  or if all Lenders in such Term Facility elect to refuse their ratable
share,  to the Advances of the Lenders  under the other Term Facility and to the
principal repayment installments thereof in inverse order of maturity.

     (b) Mandatory.  (i) The Borrower shall, on the fifth day following the date
the Lender  Parties have received or are required to have received  (pursuant to
Section  5.03(d))  the  audited  financials  of PSC for each  fiscal year of the
Borrower,  prepay an aggregate  principal amount of the Advances comprising part
of the same  Borrowings  equal to (x) if the Total Debt Ratio is 3.50:1 or more,
75% of Excess  Cash Flow for such  Fiscal  Year,  (y) if the Total Debt Ratio is
less than 3.50:1 but more than 2.49:1,  50%,  and (z) at all other times,  0% of
Excess Cash Flow for such fiscal  year.  Each such  prepayment  shall be applied
first  ratably  to the  Term A  Facility,  and the Term B  Facility,  and to the
installments  thereof in inverse  order of  maturity  and second to the  Working
Capital Facility as set forth in clause (vi) below.

     (ii) PSC and the  Borrower  shall,  on the date of  receipt of the Net Cash
Proceeds by any Loan Party or any of its Subsidiaries  from (A) the sale, lease,
transfer  or other  disposition  of any  assets of any Loan  Party or any of its
Subsidiaries  (other  than any sale,  lease,  transfer or other  disposition  of
assets  pursuant  to clause  (i) of  Section  5.02(e)),  (B) the  incurrence  or
issuance  by any Loan Party or any of its  Subsidiaries  of any Debt (other than
Debt incurred or issued  pursuant to clause  Section  5.02(b)),  (C) the sale or
issuance by any Loan Party (other than PSC) or any of the other  Subsidiaries of
any PSC capital  stock or other  ownership or profit  interest,  any  securities
convertible  into or exchangeable for capital stock or other ownership or profit
interest or any  warrants,  rights or options to acquire  capital stock or other
ownership or profit interest and (D) any  Extraordinary  Receipt  received by or
paid to or for the account of any Loan Party or any of its  Subsidiaries and not
otherwise  included  in  clause  (A),  (B) or (C)  above,  prepay  an  aggregate
principal amount of the Advances comprising part of the same Borrowings equal to
the  amount of such Net Cash  Proceeds.  Each such  prepayment  shall be applied
first,  ratably  to the  Term A  Facility  and the  Term B  Facility  and to the
installments  thereof in inverse  order of  maturity  and second to the  Working
Capital Facility as set forth in clause (vi) below.



     (iii) PSC and the  Borrower  shall,  on the date of receipt of the Net Cash
Proceeds by any Loan Party or any of its Subsidiaries  from the sale or issuance
by  PSC of any  capital  stock  or  other  ownership  or  profit  interest,  any
securities convertible into or exchangeable for capital stock or other ownership
or profit interest, or any warrants,  rights or options to acquire capital stock
or other  ownership or profit  interest,  prepay an  aggregate  principal of the
Advances  comprising part of the same Borrowings  equal to (x) if the Total Debt
Ratio is 3.5:1 or more,  100% of the  amount  of such Net Cash  Proceeds  to the
extent,  and only to the extent,  that such Net Cash  Proceeds are  necessary to
reduce  the Total  Debt Ratio to less than 3.5:1 and (y) if the Total Debt Ratio
is less than 3.5:1, 0% of such Net Cash Proceeds.

     (iv)  The  Borrower  shall,  on each  Business  Day,  prepay  an  aggregate
principal  amount of the Working  Capital  Advances  comprising part of the same
Borrowings,  and the Letter of Credit Advances and the Swing Line Advances equal
to the amount by which (A) the sum of the aggregate  principal amount of (x) the
Working Capital Advances and (y) the Letter of Credit Advances and (z) the Swing
Line  Advances  then  outstanding  plus the  aggregate  Available  Amount of all
Letters of Credit then outstanding exceeds (B) the lesser of the Working Capital
Facility and the Borrowing Base on such Business Day.

     (v) The Borrower  shall,  on each Business  Day, pay to the  Administrative
Agent for deposit in the L/C Cash  Collateral  Account an amount  sufficient  to
cause the  aggregate  amount on deposit  in such  Account to equal the amount by
which the aggregate  Available  Amount of all Letters of Credit then outstanding
exceeds the Letter of Credit Facility on such Business Day.

     (vi)  Prepayments of the Working  Capital  Facility made pursuant to clause
(i),  (ii) or (iii)  above  shall be first  applied  to prepay  Letter of Credit
Advances then outstanding  until such Advances are paid in full,  second applied
to prepay Swing Line Advances then  outstanding  until such Advances are paid in
full,  third  applied  to  prepay  Working  Capital  Advances  then  outstanding
comprising part of the same Borrowings until such Advances are paid in full, and
fourth deposited in the L/C Cash Collateral  Account to cash  collateralize 100%
of the Available Amount of the Letters of Credit then  outstanding;  and, in the
case of prepayments of the Working Capital Facility  required pursuant to clause
(i) or (ii) above, the amount remaining (if any) after the prepayment in full of
the  Advances  then  outstanding  and the  100%  cash  collateralization  of the
aggregate  Available  Amount of Letters of Credit then  outstanding  (the sum of
such prepayment  amounts,  cash  collateralization  amounts and remaining amount
being  referred  to herein as the  "Reduction  Amount")  may be  retained by the
Borrower and the Working  Capital  Facility shall be permanently  reduced as set
forth in  Section  2.05(b)(iii).  Upon the  drawing  of any Letter of Credit for
which funds are on deposit in the L/C Cash Collateral Account,  such funds shall
be applied to reimburse  the Issuing  Bank or the Working  Capital  Lenders,  as
applicable.

     (vii) All prepayments under this subsection (b) shall be made together with
accrued interest to the date of such prepayment on the principal amount prepaid.

     (c)  Application  of  Prepayments  to the  Term A  Facility  and the Term B
Facility. Upon receipt of any amounts to be applied to the prepayment in respect
of the Term A Facility and the Term B Facility  pursuant to this  Section  2.06,



the Administrative  Agent shall apply such amounts to the prepayment of the Term
A Advances and Term B Advance  ratably;  provided  however,  that if within five
Business Days of receiving notice from the Administrative Agent of a prepayment,
any Term A Lender or any Term B Lender notifies the Administrative Agent that it
elects to refuse to accept the  prepayment  of its Term A Advances or its Term B
Advances,  as the case may be, the Administrative  Agent shall apply the portion
of such  prepayment  that would have been  allocated  to the  repayment  of such
Lender's  Term A  Advances  or the Term B  Advances,  as the case may be, to the
prepayment of the Advances of the other Lenders under the same Term Facility and
to the principal repayment installments thereof in inverse order of maturity or,
if all Lenders under such Term  Facility  elect to refuse their ratable share of
such  prepayment,  to the Advances of the Lenders  under the other Term Facility
and  to the  principal  repayment  installments  thereof  in  inverse  order  of
maturity.  If any Term A Lender or Term B Lender  shall  not give  notice to the
Administrative  Agent within such five Business Day period,  the  Administrative
Agent shall assume that such Lender shall have accepted such prepayment.

     SECTION 2.07.  Interest.  (a) Scheduled  Interest.  The Borrower  shall pay
interest on the unpaid  principal  amount of each  Advance  owing to each Lender
from the date of such Advance until such principal amount shall be paid in full,
at the following rates per annum:

          (i) Prime Rate  Advances.  During  such  periods as such  Advance is a
     Prime Rate  Advance,  a rate per annum equal at all times to the sum of (A)
     the Prime Rate in effect from time to time plus (B) the  Applicable  Margin
     in effect from time to time,  payable in arrears monthly on the last day of
     each month  during  such  periods  and on the date such Prime Rate  Advance
     shall be Converted or paid in full.

          (ii) Eurodollar Rate Advances.  During such periods as such Advance is
     a Eurodollar Rate Advance,  a rate per annum equal at all times during each
     Interest Period for such Advance to the sum of (A) the  Eurodollar Rate for
     such  Interest  Period for such Advance plus (B) the  Applicable  Margin in
     effect on the first day of such Interest Period,  payable in arrears on the
     last  day of such  Interest  Period  and,  if such  Interest  Period  has a
     duration of more than three  months,  on each day that  occurs  during such
     Interest  Period  every three  months  from the first day of such  Interest
     Period and on the date such  Eurodollar  Rate Advance shall be Converted or
     paid in full.

     (b) Default  Interest.  Upon the occurrence and during the continuance of a
Default,  the Borrower shall pay interest on (i) the unpaid  principal amount of
each Advance owing to each Lender,  payable in arrears on the dates  referred to
in clause  (a)(i) or (a)(ii)  above and on demand,  at a rate per annum equal at
all times to 2% per annum  above the rate per annum  required to be paid on such
Advance  pursuant  to clause  (a)(i) or  (a)(ii)  above and (ii) to the  fullest
extent permitted by law, the amount of any interest, fee or other amount payable
hereunder  that is not paid when due,  from the date  such  amount  shall be due
until  such  amount  shall be paid in full,  payable in arrears on the date such
amount  shall be paid in full and on  demand,  at a rate per annum  equal at all
times to 2% per annum above the rate per annum  required to be paid, in the case
of interest,  on the Type of Advance on which such interest has accrued pursuant
to clause   (a)(i) or (a)(ii)  above,  and,  in all other  cases,  on Prime Rate
Advances pursuant to clause (a)(i) above.



     (c)  Notice  of  Interest  Rate.  Promptly  after  receipt  of a Notice  of
Borrowing  pursuant  to Section  2.02(a),  the  Administrative  Agent shall give
notice to the Borrower and each  Appropriate  Lender of the applicable  interest
rate  determined  by the  Administrative  Agent for purposes of clause (a)(i) or
(ii).

     SECTION  2.08.  Fees.  (a)  Commitment  Fee. The Borrower  shall pay to the
Administrative  Agent for the account of the Lenders a commitment  fee, from the
date  hereof in the case of each  Initial  Lender  and from the  effective  date
specified in the Assignment and Acceptance  pursuant to which it became a Lender
in the case of each other Lender until the Termination Date,  payable in arrears
on the date of the initial Borrowing hereunder, thereafter quarterly on the last
Business Day of each March, June, September, and December,  commencing September
30,  1996,  and on the  Termination  Date,  at a rate  per  annum  equal  to the
Commitment   Fee  Percentage  on  the  average  daily  unused  portion  of  each
Appropriate  Lender's Term A Commitment  and Term B Commitment and on the sum of
the average daily Unused Working Capital  Commitment of such Lender plus its Pro
Rata Share of the average  daily  outstanding  Swing Line  Advances  during such
quarter; provided,  however, that any commitment fee accrued with respect to any
of the  Commitments  of a Defaulting  Lender during the period prior to the time
such  Lender  became a  Defaulting  Lender  and unpaid at such time shall not be
payable by the  Borrower so long as such  Lender  shall be a  Defaulting  Lender
except to the extent that such  commitment fee shall otherwise have been due and
payable  by the  Borrower  prior to such  time;  and  provided  further  that no
commitment fee shall accrue on any of the Commitments of a Defaulting  Lender so
long as such Lender shall be a Defaulting Lender.

     (b)  Letter  of  Credit  Fees,  Etc.  (i)  The  Borrower  shall  pay to the
Administrative   Agent  for  the  account  of  each  Working  Capital  Lender  a
commission, payable in arrears quarterly on the last Business Day of each March,
June, September and December, commencing September 30, 1996, and on the earliest
to occur of the full drawing expiration, termination or cancellation of any such
Letter of Credit and on the Termination Date, on such Lender's Pro-Rata Share of
the average daily aggregate  Available Amount during such quarter of all Letters
of  Credit  outstanding  from  time to time at the rate per  annum  equal to the
Applicable  Margin  then in effect for  Eurodollar  Advances  under the  Working
Capital Facility.

     (ii) The Borrower shall pay to the Issuing Bank, for its own account,  such
commissions,  issuance  fees,  fronting  fees,  transfer fees and other fees and
charges in  connection  with the  issuance or  administration  of each Letter of
Credit as the Borrower and the Issuing Bank shall agree.

     (c)   Administrative   Agent's  Fees.   The  Borrower   shall  pay  to  the
Administrative  Agent for its own account  such fees as may from time to time be
agreed between the Borrower and the Administrative Agent.

     SECTION 2.09. Conversion of Advances. (a) Optional. The Borrower may on any
Business  Day,  upon  notice  given to the  Administrative  Agent not later than
11:00 A.M.  (Rochester,  New York time) on the third  Business  Day prior to the
date of the proposed  Conversion and subject to the provisions of  Sections 2.07
and 2.10, Convert all or any portion of the Advances of one Type comprising the



same  Borrowing  into Advances of the other Type;  provided,  however,  that any
Conversion  of Eurodollar  Rate Advances into Prime Rate Advances  shall be made
only on the last day of an Interest  Period for such  Eurodollar  Rate Advances,
any Conversion of Prime Rate Advances into  Eurodollar Rate Advances shall be in
an amount not less than the minimum  amount  specified  in  Section 2.02(c),  no
Conversion  of any  Advances  shall  result  in more  separate  Borrowings  than
permitted under  Section 2.02(c) and each Conversion of Advances comprising part
of the same  Borrowing  under  any  Facility  shall be made  ratably  among  the
Appropriate  Lenders in accordance with their  Commitments  under such Facility.
Each such notice of Conversion shall,  within the restrictions  specified above,
specify (i) the date of such Conversion,  (ii) the  Advances to be Converted and
(iii) if such Conversion is into  Eurodollar Rate Advances,  the duration of the
initial  Interest Period for such Advances.  Each notice of Conversion  shall be
irrevocable and binding on the Borrower.

     (b)  Mandatory.  (i) On the date on which the  aggregate  unpaid  principal
amount of Eurodollar Rate Advances comprising any Borrowing shall be reduced, by
payment or prepayment or otherwise, to less than $1,000,000, such Advances shall
automatically Convert into Prime Rate Advances.

     (ii) If the  Borrower  shall fail to select the  duration  of any  Interest
Period for any  Eurodollar  Rate  Advances  in  accordance  with the  provisions
contained  in  the  definition  of  "Interest   Period"  in  Section  1.01,  the
Administrative  Agent will forthwith so notify the Borrower and the  Appropriate
Lenders, whereupon each such Eurodollar Rate Advance will automatically,  on the
last day of the then existing  Interest  Period  therefor,  Convert into a Prime
Rate Advance.

     (iii) Upon the  occurrence and during the  continuance of any Default,  (x)
each  Eurodollar  Rate Advance will  automatically,  on the last day of the then
existing Interest Period therefor, Convert into a Prime Rate Advance and (y) the
obligation of the Lenders to make, or to Convert Advances into,  Eurodollar Rate
Advances shall be suspended.

     SECTION  2.10.  Increased  Costs,  Etc.  (a)  If,  due to  either  (i)  the
introduction  of or any change  (other than any change by way of  imposition  or
increase  of) reserve  requirements  included  in the  Eurodollar  Rate  Reserve
Percentage)  in or in the  interpretation  of any law or  regulation or (ii) the
compliance  with  any  guideline  or  request  from  any  central  bank or other
governmental  authority (whether or not having the force of law), there shall be
any  increase in the cost to any Lender  Party of agreeing to make or of making,
funding or  maintaining  Eurodollar  Rate Advances or of agreeing to issue or of
issuing or maintaining  Letters of Credit or of agreeing to make or of making or
maintaining  Letter of Credit  Advances  (excluding for purposes of this Section
2.10 any such  increased  costs  resulting  from (A) Taxes or Other Taxes (as to
which  Section 2.12 shall  govern) and  (B) changes  in the basis of taxation of
overall  net  income or  overall  gross  income by the  United  States or by the
foreign  jurisdiction  or state  under the laws of which  such  Lender  Party is
organized or has its  Applicable  Lending  Office or any  political  subdivision
thereof),  then the Borrower shall from time to time, upon demand by such Lender
Party  (with a copy of such  demand  to the  Administrative  Agent),  pay to the
Administrative  Agent for the account of such Lender  Party  additional  amounts
sufficient to compensate  such Lender Party for such increased  cost;  provided,
however,  that a Lender Party  claiming  additional  amounts  under this Section
2.10(a) agrees to use reasonable efforts (consistent with its internal policy



and legal and  regulatory  restrictions)  to  designate a  different  Applicable
Lending Office if the making of such a designation  would avoid the need for, or
reduce the amount of, such increased  cost that may thereafter  accrue and would
not,  in  the   reasonable   judgment  of  such  Lender   Party,   be  otherwise
disadvantageous  to such Lender Party.  A  certificate  as to the amount of such
increased  cost,  submitted  to the  Borrower  by such  Lender  Party,  shall be
conclusive and binding for all purposes, absent manifest error.

     (b) If, due to either  (i) the  introduction  of or any change in or in the
interpretation  of  any  law or  regulation  or  (ii) the  compliance  with  any
guideline  or request  from any  central  bank or other  governmental  authority
(whether  or not having the force of law),  there  shall be any  increase in the
amount of capital required or reasonably expected to be maintained by any Lender
Party or any corporation  controlling  such Lender Party as a result of or based
upon the existence of such Lender Party's commitment to lend or to issue Letters
of Credit  hereunder  and other  commitments  of such  type or the  issuance  or
maintenance of the Letters of Credit (or similar contingent obligations),  then,
upon  demand  by  such  Lender  Party  (with  a  copy  of  such  demand  to  the
Administrative  Agent), the Borrower shall pay to the  Administrative  Agent for
the account of such Lender Party,  from time to time as specified by such Lender
Party,  additional  amounts  sufficient to  compensate  such Lender Party in the
light of such  circumstances,  to the extent that such Lender  Party  reasonably
determines  such  increase in capital to be allocable  to the  existence of such
Lender Party's  commitment to lend or to issue Letters of Credit hereunder or to
the issuance or maintenance  of any Letters of Credit.  A certificate as to such
amounts  submitted to the Borrower by such Lender Party shall be conclusive  and
binding for all purposes, absent manifest error.

     (c) If, with respect to any  Eurodollar  Rate Advances  under any Facility,
Lenders owed at least  66-2/3% of the then  aggregate  unpaid  principal  amount
thereof  notify  the  Administrative  Agent  that  the  Eurodollar  Rate for any
Interest  Period for such Advances will not adequately  reflect the cost to such
Lenders of making,  funding or maintaining  their  Eurodollar  Rate Advances for
such Interest  Period,  the  Administrative  Agent shall forthwith so notify the
Borrower and the Appropriate  Lenders,  whereupon  (i) each such Eurodollar Rate
Advance  under  any  Facility  will  automatically,  on the last day of the then
existing  Interest  Period  therefor,  Convert  into a Prime  Rate  Advance  and
(ii) the  obligation of the Appropriate  Lenders to make, or to Convert Advances
into, Eurodollar Rate Advances shall be suspended until the Administrative Agent
shall  notify  the  Borrower  that  such  Lenders  have   determined   that  the
circumstances causing such suspension no longer exist.

     (d)  Notwithstanding  any  other  provision  of  this  Agreement,   if  the
introduction  of or  any  change  in or in  the  interpretation  of  any  law or
regulation  shall make it unlawful,  or any central  bank or other  governmental
authority  shall  assert that it is unlawful,  for any Lender or its  Eurodollar
Lending  Office to perform its  obligations  hereunder to make  Eurodollar  Rate
Advances or to continue to fund or maintain  Eurodollar Rate Advances hereunder,
then,  on notice  thereof and demand  therefor  by such  Lender to the  Borrower
through the  Administrative  Agent,  (i) each Eurodollar Rate Advance under each
Facility under which such Lender has a Commitment will automatically,  upon such
demand,  Convert  into a Prime  Rate  Advance  and  (ii) the  obligation  of the
Appropriate  Lenders  to make,  or to Convert  Advances  into,  Eurodollar  Rate
Advances  shall be  suspended  until the  Administrative  Agent shall notify the
Borrower that such Lender has  determined  that the  circumstances  causing such
suspension no longer exist; provided, however, that, before making any such



demand,  such  Lender  agrees to use  reasonable  efforts  (consistent  with its
internal policy and legal and regulatory  restrictions) to designate a different
Eurodollar  Lending Office if the making of such a designation  would allow such
Lender or its Eurodollar  Lending Office to continue to perform its  obligations
to make Eurodollar  Rate Advances or to continue to fund or maintain  Eurodollar
Rate  Advances  and would not, in the  judgment  of such  Lender,  be  otherwise
disadvantageous to such Lender.

     SECTION 2.11.  Payments and Computations.  (a) The Borrower shall make each
payment hereunder and under the Notes, irrespective of any right of counterclaim
or set-off (except as otherwise  provided in Section 2.15), not later than 11:00
A.M.  (Rochester,  New York  time) on the day  when due in U.S.  dollars  to the
Administrative  Agent at the  Administrative  Agent's Account in same day funds.
The  Administrative  Agent  will  promptly  thereafter  cause  like  funds to be
distributed  (i) if such  payment by the  Borrower  is in respect of  principal,
interest,  commitment fees or any other  Obligation  then payable  hereunder and
under the Notes to more than one Lender  Party,  to such Lender  Parties for the
account of their  respective  Applicable  Lending  Offices ratably in accordance
with the  amounts of such  respective  Obligations  then  payable to such Lender
Parties and (ii) if such payment by the Borrower is in respect of any Obligation
then payable hereunder to one Lender Party, to such Lender Party for the account
of its Applicable  Lending Office, in each case to be applied in accordance with
the terms of this Agreement. Upon its acceptance of an Assignment and Acceptance
and recording of the information  contained  therein in the Register pursuant to
Section  8.07(d),  from and  after the  effective  date of such  Assignment  and
Acceptance, the Administrative Agent shall make all payments hereunder and under
the Notes in  respect of the  interest  assigned  thereby  to the  Lender  Party
assignee  thereunder,  and the parties to such  Assignment and Acceptance  shall
make all  appropriate  adjustments  in such  payments for periods  prior to such
effective date directly between themselves.

     (b) If the  Administrative  Agent  receives  funds for  application  to the
Obligations  under the Loan  Documents  under  circumstances  for which the Loan
Documents do not specify the Advances or the Facility to which, or the manner in
which, such funds are to be applied, the Administrative Agent may, but shall not
be obligated to, elect to distribute  such funds to each Lender Party ratably in
accordance with such Lender Party's  proportionate share of the principal amount
of all  outstanding  Advances and the Available  Amount of all Letters of Credit
then outstanding, in repayment or prepayment of such of the outstanding Advances
or other  Obligations  owed to such Lender Party,  and for  application  to such
principal installments, as the Administrative Agent shall direct.

     (c) The Borrower hereby  authorizes each Lender Party, if and to the extent
payment owed to such Lender Party is not made when due hereunder or, in the case
of a Lender,  under the Note held by such  Lender,  to charge  from time to time
against any or all of the Borrower's  accounts with such Lender Party any amount
so due.

     (d) All  computations  of interest,  fees and Letter of Credit  commissions
shall be made by the Administrative Agent on the basis of a year of 360 days, in
each case for the actual number of days  (including  the first day but excluding
the  last  day)  occurring  in the  period  for  which  such  interest,  fees or
commissions are payable. Each determination by the Administrative Agent of



an interest  rate, fee or commission  hereunder  shall be conclusive and binding
for all purposes, absent manifest error.

     (e) Whenever any payment hereunder or under the Notes shall be stated to be
due on a day other than a Business  Day,  such payment shall be made on the next
succeeding  Business  Day,  and such  extension  of time  shall in such  case be
included in the  computation  of payment of interest or  commitment  fee, as the
case may be; provided,  however,  that, if such extension would cause payment of
interest on or  principal  of  Eurodollar  Rate  Advances to be made in the next
following  calendar  month,  such  payment  shall be made on the next  preceding
Business Day.

     (f) Unless the  Administrative  Agent shall have  received  notice from the
Borrower  prior to the date on which  any  payment  is due to any  Lender  Party
hereunder   that  the  Borrower  will  not  make  such  payment  in  full,   the
Administrative  Agent may assume that the Borrower has made such payment in full
to the Administrative  Agent on such date and the  Administrative  Agent may, in
reliance upon such assumption, cause to be distributed to each such Lender Party
on such due date an amount  equal to the amount then due such Lender  Party.  If
and to the extent the  Borrower  shall not have so made such  payment in full to
the   Administrative   Agent,   each  such  Lender  Party  shall  repay  to  the
Administrative  Agent forthwith on demand such amount distributed to such Lender
Party together with interest thereon,  for each day from the date such amount is
distributed  to such Lender  Party until the date such Lender  Party repays such
amount to the Administrative Agent, at the Federal Funds Rate.

     SECTION 2.12. Taxes. (a) Any and all payments by the Borrower  hereunder or
under the Notes shall be made, in accordance  with Section 2.11,  free and clear
of and  without  deduction  for any and all  present  or future  taxes,  levies,
imposts, deductions,  charges or withholdings,  and all liabilities with respect
thereto,  excluding,  in the case of each  Lender  Party and the  Administrative
Agent,  net income  taxes that are  imposed by the United  States and net income
taxes (or  franchise  taxes  imposed in lieu  thereof)  that are imposed on such
Lender Party or the  Administrative  Agent by the state or foreign  jurisdiction
under the laws of which such Lender  Party or the  Administrative  Agent (as the
case may be) is organized or any political  subdivision thereof and, in the case
of each Lender  Party,  net income  taxes (or  franchise  taxes  imposed in lieu
thereof)  that  are  imposed  on such  Lender  Party  by the  state  or  foreign
jurisdiction of such Lender Party's  Applicable  Lending Office or any political
subdivision thereof (all such non-excluded taxes, levies,  imposts,  deductions,
charges,  withholdings and liabilities in respect of payments hereunder or under
the Notes being  hereinafter  referred to as "Taxes").  If the Borrower shall be
required  by law to  deduct  any Taxes  from or in  respect  of any sum  payable
hereunder or under any Note to any Lender Party or the Administrative Agent, (i)
the sum payable  shall be increased as may be necessary so that after making all
required deductions  (including deductions applicable to additional sums payable
under this Section 2.12) such Lender Party or the  Administrative  Agent (as the
case may be) receives an amount  equal to the sum it would have  received had no
such  deductions  been made,  (ii) the  Borrower shall make such  deductions and
(iii) the Borrower shall pay the full amount  deducted to the relevant  taxation
authority or other authority in accordance with applicable law.


     (b) In  addition,  the  Borrower  shall pay any  present  or future  stamp,
documentary,  excise,  property or similar  taxes,  charges or levies that arise
from any  payment  made  hereunder  or under  the  Notes or from the  execution,
delivery or  registration  of,  performing  under, or otherwise with respect to,
this Agreement or the Notes (hereinafter referred to as "Other Taxes").

     (c) The Borrower shall  indemnify each Lender Party and the  Administrative
Agent for the full amount of Taxes and Other  Taxes,  and for the full amount of
taxes imposed by any  jurisdiction on amounts  payable under this  Section 2.12,
imposed on or paid by such Lender Party or the Administrative Agent (as the case
may be) and any liability (including  penalties,  additions to tax, interest and
expenses) arising therefrom or with respect thereto.  This indemnification shall
be made  within 30 days from the date such  Lender  Party or the  Administrative
Agent (as the case may be) makes written demand therefor.

     (d) Within 30 days after the date of any  payment  of Taxes,  the  Borrower
shall  furnish  to the  Administrative  Agent,  at its  address  referred  to in
Section 8.02,  the original  receipt of payment  thereof or a certified  copy of
such receipt.  In the case of any payment  hereunder or under the Notes by or on
behalf of the Borrower through an account or branch outside the United States or
by or on behalf of the Borrower by a payor that is not a United  States  person,
if the Borrower  determines  that no Taxes are payable in respect  thereof,  the
Borrower  shall  furnish,   or  shall  cause  such  payor  to  furnish,  to  the
Administrative  Agent, at such address,  an opinion of counsel acceptable to the
Administrative  Agent  stating  that such  payment  is exempt  from  Taxes.  For
purposes of this  subsection (d) and  subsection (e),  the terms "United States"
and "United States person" shall have the meanings  specified in Section 7701 of
the Internal Revenue Code.

     (e) Each Lender Party  organized  under the laws of a jurisdiction  outside
the United States  shall,  on or prior to the date of its execution and delivery
of this Agreement in the case of each Initial Lender or Initial Issuing Bank, as
the case may be, and on the date of the Assignment  and  Acceptance  pursuant to
which it became a Lender Party in the case of each other Lender Party,  and from
time  to  time  thereafter  as  requested  in  writing  by the  Borrower  or the
Administrative  Agent (but only so long  thereafter as such Lender Party remains
lawfully  able  to do so),  provide  each of the  Administrative  Agent  and the
Borrower  with two original  Internal  Revenue  Service  forms 1001 or 4224,  as
appropriate,  or any successor or other form prescribed by the Internal  Revenue
Service,  certifying  that such  Lender is exempt  from or entitled to a reduced
rate of United States  withholding tax on payments pursuant to this Agreement or
the Notes. If the forms provided by a Lender Party at the time such Lender Party
first  becomes a party to this  Agreement  indicates  a United  States  interest
withholding  tax rate in excess of zero,  withholding  tax at such rate shall be
considered  excluded from Taxes unless and until such Lender Party  provides the
appropriate  form certifying that a lesser rate applies,  whereupon  withholding
tax at such lesser rate only shall be considered excluded from Taxes for periods
governed by such form; provided, however, that, if at the date of the Assignment
and  Acceptance  pursuant  to  which a  Lender  Party  becomes  a party  to this
Agreement,   the  Lender  Party   assignor   was  entitled  to  payments   under
subsection (a)  in  respect of United  States  withholding  tax with  respect to
interest paid at such date,  then, to such extent,  the term Taxes shall include
(in  addition  to  withholding  taxes that may be imposed in the future or other
amounts  otherwise  includable in Taxes) United States  withholding tax, if any,
applicable  with respect to the Lender Party  assignee on such date. If any form
or document  referred  to in this  subsection (e)  requires  the  disclosure  of
information,  other than  information  necessary  to compute the tax payable and
information required on the date hereof by Internal Revenue Service form 1001 or


     Lender  Party  reasonably  considers to be  confidential,  the Lender Party
shall give notice  thereof to the Borrower and shall not be obligated to include
in such form or document such confidential information.

     (f) For any  period  with  respect  to which a Lender  Party has  failed to
provide the Borrower  with the  appropriate  form  described in  subsection  (e)
(other than if such failure is due to a change in law  occurring  after the date
on which a form originally was required to be provided or if such form otherwise
is not required under  subsection  (e)), such Lender Party shall not be entitled
to indemnification  under subsection (a) or (c) with respect to Taxes imposed by
the United States by reason of such failure;  provided,  however,  that should a
Lender  Party become  subject to Taxes  because of its failure to deliver a form
required  hereunder,  the  Borrower  shall take such steps as such Lender  Party
shall reasonably request to assist such Lender Party to recover such Taxes.

     (g) Any Lender Party claiming any additional  amounts  payable  pursuant to
this Section 2.12 agrees to use reasonable efforts (consistent with its internal
policy and legal and regulatory  restrictions) to change the jurisdiction of its
Eurodollar  Lending  Office if the making of such a change  would avoid the need
for, or reduce the amount of, any such  additional  amounts that may  thereafter
accrue and would not,  in the  reasonable  judgment  of such  Lender  Party,  be
otherwise disadvantageous to such Lender Party.

     SECTION 2.13. Sharing of Payments, Etc. If any Lender Party shall obtain at
any time any payment (whether  voluntary,  involuntary,  through the exercise of
any right of  set-off,  or  otherwise)  (a) on  account of  Obligations  due and
payable  to such  Lender  Party  hereunder  and  under the Notes at such time in
excess of its ratable share  (according  to the  proportion of (i) the amount of
such  Obligations  due and payable to such Lender Party at such time to (ii) the
aggregate  amount of the  Obligations  due and  payable  to all  Lender  Parties
hereunder  and under the  Notes at such  time) of  payments  on  account  of the
Obligations due and payable to all Lender Parties  hereunder and under the Notes
at such time  obtained by all the Lender  Parties at such time or (b) on account
of  Obligations  owing (but not due and payable) to such Lender Party  hereunder
and under the Notes at such time in excess of its ratable  share  (according  to
the proportion of (i) the amount of such Obligations  owing to such Lender Party
at such time to (ii) the  aggregate amount of the Obligations owing (but not due
and payable) to all Lender  Parties  hereunder and under the Notes at such time)
of payments on account of the Obligations owing (but not due and payable) to all
Lender Parties hereunder and under the Notes at such time obtained by all of the
Lender Parties at such time, such Lender Party shall forthwith purchase from the
other Lender Parties such  participations  in the Obligations due and payable or
owing  to  them,  as the  case may be,  as  shall  be  necessary  to cause  such
purchasing  Lender Party to share the excess payment  ratably with each of them;
provided,  however,  that  if all or any  portion  of  such  excess  payment  is
thereafter  recovered from such purchasing Lender Party, such purchase from each
other Lender Party shall be rescinded and such other Lender Party shall repay to
the  purchasing  Lender  Party the  purchase  price to the extent of such Lender
Party's  ratable share  (according to the  proportion of (i) the purchase  price
paid to such  Lender  Party to (ii) the  aggregate  purchase  price  paid to all
Lender  Parties) of such  recovery  together with an amount equal to such Lender
Party's  ratable share  (according  to the  proportion of (i) the amount of such
other Lender  Party's  required  repayment to (ii) the total amount so recovered
from the  purchasing  Lender  Party) of any  interest  or other  amount  paid or
payable  by the  purchasing  Lender  Party in  respect  of the  total  amount so


The Borrower  agrees that any Lender Party so  purchasing a  participation  from
another  Lender Party  pursuant to this Section 2.13 may, to the fullest  extent
permitted  by law,  exercise all its rights of payment  (including  the right of
set-off)  with  respect to such  participation  as fully as if such Lender Party
were the direct creditor of the Borrower in the amount of such participation.

     SECTION 2.14.  Use of Proceeds.  The proceeds of the Advances and issuances
of Letters of Credit shall be available  (and the Borrower  agrees that it shall
use such  proceeds  and Letters of Credit)  solely to pay to the Company and the
other owners of the Acquired  Assets and  Liabilities  the  consideration  to be
received  by  them  from  PSC  and  PSC  Acquisition  pursuant  to the  Purchase
Agreement, pay transaction fees and expenses and provide working capital for PSC
and its Subsidiaries.

     SECTION 2.15.  Defaulting Lenders.  (a) In the event that, at any one time,
(i) any Lender Party shall be a Defaulting  Lender,  (ii) such Defaulting Lender
shall owe a Defaulted  Advance to the Borrower  and (iii) the Borrower  shall be
required to make any payment  hereunder  or under any other Loan  Document to or
for the account of such Defaulting Lender,  then the Borrower may, so long as no
Default  shall occur or be  continuing  at such time and to the  fullest  extent
permitted by applicable  law, set off and otherwise  apply the Obligation of the
Borrower to make such  payment to or for the account of such  Defaulting  Lender
against the obligation of such Defaulting Lender to make such Defaulted Advance.
In the event that,  on any date,  the  Borrower  shall so set off and  otherwise
apply its  obligation  to make any such payment  against the  obligation of such
Defaulting  Lender to make any such Defaulted  Advance on or prior to such date,
the amount so set off and otherwise applied by the Borrower shall constitute for
all purposes of this  Agreement and the other Loan  Documents an Advance by such
Defaulting  Lender  made on the date under the  Facility  pursuant to which such
Defaulted  Advance  was  originally  required  to have  been  made  pursuant  to
Section 2.01.  Such  Advance  shall  be  a  Prime  Rate  Advance  and  shall  be
considered,  for  all  purposes  of  this  Agreement,  to  comprise  part of the
Borrowing  in  connection  with  which such  Defaulted  Advance  was  originally
required to have been made pursuant to Section 2.01,  even if the other Advances
comprising  such  Borrowing  shall be Eurodollar  Rate Advances on the date such
Advance is deemed to be made pursuant to this subsection (a). The Borrower shall
notify the Administrative  Agent at any time the Borrower exercises its right of
set-off  pursuant to this  subsection (a) and shall set forth in such notice (A)
the name of the Defaulting  Lender and the Defaulted Advance required to be made
by such  Defaulting  Lender and (B) the amount set off and otherwise  applied in
respect of such Defaulted  Advance  pursuant to this subsection (a). Any portion
of such  payment  otherwise  required  to be made by the  Borrower to or for the
account of such  Defaulting  Lender which is paid by the Borrower,  after giving
effect to the amount set off and otherwise  applied by the Borrower  pursuant to
this subsection (a), shall be applied by the  Administrative  Agent as specified
in subsection (b) or (c) of this Section 2.15.

     (b) In the event that,  at any one time,  (i) any  Lender  Party shall be a
Defaulting  Lender,  (ii) such Defaulting Lender shall owe a Defaulted Amount to
the  Administrative  Agent or any of the  other  Lender  Parties  and  (iii) the
Borrower  shall make any payment  hereunder or under any other Loan  Document to
the  Administrative  Agent for the account of such Defaulting  Lender,  then the
Administrative  Agent  may,  on its  behalf or on behalf  of such  other  Lender
Parties and to the fullest  extent  permitted by applicable  law,  apply at such


time the amount so paid by the Borrower to or for the account of such Defaulting
Lender to the payment of each such  Defaulted  Amount to the extent  required to
pay such Defaulted Amount. In the event that the  Administrative  Agent shall so
apply any such amount to the payment of any such  Defaulted  Amount on any date,
the amount so applied  by the  Administrative  Agent  shall  constitute  for all
purposes of this Agreement and the other Loan Documents payment, to such extent,
of such  Defaulted  Amount  on such  date.  Any such  amount so  applied  by the
Administrative   Agent  shall  be  retained  by  the  Administrative   Agent  or
distributed by the Administrative Agent to such other Lender Parties, ratably in
accordance  with the respective  portions of such Defaulted  Amounts  payable at
such time to the Administrative  Agent and such other Lender Parties and, if the
amount of such payment made by the Borrower  shall at such time be  insufficient
to pay all Defaulted Amounts owing at such time to the Administrative  Agent and
the other Lender Parties, in the following order of priority:

          (i) first, to the  Administrative  Agent for any Defaulted Amount then
     owing to the Administrative Agent; and

          (ii)  second,  to the Lender  Parties for any  Defaulted  Amounts then
     owing to such Lender  Parties,  ratably in accordance  with such respective
     Defaulted Amounts then owing to such Lender Parties.

Any  portion  of such  amount  paid by the  Borrower  for  the  account  of such
Defaulting  Lender  remaining,  after giving effect to the amount applied by the
Administrative  Agent pursuant to this  subsection (b),  shall be applied by the
Administrative Agent as specified in subsection (c) of this Section 2.15.

     (c) In the event  that,  at any one time,  (i) any Lender  Party shall be a
Defaulting Lender, (ii) such Defaulting Lender shall not owe a Defaulted Advance
or a Defaulted Amount and (iii) the Borrower,  the  Administrative  Agent or any
other Lender Party shall be required to pay or distribute  any amount  hereunder
or under  any other  Loan  Document  to or for the  account  of such  Defaulting
Lender,  then the  Borrower or such other  Lender Party shall pay such amount to
the Administrative Agent to be held by the Administrative  Agent, to the fullest
extent permitted by applicable law, in escrow or the Administrative Agent shall,
to the fullest  extent  permitted by applicable  law, hold in escrow such amount
otherwise held by it. Any funds held by the Administrative Agent in escrow under
this subsection (c) shall be deposited by the Administrative Agent in an account
with Fleet, in the name and under the control of the  Administrative  Agent, but
subject to the provisions of this subsection  (c). The terms  applicable to such
account,  including  the rate of  interest  payable  with  respect to the credit
balance  of such  account  from time to time,  shall be Fleet's  standard  terms
applicable to escrow accounts  maintained with it. Any interest credited to such
account  from time to time shall be held by the  Administrative  Agent in escrow
under, and applied by the  Administrative  Agent from time to time in accordance
with the provisions of, this subsection (c).  The Administrative Agent shall, to
the fullest  extent  permitted  by  applicable  law,  apply all funds so held in
escrow from time to time to the extent  necessary to make any Advances  required
to be made by such  Defaulting  Lender  and to pay any  amount  payable  by such
Defaulting   Lender  hereunder  and  under  the  other  Loan  Documents  to  the
Administrative  Agent or any other Lender  Party,  as and when such  Advances or
amounts  are  required  to be made or paid and,  if the amount so held in escrow
shall at any time be insufficient to make and pay all such Advances and amounts
required to be made or paid at such time, in the following order of priority:


          (i) first,  to the  Administrative  Agent for any amount  then due and
     payable by such Defaulting Lender to the Administrative Agent hereunder;

          (ii) second, to the Lender Parties for any amount then due and payable
     by such  Defaulting  Lender to such Lender  Parties  hereunder,  ratably in
     accordance with such respective amounts then due and payable to such Lender
     Parties; and

          (iii) third,  to the Borrower for any Advance then required to be made
     by such  Defaulting  Lender  pursuant to a  Commitment  of such  Defaulting
     Lender.

In the event that any Lender Party that is a  Defaulting  Lender  shall,  at any
time,  cease to be a  Defaulting  Lender,  any funds held by the  Administrative
Agent in  escrow  at such  time  with  respect  to such  Lender  Party  shall be
distributed by the Administrative Agent to such Lender Party and applied by such
Lender  Party to the  Obligations  owing to such Lender Party at such time under
this  Agreement  and the other Loan  Documents  ratably in  accordance  with the
respective amounts of such Obligations outstanding at such time.

          (d) The rights and  remedies  against a  Defaulting  Lender under this
     Section 2.15 are in addition to other rights and remedies that the Borrower
     may have  against  such  Defaulting  Lender with  respect to any  Defaulted
     Advance  and that the  Administrative  Agent or any  Lender  Party may have
     against such Defaulting Lender with respect to any Defaulted Amount.


                                   ARTICLE III

                             CONDITIONS OF LENDING

     SECTION  3.01.  Conditions  Precedent to Initial  Extension of Credit.  The
obligation  of each Lender to make an Advance or of the Issuing  Bank to issue a
Letter of Credit on the occasion of the Initial Extension of Credit hereunder is
subject to the  satisfaction  of the following  conditions  precedent  before or
concurrently  with the Initial  Extension of Credit:

          (a) The  Acquisition  shall  have been  consummated  substantially  in
     accordance with the terms of the Purchase Agreement,  without any waiver or
     amendment not consented to by the Lender Parties of any term,  provision or
     condition set forth therein, and in compliance with all applicable laws and
     all   necessary   approvals;   the  Merger  shall  have  been   consummated
     substantially in accordance with the terms of the Merger Agreement, without
     any waiver or amendment not consented to by the Lender Parties of any term,
     provision or condition set forth  therein,  and the Lender Parties shall be
     satisfied  that any  applicable  state  takeover law and any  supermajority
     provisions  in the charter of Scanning are not  applicable to the Merger or
     that any conditions to avoiding such restrictions have been satisfied.


          (b) Each of the Merger  Agreement and the Purchase  Agreement shall be
     in full force and effect.

          (c)  The  Lender  Parties  shall  be  reasonably  satisfied  with  the
     corporate  and legal  structure and  capitalization  of each Loan Party and
     each  of its  Subsidiaries,  including  the  terms  and  conditions  of the
     charter, bylaws and each class of capital stock of each Loan Party and each
     such  Subsidiary  and of each  agreement  or  instrument  relating  to such
     structure or capitalization.

          (d) The Borrower  shall have  received at least  $30,000,000  in gross
     cash  proceeds  from the sale of the  Subordinated  Notes and the principal
     amount of the Seller Note shall not be in excess of $5,000,000.

          (e) The Lender  Parties  shall be satisfied  that all  Existing  Debt,
     other than the Debt identified on Schedule 3.01(e)  (the "Surviving Debt"),
     has been prepaid,  redeemed or defeased in full or otherwise  satisfied and
     extinguished  and that  all  such  Surviving  Debt  shall  be on terms  and
     conditions satisfactory to the Lender Parties.

          (f) There  shall  have  occurred  no  material  adverse  change in the
     business,  condition  (financial or  otherwise),  operations,  performance,
     properties or prospects of (i) either PSC and its Subsidiaries,  taken as a
     whole,  since December 31, 1995, or (ii) PSC Acquisition,  on an individual
     basis, or (iii) either Scanning and its  Subsidiaries  taken as a whole, or
     the Acquired Assets and Liabilities, since December 31, 1995.

          (g) Other than the  litigation  described  in  Schedule  3.01(g)  (the
     "Disclosed Litigation"),  there shall exist no action, suit, investigation,
     litigation or  proceeding  pending or threatened in any court or before any
     arbitrator or governmental or regulatory agency or authority that (i) could
     reasonably  be  expected  to (A)  have a  material  adverse  effect  on the
     business,  condition  (financial or  otherwise),  operations,  performance,
     properties or prospects of PSC and its Subsidiaries,  taken as a whole, PSC
     Acquisition,  on an  individual  basis,  the Company and its  Subsidiaries,
     taken  as  a  whole,  or  any  of  the  Acquired  Assets  and  Liabilities,
     (B) materially  adversely  affect  the  ability  of  the  Borrower  or  any
     Guarantor  to  perform  its   obligations   under  the  Loan  Documents  or
     (C) materially   adversely   affect  the  rights   and   remedies   of  the
     Administrative  Agent and the Lender  Parties  under the Loan  Documents or
     (ii) purports to materially  adversely affect any aspect of the Transaction
     or the Facilities  (collectively,  a "Material Adverse Effect");  and there
     shall have been no  material  adverse  change in the status,  or  financial
     effect on the Borrower or any of its Subsidiaries or Scanning or any of its
     Subsidiaries,  of the Disclosed  Litigation from that described on Schedule
     3.01(g).

          (h) All governmental and third party consents and approvals  necessary
     in connection with each aspect of the Purchase Agreement,  the Acquisition,
     the Merger,  the Securities  Purchase  Agreements and the Facilities  shall
     have been obtained  (without the imposition of any conditions  that are not
     acceptable  to the  Initial  Lenders)  and  shall  remain  in  effect;  all
     applicable  waiting  periods shall have expired  without any adverse action


     being taken by any competent  authority;  and no law or regulation shall be
     applicable in the reasonable judgment of the Lender Parties that restrains,
     prevents or imposes  materially  adverse  conditions upon any aspect of the
     Purchase Agreement, the Acquisition, the Merger, the Securities Purchase
     Agreements or the Facilities.

          (i)  The  Lender   Parties  shall  have   completed  a  due  diligence
     investigation  of PSC, and its Subsidiaries and Scanning in scope, and with
     results,  reasonably  satisfactory to the Lender Parties, and nothing shall
     have come to the attention of the Lender  Parties during the course of such
     due  diligence   investigation   to  lead  them  to  believe  (i) that  the
     Information   Memorandum  was  or  has  become  misleading,   incorrect  or
     incomplete in any material respect,  (ii) that,  following the consummation
     of the Acquisition,  the Borrower and its Subsidiaries  would not have good
     and  marketable   title  to  all  material   assets  of  Scanning  and  its
     Subsidiaries  reflected in the  Information  Memorandum  and (iii) that the
     Acquisition  will have a Material  Adverse  Effect;  without  limiting  the
     generality of the foregoing,  the Lender Parties shall have been given such
     access  to  the  management,  records,  books  of  account,  contracts  and
     properties  of PSC,  its  Subsidiaries  and  Scanning  as they  shall  have
     requested.

          (j) All of the  information  provided by or on behalf of PSC or any of
     its  Subsidiaries  or by or  on  behalf  of  the  Company  or  any  of  its
     Subsidiaries  to the  Administrative  Agent and the Lender Parties prior to
     their  commitment  in  respect  of  the  Facilities  (the   "Pre-Commitment
     Information")  shall be true and correct in all  material  aspects,  and no
     development  or change shall have occurred,  and no additional  information
     shall  have  come  to the  attention  of the  Administrative  Agent  or the
     Lenders, that (i) has resulted in or could reasonably be expected to result
     in a material  change in, or material  deviation  from, the  Pre-Commitment
     Information  or (ii)  has had or could  reasonably  be  expected  to have a
     Material Adverse Effect.

          (k) The Borrower  shall have paid all accrued fees and expenses of the
     Administrative Agent and the Lender Parties (including the accrued fees and
     expenses of counsel to the Administrative Agent and M&T).

          (l) The Administrative  Agent shall have received on or before the day
     of the  Initial  Extension  of Credit  the  following,  each dated such day
     (unless  otherwise  specified),  in form and substance  satisfactory to the
     Administrative  Agent  (unless  otherwise  specified)  and  (except for the
     Notes) in sufficient copies for each Lender Party:

               (i) The Notes payable to the order of the Lenders.

               (ii)  Certified  copies  of (A) the  resolutions  of the Board of
          Directors  of the  Borrower,  Scanning,  PSC and each other Loan Party
          approving the Acquisition, the Merger, this Agreement, the Notes, each
          other Loan Document and each Related  Document to which it is or is to
          be a party, and of all documents  evidencing other necessary corporate
          action and  governmental and other third party approvals and consents,
          if any, with respect to the Acquisition,  the Merger,  this Agreement,
          the Notes,  each other Loan Document and each Related Document and (B)
          the  resolution of the Board of Directors of COMIDA  approving the New
          York Mortgage.


               (iii) (A) A copy of the charter of the  Borrower,  Scanning,  the
          Company  and  each  other  Loan  Party  and  each  amendment  thereto,
          certified  (as of a date  reasonably  near  the  date  of the  Initial
          Extension of Credit) by the Secretary of State of the  jurisdiction of
          its  incorporation  as being a true and correct copy thereof and (B) a
          copy of the  organizational  documents  of COMIDA  and each  amendment
          thereto,  certified  (as of a date  reasonably  near  the  date of the
          Initial Extension of Credit) by the appropriate agency of the State of
          New York as being a true and correct copy thereof.

               (iv) A copy of a  certificate  of the  Secretary  of State of the
          jurisdiction of its incorporation,  dated within 7 days of the date of
          the Initial Extension of Credit,  listing the charter of the Borrower,
          PSC,  Scanning,  the  Company  and  each  other  Loan  Party  and each
          amendment  thereto on file in his office and certifying  that (A) such
          amendments  are  the  only  amendments  to  the   Borrower's,   PSC's,
          Scanning's  or such other Loan Party's  charter on file in his office,
          (B) the  Borrower,  PSC,  Scanning and each other Loan Party have paid
          all  franchise  taxes  to the  date of such  certificate  and  (C) the
          Borrower,   PSC,   Scanning   and  each  other  Loan  Party  are  duly
          incorporated  and in good standing  under the laws of the State of the
          jurisdiction of its incorporation.

               (v) A copy of a  certificate  of the  Secretary  of State of each
          State listed on Schedule  3.01(l)(vi),  dated reasonably near the date
          of the Initial Extension of Credit,  stating that PSC and Scanning are
          duly  qualified and in good standing as foreign  corporations  in such
          State and have filed all annual  reports  required  to be filed to the
          date of such certificate.

               (vi) Copies of a certificate of merger or other confirmation from
          the Secretary of State of the State of Delaware of the consummation of
          the Merger.

               (vii) A certificate of the Borrower, PSC, Scanning and each other
          Loan Party signed on behalf of the  Borrower,  PSC,  Scanning and such
          other  Loan  Party  by its  President  or a  Vice  President  and  its
          Secretary or any  Assistant  Secretary,  dated the date of the Initial
          Extension of Credit (the statements made in which certificate shall be
          true  on and as of the  date  of the  Initial  Extension  of  Credit),
          certifying as to (A) the  absence of any  amendments to the charter of
          the Borrower, PSC, Scanning or such other Loan Party since the date of
          the    Secretary    of   State's    certificate    referred    to   in
          Section 3.01(l)(iv),  (B) a true and correct copy of the bylaws of the
          Borrower,  PSC, Scanning and such other Loan Party as in effect on the
          date of the Initial Extension of Credit, (C) the due incorporation and
          good  standing of each of the Borrower,  PSC,  Scanning and such other
          Loan  Party  as  a  corporation   organized  under  the  laws  of  the
          jurisdiction of its  incorporation,  and the absence of any proceeding
          for the dissolution or liquidation of the Borrower,  PSC,  Scanning or


          such  other  Loan  Party,  (D) the  truth of the  representations  and
          warranties contained in the Loan Documents as though made on and as of
          the date of the Initial Extension of Credit and (E) the absence of any
          event  occurring  and  continuing,   or  resulting  from  the  Initial
          Extension of Credit, that constitutes a Default.

               (viii) A certificate  of the Secretary or an Assistant  Secretary
          of the Borrower,  PSC,  Scanning and each other Loan Party  certifying
          the names and true  signatures of the officers of the  Borrower,  PSC,
          Scanning and such other Loan Party  authorized to sign this Agreement,
          the Notes, each other Loan Document and each Related Document to which
          they are or are to be parties and the other  documents to be delivered
          hereunder and thereunder.

               (ix) A security  agreement in substantially the form of Exhibit D
          (together with each other  security  agreement  delivered  pursuant to
          Section  5.01(o),  in each case as amended,  supplemented or otherwise
          modified from time to time in accordance with its terms, the "Security
          Agreement"),  duly executed by the Borrower,  PSC and each  Subsidiary
          Guarantor, together with:

                         (A)   certificates   representing  the  Pledged  Shares
                    referred  to therein  accompanied  by undated  stock  powers
                    executed  in blank and  instruments  evidencing  the Pledged
                    Debt   referred   to   therein   indorsed   in  blank,

                         (B) acknowledgment  copies or stamped receipt copies of
                    proper financing statements, duly filed on or before the day
                    of the Initial  Extension  of Credit (or other  confirmation
                    reasonably  satisfactory to the Administrative Agent of such
                    filing)   under   the   Uniform   Commercial   Code  of  all
                    jurisdictions  that  the   Administrative   Agent  may  deem
                    necessary  or  desirable in order to perfect and protect the
                    first  priority liens and security  interests  created under
                    the Security Agreement, covering the Collateral described in
                    the Security Agreement,

                         (C)  completed  requests for  information,  dated on or
                    before the date of the Initial Extension of Credit,  listing
                    the financing statements referred to in clause (B) above and
                    all  other  effective  financing  statements  filed  in  the
                    jurisdictions  referred to in clause (B) above that name the
                    Borrower,  the  Company  or any other  Loan Party as debtor,
                    together with copies of such other financing statements,

                         (D) evidence of the completion of all other  recordings
                    and  filings of or with  respect to the  Security  Agreement
                    that  the   Administrative   Agent  may  deem  necessary  or
                    reasonably  desirable  in order to perfect  and  protect the
                    Liens created thereby,

                         (E) evidence of the insurance  required by the terms of
                    the Security Agreement,


                         (F) copies of the  Assigned  Agreements  referred to in
                    the  Security  Agreement,  together  with a consent  to such
                    assignment,  in  substantially  the form of Exhibit C to the
                    Security  Agreement,  duly  executed  by each  party to such
                    Assigned Agreements other than the Borrower, and

                         (G)   evidence   that  all   other   action   that  the
                    Administrative   Agent  may  deem  necessary  or  reasonably
                    desirable in order to perfect and protect the first priority
                    liens and  security  interests  created  under the  Security
                    Agreement has been taken.

               (x) An intellectual  property security agreement in substantially
          the form of Exhibit E (together with each other intellectual  property
          security agreement delivered pursuant to Section 5.01(o), in each case
          as amended,  supplemented  or otherwise  modified from time to time in
          accordance  with  its  terms,  the  "Intellectual   Property  Security
          Agreement"),  duly executed by the Borrower,  PSC and each  Subsidiary
          Guarantor,   together   with   evidence   that  all  action  that  the
          Administrative  Agent  may deem  necessary  or  desirable  in order to
          perfect and protect the first  priority  liens and security  interests
          created under the Intellectual  Property  Security  Agreement has been
          taken.
               (xi) (A) Deed of trust, trust deed, mortgage,  leasehold mortgage
          and leasehold deed of trust in  substantially  the form of Exhibit F-1
          and covering the properties listed on Schedule 3.01(l)(xi) and located
          in the  State of New  York  (as  amended,  supplemented  or  otherwise
          modified from time to time, the "New York Mortgage"), duly executed by
          PSC, and a deed of trust, trust deed, mortgage, leasehold mortgage and
          leasehold deed of trust in  substantially  the form of Exhibit F-2 and
          covering the properties listed on Schedule  3.10(l)(xi) and located in
          the State of Oregon (as amended,  supplemented  or otherwise  modified
          from time to time,  the "Oregon Deed of Trust"),  duly executed by the
          Borrower, together with:

                    (A) evidence that  counterparts  of the Mortgages  have been
               duly  recorded on or before the day of the Initial  Extension  of
               Credit in all filing or recording offices that the Administrative
               Agent may deem  necessary or desirable in order to create a valid
               first and subsisting  Lien on the property  described  therein in
               favor of the Secured  Parties  and that all filing and  recording
               taxes and fees have been paid,

                    (B) fully  paid  American  Land Title  Association  Lender's
               Extended   Coverage  title  insurance   policies  (the  "Mortgage
               Policies") in form and substance, with endorsements and in amount
               acceptable to the  Administrative  Agent,  issued,  coinsured and
               reinsured  by title  insurers  acceptable  to the  Administrative
               Agent,  insuring the  Mortgages to be valid first and  subsisting
               Liens on the property  described  therein,  free and clear of all
               defects   (including,   but  not  limited  to,   mechanics'   and
               materialmen's  Liens) and encumbrances,  excepting only Permitted



               Encumbrances,  and providing for such other affirmative insurance
               (including  endorsements  for  future  advances  under  the  Loan
               Documents and for  mechanics' and  materialmen's  Liens) and such
               coinsurance and direct access  reinsurance as the  Administrative
               Agent may deem necessary or desirable,

                    (C) American Land Title  Association form surveys,  dated no
               more than 30 days  before  the day of the  Initial  Extension  of
               Credit,  certified to the Administrative  Agent and the issuer of
               the Mortgage Policies in a manner reasonably  satisfactory to the
               Administrative  Agent  by a land  surveyor  duly  registered  and
               licensed in the States in which the  property  described  in such
               surveys is located and  acceptable to the  Administrative  Agent,
               showing  all  buildings  and  other  improvements,  any  off-site
               improvements,  the  location of any  easements,  parking  spaces,
               rights of way,  building  set-back  lines  and other  dimensional
               regulations  and the  absence  of  encroachments,  either by such
               improvements  or on to such property,  and other  defects,  other
               than encroachments and other defects reasonably acceptable to the
               Administrative Agent,

                    (D) such consents and  agreements of lessors and other third
               parties,  and such estoppel letters and other  confirmations,  as
               the Administrative Agent may deem necessary or desirable,

                    (E) evidence of the  insurance  required by the terms of the
               Mortgages,

                    (F) signed copies of proper financing  statements for filing
               under the Uniform  Commercial Code of all jurisdictions  that the
               Administrative  Agent may deem necessary or desirable in order to
               perfect  and  protect  the  first  priority  liens  and  security
               interests created under the Mortgages in fixtures, and

                    (G) evidence  that all other action that the  Administrative
               Agent may deem  necessary  or  desirable in order to create valid
               first  and  subsisting  Liens on the  property  described  in the
               Mortgages has been taken.


          hereafter  amended,  the "Subsidiary  Guaranty," duly executed by each
          Subsidiary Guarantor.

               (xiii)  An  assumption  agreement  in  substantially  the form of
          Exhibit H (the "Assumption Agreement"), duly executed by the Surviving
          Corporation.

               (xiv) (A) Certified copies of each of the Related  Documents,  in
          each  case  duly  executed  by the  parties  thereto  and in form  and
          substance reasonably satisfactory to the Lender Parties, together with
          all  agreements,   instruments   and  other  documents   delivered  in
          connection therewith, and a certificate of PSC to the effect that the


          aggregate   amount  of  transaction   fees  payable  pursuant  to  the
          Transaction  does not exceed the amount  previously  disclosed  in the
          Pre-Commitment  Information  and (B) certified  copies of notices (the
          "IRB  Notices"),  in form and substance  reasonably  acceptable to the
          Administrative  Agent,  of the  redemption  on  January 1, 1997 of the
          industrial revenue bonds issued pursuant to the IRB Documents.

               (xv) Such  financial,  business and other  information  regarding
          each Loan Party and its  Subsidiaries as the Lender Parties shall have
          reasonably requested, including, without limitation, information as to
          possible contingent liabilities,  tax matters,  environmental matters,
          obligations  under  Plans,  Multiemployer  Plans  and  Welfare  Plans,
          collective   bargaining   agreements  and  other   arrangements   with
          employees,  audited  annual  financial  statements  dated December 31,
          1995,  interim  financial  statements dated the end of the most recent
          fiscal  quarter for which  financial  statements are available (or, in
          the event the Lender  Parties' due diligence  review reveals  material
          changes  since such  financial  statements,  as of a later date within
          45 days of the day of the  Initial  Extension  of  Credit),  pro forma
          financial  statements  as to the  Borrower and  forecasts  prepared by
          management of PSC, in form and substance  reasonably  satisfactory  to
          the Lender Parties.

               (xvi)  Certificates,  in  substantially  the form of  Exhibit  I,
          attesting to the  Solvency of each Loan Party after  giving  effect to
          the Acquisition,  the Merger and the other  transactions  contemplated
          hereby, from its chief financial officer.

               (xvii) The  environmental  assessment  reports listed on Schedule
          3.01(l)(xvii).

               (xviii) Evidence of insurance naming the Administrative  Agent as
          insured and loss payee with such  responsible and reputable  insurance
          companies  or  associations,  and in such  amounts and  covering  such
          risks, as is reasonably satisfactory to the Lender Parties, including,
          without limitation, business interruption insurance.

               (xix)  Certified  copies of each  employment  agreement and other
          compensation arrangement with each executive officer of any Loan Party
          or any of its Subsidiaries.

               (xx)  Certified  copies of all  Material  Contracts  of each Loan
          Party and its Subsidiaries.

               (xxi) A special  warranty  deed from the Company to Scanning,  in
          form and substance satisfactory to the Administrative Agent, conveying
          to Scanning (i) all the Company's present right, title and interest in
          and to the IRB  Property and (ii) all right,  title and interest  that
          the Company may thereafter acquire in and to the IRB Property.

               (xxii) Borrowing Base Certificate.

1

               (xxiii) (A) A favorable opinion of Boylan,  Brown,  Code, Fowler,
          Vigdor & Wilson,  counsel for the Borrower,  in substantially the form
          of Exhibit J hereto and as to such other  matters as any Lender  Party
          through  the  Administrative  Agent  may  reasonably  request,  (B)  a
          favorable  opinion  of  Fried,  Frank,  Harris,  Shriver  &  Jacobson,
          intellectual  property  counsel  to the  Loan  Parties,  in  form  and
          substance reasonably  satisfactory to the Lender Parties, (C) a letter
          from Dechert Price & Rhoads,  counsel for SP Holdings and the Company,
          authorizing the Lender Parties and the Administrative Agent to rely on
          their opinion delivered  pursuant to the Purchase  Agreement and (D) a
          favorable  opinion of Gates & Adams,  counsel for COMIDA,  in form and
          substance reasonably satisfactory to the Lender Parties.

               (xxiv) A favorable  opinion of Stoel,  Rives local counsel to the
          Lender Parties in Oregon in substantially the form of Exhibit K hereto
          and  as to  such  other  matters  as  any  Lender  Party  through  the
          Administrative Agent may reasonably request.

               (xxv) A  favorable  opinion  of  Pennie &  Edmonds,  intellectual
          property counsel to the Lender Parties,  in substantially  the form of
          Exhibit L hereto  and as to such other  matters  as any  Lender  Party
          through the Administrative Agent may reasonably request.

               (xxvi) A favorable  opinion of Shearman &  Sterling,  counsel for
          the   Administrative   Agent,   in  form  and   substance   reasonably
          satisfactory to the Administrative Agent.

          (m) PSC shall have paid in full all amounts due to M&T under the terms
     of the $20,000,000  Amended and Restated Credit Facility Agreement dated as
     of September 28, 1995, provided to PSC by M&T and shall have terminated the
     commitment, and all other obligations, of M&T thereunder.

     SECTION 3.02.  Conditions  Precedent to Each  Borrowing  and Issuance.  The
obligation of each Appropriate Lender to make an Advance (other than a Letter of
Credit Advance made by the Issuing Bank or a Working  Capital Lender pursuant to
Section  2.03(c)  and a Swing  Line  Advance  made by a Working  Capital  Lender
pursuant to Section  2.02(b) on the occasion of each  Borrowing  (including  the
Initial Extension of Credit),  and the obligation of the Issuing Bank to issue a
Letter of Credit  (including the initial  issuance) or renew a Letter of Credit,
and the right of the Borrower to request a Swing Line  Borrowing or the issuance
or renewal of a Letter of Credit  shall be  subject  to the  further  conditions
precedent  that on the date of such  Borrowing  or issuance  or renewal  (a) the
following  statements  shall be true and the  Administrative  Agent  shall  have
received for the account of such Lender Party or the Issuing Bank a  certificate
signed by a duly  authorized  officer  of the  Borrower,  dated the date of such
Borrowing  or issuance or renewal,  stating  that (and each of the giving of the
applicable  Notice of  Borrowing,  Notice of Swing Line  Borrowing  or Notice of
Issuance or Notice of Renewal and the acceptance by the Borrower of the proceeds
of such  Borrowing  or of such Letter of Credit or the renewal of such Letter of
Credit shall constitute a representation  and warranty by the Borrower that both
on the date of such  notice and on the date of such  Borrowing  or  issuance  or
renewal such statements are true):



          (i) the representations and warranties contained in each Loan Document
     are correct on and as of such date,  before and after giving effect to such
     Borrowing  or issuance or renewal and to the  application  of the  proceeds
     therefrom, as though made on and as of such date;

          (ii) no event has  occurred  and is  continuing,  or would result from
     such  Borrowing  or  issuance  or  renewal or from the  application  of the
     proceeds therefrom, that constitutes a Default; and

          (iii) for each Working  Capital  Advance or Swing Line Advance made by
     the Swing Line Bank or  issuance  or  renewal of any Letter of Credit,  the
     Borrowing  Base  exceeds  the  aggregate  principal  amount of the  Working
     Capital Advances plus Swing Line Advances plus Letter of Credit Advances to
     be outstanding plus the aggregate Available Amount of all Letters of Credit
     then  outstanding  after  giving  effect to such  Advance  or  issuance  or
     renewal, respectively;

and (b) the  Administrative  Agent  shall have  received  such other  approvals,
opinions or documents as any Appropriate Lender through the Administrative Agent
may reasonably request.

     SECTION  3.03.   Determinations   Under  Section  3.01.   For  purposes  of
determining  compliance  with the  conditions  specified in  Section 3.01,  each
Lender Party shall be deemed to have consented to, approved or accepted or to be
satisfied with each document or other matter required thereunder to be consented
to or approved by or acceptable or  satisfactory to the Lender Parties unless an
officer  of  the   Administrative   Agent   responsible  for  the   transactions
contemplated  by the Loan Documents  shall have received notice from such Lender
Party prior to the Initial  Extension of Credit specifying its objection thereto
and if the Initial  Extension  of Credit  consists of a  Borrowing,  such Lender
Party  shall not have made  available  to the  Administrative  Agent such Lender
Party's ratable portion of such Borrowing.

                                   ARTICLE IV
                         REPRESENTATIONS AND WARRANTIES

     SECTION 4.01.  Representations and Warranties of PSC and the Borrower. Each
of PSC and the Borrower represents and warrants as follows:

          (a) Each Loan  Party  (i) is a  corporation  duly  organized,  validly
     existing and in good  standing  under the laws of the  jurisdiction  of its
     incorporation,  (ii) is duly  qualified  and in good  standing as a foreign
     corporation in each other  jurisdiction in which it owns or leases property
     or in which the  conduct of its  business  requires  it to so qualify or be
     licensed  except  where the failure to so qualify or be licensed  could not
     reasonably be expected to have a Material  Adverse Effect and (iii) has all
     requisite corporate power and authority (including, without limitation, all
     governmental  licenses,  permits and other  approvals)  to own or lease and
     operate its properties and to carry on its business as now conducted and as
     proposed  to be  conducted.  All of the  outstanding  capital  stock of the
     Borrower has been validly issued, is


     fully  paid and  non-assessable  and is owned by PSC free and  clear of all
     Liens, except those created under the Collateral Documents.

          (b) Set forth on Schedule  4.01(b)  hereto is a complete  and accurate
     list of all Subsidiaries of each Loan Party,  showing as of the date hereof
     (as to each such  Subsidiary) the  jurisdiction of its  incorporation,  the
     number of shares of each class of capital stock authorized,  and the number
     outstanding,  on the date  hereof  and the  percentage  of the  outstanding
     shares of each such class owned (directly or indirectly) by such Loan Party
     and the number of shares  covered  by all  outstanding  options,  warrants,
     rights of conversion or purchase and similar rights at the date hereof. All
     of the  outstanding  capital  stock  of all of such  Subsidiaries  has been
     validly issued, is fully paid and  non-assessable and is owned by such Loan
     Party  or one or more of its  Subsidiaries  free and  clear  of all  Liens,
     except those created under the Loan Documents.  Each such Subsidiary (i) is
     a corporation  duly organized,  validly existing and in good standing under
     the laws of the jurisdiction of its  incorporation,  (ii) is duly qualified
     and in good standing as a foreign corporation in each other jurisdiction in
     which it owns or leases  property or in which the  conduct of its  business
     requires  it to so qualify or be  licensed  except  where the failure to so
     qualify or be licensed  could not reasonably be expected to have a Material
     Adverse  Effect and (iii) has all requisite  corporate  power and authority
     (including,  without  limitation,  all governmental  licenses,  permits and
     other approvals) to own or lease and operate its properties and to carry on
     its business as now conducted and as proposed to be conducted.

          (c) The execution, delivery and performance by each Loan Party of this
     Agreement, the Notes, each other Loan Document and each Related Document to
     which it is or is to be a party, and the consummation of the Merger and the
     other  transactions  contemplated  hereby,  are  within  such Loan  Party's
     corporate  powers,  have been duly  authorized by all  necessary  corporate
     action,  and do not  (i) contravene  such Loan  Party's  charter or bylaws,
     (ii)violate  any  law  (including,   without  limitation,  the  Securities
     Exchange Act of 1934 and the Racketeer Influenced and Corrupt Organizations
     Chapter of the  Organized  Crime  Control  Act of 1970),  rule,  regulation
     (including,  without limitation,  Regulation X of the Board of Governors of
     the Federal Reserve System),  order, writ,  judgment,  injunction,  decree,
     determination or award,  (iii) conflict with or result in the breach of, or
     constitute  a  default  under,  any  material  contract,   loan  agreement,
     indenture, mortgage, deed of trust, lease or other instrument binding on or
     affecting  any  Loan  Party,  any of  its  Subsidiaries  or  any  of  their
     properties or (iv) except  for the Liens created under the Loan  Documents,
     result in or require the  creation or  imposition  of any Lien upon or with
     respect  to  any  of  the  properties  of  any  Loan  Party  or  any of its
     Subsidiaries.  No Loan Party or any of its  Subsidiaries is in violation of
     any such law, rule, regulation, order, writ, judgment,  injunction, decree,
     determination  or award or in breach of any such contract,  loan agreement,
     indenture,  mortgage,  deed  of  trust,  lease  or  other  instrument,  the
     violation  or  breach  of which  could  reasonably  be  expected  to have a
     Material Adverse Effect.

          (d) No  authorization or approval or other action by, and no notice to
     or filing with, any governmental  authority or regulatory body or any other
     third party is required for (i) the due execution,  delivery,  recordation,



     filing or performance by any Loan Party of this Agreement,  the Notes,  any
     other Loan  Document or any  Related  Document to which it is or is to be a
     party, or for the consummation of the Acquisition,  the Merger or the other
     transactions  contemplated  hereby, (ii) the grant by any Loan Party of the
     Liens  granted  by it  pursuant  to the  Collateral  Documents,  (iii)  the
     perfection or maintenance of the Liens created by the Collateral  Documents
     (including the first priority  nature  thereof) or (iv)the  exercise by the
     Administrative  Agent or any  Lender  Party of its  rights  under  the Loan
     Documents  or the  remedies  in respect of the  Collateral  pursuant to the
     Collateral Documents,  except for the authorizations,  approvals,  actions,
     notices and filings listed on Schedule 4.01(d), all of which have been duly
     obtained,  taken,  given  or made and are in full  force  and  effect.  All
     applicable  waiting periods in connection with the Acquisition,  the Merger
     and the other  transactions  contemplated  hereby have expired  without any
     action having been taken by any competent authority restraining, preventing
     or imposing materially adverse conditions upon the Acquisition,  the Merger
     or the rights of the Loan Parties or their Subsidiaries  freely to transfer
     or otherwise dispose of, or to create any Lien on, any properties now owned
     or hereafter acquired by any of them.

          (e) This  Agreement has been,  and each of the Notes,  each other Loan
     Document and each Related Document when delivered hereunder will have been,
     duly executed and delivered by each Loan Party thereto.  This Agreement is,
     and each of the Notes,  each other Loan Document and each Related  Document
     when delivered  hereunder will be, the legal,  valid and binding obligation
     of each  Loan  Party  thereto,  enforceable  against  such  Loan  Party  in
     accordance with its terms.

          (f) (i) The  Consolidated  and  consolidating  balance  sheets  of the
     Company and its  Subsidiaries  as at  December  31,  1995,  and the related
     Consolidated  and  consolidating  statements  of  income  and  Consolidated
     statement of cash flows of the Company and its  Subsidiaries for the fiscal
     year then ended, accompanied by (in the case of such consolidated financial
     statements)   an  opinion  of   Coopers  &  Lybrand,   independent   public
     accountants,  and the  Consolidated  balance  sheet of the  Company and its
     Subsidiaries as at March 31, 1996, and the related  Consolidated  statement
     of income and  Consolidated  statement of cash flows of the Company and its
     Subsidiaries  for the three months then ended,  duly certified by the chief
     executive officer or the chief financial officer of the Company,  copies of
     which have been furnished to each Lender Party, fairly present, subject, in
     the case of said balance sheet as at March 31, 1996, and said statements of
     income and cash flows for the three  months then ended,  to year-end  audit
     adjustments,  the  Consolidated  (and,  with respect to the balance  sheets
     dated December 31, 1995,  consolidating) financial condition of the Company
     and its  Subsidiaries  as at such  dates and the  Consolidated  (and,  with
     respect to the statements of income dated December 31, 1995, consolidating)
     results of the  operations  of the  Company  and its  Subsidiaries  for the
     period  ended on such  date,  all in  accordance  with  generally  accepted
     accounting principles applied on a consistent basis, and since December 31,
     1995, there has been no Material Adverse Change.

          (ii) The Consolidated and consolidating  balance sheets of PSC and its
     Subsidiaries  as at  December 31,  1995, and the related  Consolidated  and
     consolidating statements of income and Consolidated statement of cash flows



     of PSC and its Subsidiaries for the fiscal year then ended,  accompanied by
     (in the case such Consolidated  financial  statements) an opinion of Arthur
     Anderson,  independent  public  accountants,  and the Consolidated  balance
     sheet of PSC and its  Subsidiaries  as at March 31,  1996,  and the related
     Consolidated  statement of income and Consolidated  statement of cash flows
     of PSC and its Subsidiaries for the three months then ended, duly certified
     by the chief financial  officer of PSC, copies of which have been furnished
     to each Lender Party, fairly present,  subject, in the case of said balance
     sheets as at March 31, 1996,  and said  statements of income and cash flows
     for the three  months  then  ended,  to  year-end  audit  adjustments,  the
     Consolidated  (and,  with respect to the balance  sheets dated December 31,
     1995,  consolidating) financial condition of PSC and its Subsidiaries as at
     such dates and the  Consolidated  (and,  with respect to the  statements of
     income dated December 31, 1995, consolidating) results of the operations of
     PSC and its  Subsidiaries  for  the  period  ended  on  such  date,  all in
     accordance  with  generally  accepted  accounting  principles  applied on a
     consistent  basis,  and since December 31, 1995, there has been no Material
     Adverse Change.


          (g)  The   Consolidated  pro  forma  balance  sheet  of  PSC  and  its
     Subsidiaries as at March 31, 1996, and the related  Consolidated  pro forma
     statement  of income  and cash  flows of PSC and its  Subsidiaries  for the
     three months then ended,  certified by the chief financial  officer of PSC,
     copies of which have been  furnished to each Lender Party,  fairly  present
     the Consolidated  pro forma financial condition of PSC and its Subsidiaries
     as at such date and the Consolidated pro forma results of operations of PSC
     and its Subsidiaries for the period ended on such date, in each case giving
     effect to the Acquisition and the other transactions  contemplated  hereby,
     all in accordance with GAAP.

          (h) The Consolidated  forecasted balance sheets, income statements and
     cash flows statements of PSC and its  Subsidiaries  delivered to the Lender
     Parties pursuant to Section 3.01(l)(xv) or 5.03 were prepared in good faith
     on the basis of the assumptions stated therein, which assumptions were fair
     in the  light  of  conditions  existing  at the  time of  delivery  of such
     forecasts, and represented, at the time of delivery, PSC's best estimate of
     its future financial performance.

          (i)  Neither the  Information  Memorandum  nor any other  information,
     exhibit or report furnished by any Loan Party to the  Administrative  Agent
     or any  Lender  Party  in  connection  with  the  negotiation  of the  Loan
     Documents  or pursuant  to the terms of the Loan  Documents  contained  any
     untrue  statement  of a material  fact or omitted to state a material  fact
     necessary to make the statements made therein not misleading.

          (j) Other than the  Disclosed  Litigation,  there is no action,  suit,
     investigation,  litigation or proceeding affecting any Loan Party or any of
     its Subsidiaries, including any Environmental Action, pending or threatened
     before any court,  governmental  agency or arbitrator that could reasonably
     be  expected  to have a  Material  Adverse  Effect,  and  there has been no
     material  adverse  change in the status,  or  financial  effect on any Loan
     Party or any of its  Subsidiaries,  of the Disclosed  Litigation  from that
     described on Schedule 3.01(g).



          (k) No proceeds of any Advance or drawings  under any Letter of Credit
     will be used to acquire any equity  security of a class that is  registered
     pursuant to Section 12 of the Securities Exchange Act of 1934.

          (l) Each of PSC and the  Borrower  is not  engaged in the  business of
     extending  credit for the purpose of purchasing  or carrying  Margin Stock,
     and no proceeds of any Advance or drawings  under any Letter of Credit will
     be used to purchase or carry any Margin Stock or to extend credit to others
     for the purpose of purchasing or carrying any Margin Stock.

          (m) Following  application  of the proceeds of each Advance or drawing
     under each  Letter of Credit,  not more than 25 percent of the value of the
     assets (either of PSC only or of PSC and its Subsidiaries on a Consolidated
     basis) subject to the provisions of  Section 5.02(a)  or 5.02(e) or subject
     to any restriction contained in any agreement or instrument between PSC and
     any Lender Party or any Affiliate of any Lender Party  relating to Debt and
     within the scope of Section 6.01(e) will be Margin Stock.

          (n)  None  of PSC,  the  Borrower  or any of  their  ERISA  Affiliates
     maintains any Plans or  Multiemployer  Plans. Set forth on Schedule 4.01(n)
     is a complete and accurate list of all Welfare Plans.

          (o) Except as set forth in the  financial  statements  referred  to in
     this  Section  4.01  and in  Section  5.03,  the  Loan  Parties  and  their
     respective   Subsidiaries  have  no  material  liability  with  respect  to
     "expected  post  retirement  benefit  obligations"  within  the  meaning of
     Statement of Financial Accounting Standards No. 106.

          (p) Neither the business nor the  properties  of any Loan Party or any
     of its Subsidiaries are affected by any fire, explosion,  accident, strike,
     lockout or other labor dispute, drought, storm, hail, earthquake,  embargo,
     act of God or of the public enemy or other casualty (whether or not covered
     by insurance) that could  reasonably be expected to have a Material Adverse
     Effect.

          (q) The  operations  and properties of each Loan Party and each of its
     Subsidiaries  comply in all known  material  respects  with all  applicable
     Environmental Laws and Environmental Permits, all known past non-compliance
     with such  Environmental  Laws and Environmental  Permits has been resolved
     without ongoing obligations or costs, and no circumstances exist that could
     reasonably  be  expected to (i) form the basis of an  Environmental  Action
     against  any  Loan  Party  or  any  of its  Subsidiaries  or  any of  their
     properties  that could  reasonably  be expected to have a Material  Adverse
     Effect or (ii) cause any such property to be subject to any restrictions on
     ownership, occupancy, use or transferability under any Environmental Law.

          (r) Except as disclosed in the environmental assessment reports listed
     on Schedule  3.01(l)(xvii),  none of the  properties  currently or formerly
     owned or operated by any Loan Party or any of its Subsidiaries is listed or
     proposed for listing on the NPL or on the CERCLIS or any analogous foreign,



     state or local list or is adjacent to any such property;  there are no and,
     to  the  best  of  its  knowledge,  never  have  been  any  underground  or
     aboveground storage tanks or any surface impoundments,  septic tanks, pits,
     sumps or lagoons in which Hazardous  Materials are being or, to the best of
     its  knowledge,  have been  treated,  stored or  disposed  on any  property
     currently  owned or operated  by any Loan Party or any of its  Subsidiaries
     or,  to the  best of its  knowledge,  on any  property  formerly  owned  or
     operated by any Loan Party or any of its Subsidiaries; there is no asbestos
     or asbestos-containing material on any property currently owned or operated
     by any Loan Party or any of its Subsidiaries;  and Hazardous Materials have
     not been  released,  discharged  or disposed of on any  property  currently
     owned or  operated  by any Loan  Party  or any of its  Subsidiaries  or any
     property formerly owned or operated by any Loan Party (other than Scanning)
     or any of its  Subsidiaries or any property,  to the best of its knowledge,
     any  property  formerly  owned  or  operated  by  Scanning  or  any  of its
     Subsidiaries.

          (s) Neither any Loan Party nor any of its Subsidiaries is undertaking,
     and  has  not  completed,   either  individually  or  together  with  other
     potentially   responsible  parties,  any  investigation  or  assessment  or
     remedial or response action  relating to any actual or threatened  release,
     discharge  or  disposal of  Hazardous  Materials  at any site,  location or
     operation,  either voluntarily or pursuant to the order of any governmental
     or regulatory  authority or the requirements of any Environmental  Law; and
     all Hazardous Materials generated,  used, treated, handled or stored at, or
     transported  to or from,  any property  currently  owned or operated by any
     Loan Party or any of its  Subsidiaries  or any property  formerly  owned or
     operated by any Loan Party (other than Scanning) or any of its Subsidiaries
     or, to the best of its knowledge,  any property  formerly owned or operated
     by Scanning or any of its  Subsidiaries  have been  disposed of in a manner
     not reasonably  expected to result in material  liability to any Loan Party
     or any of its Subsidiaries.

          (t) Neither any Loan Party nor any of its  Subsidiaries  is a party to
     any indenture,  loan or credit agreement or any lease or other agreement or
     instrument  or subject to any charter or corporate  restriction  that could
     reasonably be expected to have a Material Adverse Effect.

          (u) The  Collateral  Documents  create  a valid  and  perfected  first
     priority security  interest in the Collateral,  securing the payment of the
     Secured  Obligations,  and all  filings  and  other  actions  necessary  or
     reasonably  desirable to perfect and protect such  security  interest  have
     been duly taken.  The Loan Parties are the legal and  beneficial  owners of
     the  Collateral  free and  clear of any  Lien,  except  for the  liens  and
     security interests created or permitted under the Loan Documents.

          (v) Each Loan Party and each of its Subsidiaries has filed, has caused
     to be filed or has been included in all tax returns (Federal,  state, local
     and foreign)  required to be filed and has paid all taxes shown  thereon to
     be due, together with applicable interest and penalties.


          (w) Set forth on Schedule  4.01(w)  hereto is a complete  and accurate
     list,  as of the date  hereof,  of each taxable year of each Loan Party and
     each of its  Subsidiaries  for which  Federal  income tax returns have been
     filed and for which the expiration of the applicable statute of limitations
     for  assessment  or  collection  has not occurred by reason of extension or
     otherwise (an "Open Year").

          (x) There is no unpaid amount,  as of the date hereof,  of adjustments
     to the  Federal  income  tax  liability  of each Loan Party and each of its
     Subsidiaries  proposed by the Internal Revenue Service with respect to Open
     Years.  No issues  have been  raised by the  Internal  Revenue  Service  in
     respect of Open Years that, in the aggregate,  could reasonably be expected
     to have a Material Adverse Effect.

          (y) There is no unpaid amount,  as of the date hereof,  of adjustments
     to the state,  local and foreign tax  liability  of each Loan Party and its
     Subsidiaries  proposed by all state,  local and foreign taxing  authorities
     (other  than  amounts  arising  from  adjustments  to  Federal  income  tax
     returns).  No issues have been raised by such taxing  authorities  that, in
     the  aggregate,  could  reasonably  be expected to have a Material  Adverse
     Effect.

          (z) The  Merger  will  not be  taxable  to the  Company  or any of its
     Subsidiaries or Affiliates.

          (aa) No  "ownership  change"  as  defined  in  Section  382(g)  of the
     Internal Revenue Code, and no event that would result in the application of
     the "separate return  limitation  year" or  "consolidated  return change of
     ownership"  limitations  under the Federal income tax  consolidated  return
     regulations, has occurred with respect to PSC.

          (bb)  Neither  any  Loan  Party  nor  any  of its  Subsidiaries  is an
     "investment  company,"  or an  "affiliated  person"  of, or  "promoter"  or
     "principal  underwriter"  for, an  "investment  company," as such terms are
     defined in the  Investment  Company Act of 1940,  as  amended.  Neither the
     making of any Advances,  nor the issuance of any Letters of Credit, nor the
     application of the proceeds or repayment  thereof by the Borrower,  nor the
     consummation of the other transactions  contemplated  hereby,  will violate
     any  provision  of  such  Act or  any  rule,  regulation  or  order  of the
     Securities and Exchange Commission thereunder.

          (cc)  Each  Loan  Party  is,   individually   and  together  with  its
     Subsidiaries, Solvent.

          (dd) Set forth on Schedule 4.01(dd)  hereto is a complete and accurate
     list of all Existing Debt (other than  Surviving  Debt),  showing as of the
     date hereof the principal amount outstanding thereunder.

          (ee) Set forth on Schedule  4.01(ee) hereto is a complete and accurate
     list of all  Surviving  Debt,  showing as of the date hereof the  principal
     amount   outstanding   thereunder,   the  maturity  date  thereof  and  the
     amortization schedule therefor.

          (ff) Set forth on Schedule 4.01 (ff) hereto is a complete and accurate
     list  of  all  real  property  owned  by  any  Loan  Party  or  any  of its


     Subsidiaries  or in which any Loan  Party  has an  interest  as a  contract
     vendee,  showing as of the date hereof the street address,  county or other
     relevant  jurisdiction,  state,  record owner and book and  estimated  fair
     value thereof.  Each Loan Party or such Subsidiary has good, marketable and
     insurable  fee simple  title to such real  property,  free and clear of all
     Liens, other than Liens created or permitted by the Loan Documents.

          (gg) Set forth on Schedule 4.01(gg)  hereto is a complete and accurate
     list of all leases of real  property  under  which any Loan Party or any of
     its  Subsidiaries  is the lessee,  showing as of the date hereof the street
     address,  county or other relevant  jurisdiction,  state,  lessor,  lessee,
     expiration  date and annual rental cost thereof.  To the best  knowledge of
     each Loan Party, each such lease is the legal, valid and binding obligation
     of the lessor thereof, enforceable in accordance with its terms.

          (hh) Set forth on Schedule 4.01(hh)  hereto is a complete and accurate
     list of all  Material  Contracts  of each Loan Party and its  Subsidiaries,
     showing as of the date hereof the parties, subject matter and term thereof.
     Except as could not  reasonably  be  expected  to have a  Material  Adverse
     Effect, each such Material Contract has been duly authorized,  executed and
     delivered  by all  parties  thereto,  has not  been  amended  or  otherwise
     modified,  is in full force and effect and is binding upon and  enforceable
     against all parties thereto in accordance  with its terms.  There exists no
     default under any Material Contract by PSC or any of its Subsidiaries party
     thereto  and to the best  knowledge  of each Loan  Party,  there  exists no
     default under any Material Contract by any other party thereto.

          (ii) Set forth on Schedule 4.01(ii)  hereto is a complete and accurate
     list of all Investments held by any Loan Party or any of its  Subsidiaries,
     showing as of the date hereof the amount,  obligor or issuer and  maturity,
     if any, thereof.

          (jj) Set forth on Schedule  4.01(jj) hereto is a complete and accurate
     list of all patents, trademarks, trade names, service marks and copyrights,
     and all applications  therefor and licenses thereof,  of each Loan Party or
     any of its Subsidiaries,  showing as of the date hereof the jurisdiction in
     which registered, the registration number, the date of registration and the
     expiration date.


                                    ARTICLE V

                        COVENANTS OF PSC AND THE BORROWER

     SECTION 5.01.  Affirmative  Covenants.  So long as any Advance shall remain
unpaid, any Letter of Credit shall be outstanding or any Lender Party shall have
any Commitment hereunder, each of PSC and the Borrower will: 

     (a) Compliance with Laws, Etc.  Comply,  and cause each of its Subsidiaries
to  comply,  in  all  material  respects,   with  all  applicable  laws,  rules,
regulations  and  orders,  such  compliance  to  include,   without  limitation,
compliance with ERISA and Environmental Laws.



     (b)  Payment  of Taxes,  Etc.  Pay and  discharge,  and  cause  each of its
Subsidiaries  to pay and  discharge,  before the same shall  become  delinquent,
(i) all taxes, assessments and governmental charges or levies imposed upon it or
upon its property  and (ii) all  lawful  claims  that,  if unpaid,  might by law
become a Lien  upon its  property;  provided,  however,  that  each of PSC,  the
Borrower  and their  respective  Subsidiaries  shall not be  required  to pay or
discharge any such tax,  assessment,  charge or claim that is being contested in
good faith and by proper  proceedings and as to which  appropriate  reserves are
being maintained,  unless and until any Lien resulting therefrom attaches to its
property and becomes enforceable against its other creditors.

     (c)  Compliance  with  Environmental  Laws.  Comply,  and cause each of its
Subsidiaries  and all lessees  and other  Persons  operating  or  occupying  its
properties  to  comply,   in  all  material   respects,   with  all   applicable
Environmental Laws and Environmental Permits; obtain and renew and cause each of
its  Subsidiaries  to  obtain  and renew all  Environmental  Permits  reasonably
necessary for its operations and properties;  and conduct, and cause each of its
Subsidiaries to conduct,  any investigation,  study,  sampling and testing,  and
undertake any cleanup, removal, remedial or other action necessary to remove and
clean up all Hazardous Materials from any of its properties,  in accordance with
the requirements of all Environmental Laws; provided, however, that each of PSC,
the  Borrower  and  their  respective  Subsidiaries  shall  not be  required  to
undertake any such cleanup, removal, remedial or other action to the extent that
its  obligation  to do so is  being  contested  in  good  faith  and  by  proper
proceedings and appropriate  reserves are being  maintained with respect to such
circumstances.

     (d) Maintenance of Insurance.  Maintain, and cause each of its Subsidiaries
to maintain,  insurance with  responsible and reputable  insurance  companies or
associations  in such amounts and covering  such risks as is usually  carried by
companies  engaged in similar  businesses and owning  similar  properties in the
same general areas in which PSC, the Borrower or such Subsidiary operates.

     (e) Preservation of Corporate  Existence,  Etc. Preserve and maintain,  and
cause each of its  Subsidiaries to preserve and maintain,  its existence,  legal
structure,  legal name,  rights  (charter  and  statutory),  permits,  licenses,
approvals,  privileges and franchises;  provided, however, that the Borrower and
its Subsidiaries may consummate the Merger and any other merger or consolidation
permitted  under  Section 5.02(d)  and  provided  further  that none of PSC, the
Borrower or any of their respective  Subsidiaries  shall be required to preserve
any right,  permit,  license,  approval,  privilege or franchise if the Board of
Directors of PSC,  the  Borrower or such  Subsidiary  shall  determine  that the
preservation  thereof is no longer  desirable  in the conduct of the business of
PSC,  the  Borrower  or such  Subsidiary,  as the case may be, and that the loss
thereof is not  disadvantageous  in any material  respect to PSC, the  Borrower,
such Subsidiary or the Lender Parties.


     (f) Visitation  Rights.  (i) At any reasonable time and from time to time,
upon reasonable  notice,  permit the  Administrative  Agent or any of the Lender
Parties or any agents or representatives  thereof, to examine and make copies of
and abstracts from the records and books of account of, and visit the properties
of, PSC,  the  Borrower and their  respective  Subsidiaries,  and to discuss the
affairs,  finances and accounts of PSC, the Borrower and any of their respective
Subsidiaries with any of their officers or directors.

     (ii)  In the  case of PSC,  meet at  least  one  each  calendar  year  with
representatives  of the  Administrative  Agent and the Lender Parties to discuss
the  affairs,  finances  and  accounts  of PSC,  the  Borrower  and any of their
respective Subsidiaries.

     (iii)  Permit the  Administrative  Agent and the Lenders to conduct no more
than one commercial finance  examination of PSC and its Subsidiaries during each
calendar year.

     (g) Preparation of Environmental  Reports. At the reasonable request of the
Administrative  Agent made upon reasonable cause, from time to time,  provide to
the Lender  Parties  within 60 days after such  request,  at the  expense of the
Borrower,  an  environmental  site  assessment  report  for  any  of  its or its
Subsidiaries properties described in such request,  prepared by an environmental
consulting firm acceptable to the Required  Lenders,  indicating the presence or
absence of Hazardous Materials and the estimated cost of any compliance, removal
or  remedial  action  in  connection  with  any  Hazardous   Materials  on  such
properties;  without  limiting the generality of the foregoing,  if the Required
Lenders  determines at any time that a material risk exists that any such report
will not be provided within the time referred to above, the Required Lenders may
retain an environmental consulting firm to prepare such report at the expense of
the Borrower, and each of PSC and the Borrower hereby grants and agrees to cause
any of its  Subsidiaries  that owns any  property  described  in such request to
grant at the time of such  request,  to the  Administrative  Agent,  the  Lender
Parties,  such firm and any agents or  representatives  thereof  an  irrevocable
non-exclusive  license,  subject to the rights of  tenants,  to enter onto their
respective properties to undertake such an assessment.

     (h) Keeping of Books.  Keep,  and cause each of its  Subsidiaries  to keep,
proper books of record and account,  in which full and correct  entries shall be
made of all  financial  transactions  and the assets and  business  of PSC,  the
Borrower  and  each  such  Subsidiary  in  accordance  with  generally  accepted
accounting principles in effect from time to time.

     (i) Maintenance of Properties,  Etc. Maintain and preserve,  and cause each
of its  Subsidiaries  to maintain and preserve,  all of its properties  that are
reasonably  necessary in the conduct of its  business in good working  order and
condition, ordinary wear and tear excepted.

     (j) Compliance  with Terms of  Leaseholds.  Make all payments and otherwise
perform all  obligations in respect of all leases of real property to which PSC,
the  Borrower  or any of their  respective  Subsidiaries  is a party,  keep such
leases  in full  force  and  effect  and not  allow  such  leases to lapse or be
terminated  or any rights to renew such  leases to be  forfeited  or  cancelled,
notify the Administrative Agent of any default by any party with respect to such
leases and cooperate with the  Administrative  Agent in all respects to cure any
such default,  and cause each of its Subsidiaries to do so except,  in any case,
where the failure to do so, either  individually or in the aggregate,  could not
reasonably be expected to have a Material Adverse Effect.


     (k) Performance of Related Documents.  Perform and observe all of the terms
and  provisions  of each  Related  Document to be  performed  or observed by it,
maintain  each such  Related  Document  in full force and effect,  enforce  such
Related Document in accordance with its terms,  take all such action to such end
as may be from time to time  requested  by the  Administrative  Agent and,  upon
request  of the  Administrative  Agent,  make to each  other  party to each such
Related  Document such demands and requests for  information  and reports or for
action as the Borrower is entitled to make under such Related Document.

     (l)  Performance of Material  Contracts.  Perform and observe all the terms
and  provisions  of each  Material  Contract to be  performed or observed by it,
maintain each such Material Contract in full force and effect,  and enforce each
such Material Contract in accordance with its terms.

     (m)  Transactions  with  Affiliates.   Conduct,   and  cause  each  of  its
Subsidiaries to conduct,  all  transactions  otherwise  permitted under the Loan
Documents with any of their Affiliates on terms that are fair and reasonable and
no less favorable to PSC, the Borrower or such  Subsidiary  than it would obtain
in a comparable arm's-length transaction with a Person not an Affiliate.

     (n) Cash  Concentration  Accounts.  In the case of PSC,  maintain main cash
concentration accounts with one or more of the Lenders.

     (o) Further  Assurances.  (i) Upon the request of the Administrative  Agent
following the  occurrence and during the  continuance  of a Default,  and at the
expense of the Borrower,  (A) within 10 days after such request,  furnish to the
Administrative  Agent a description of the real and personal  properties of PSC,
the Borrower and their  respective  Subsidiaries  in detail  satisfactory to the
Administrative  Agent,  (B) within 15 days after such request,  duly execute and
deliver to the Administrative  Agent mortgages,  pledges,  assignments and other
security agreements,  as specified by and in form and substance  satisfactory to
the  Administrative  Agent,  securing payment of all the Obligations of the Loan
Parties under the Loan Documents and constituting  Liens on all such properties,
(C) within 30 days after such request, take whatever action (including,  without
limitation,  the recording of mortgages,  the filing of Uniform  Commercial Code
financing  statements,  the giving of notices and the  endorsement of notices on
title  documents) as may be necessary or reasonably  advisable in the opinion of
the  Administrative  Agent  to  vest  in  the  Administrative  Agent  (or in any
representative  of  the  Administrative   Agent  designated  by  it)  valid  and
subsisting  Liens on the  properties  purported  to be subject  to the  security
agreements  delivered pursuant to this Section 5.01(o),  enforceable against all
third  parties in  accordance  with their  terms,  (D) within 60 days after such
request,  deliver  to the  Administrative  Agent a  signed  copy of a  favorable
opinion,  addressed to the Administrative Agent, of counsel for the Loan Parties
reasonably acceptable to the Administrative Agent as to the matters contained in
clauses (A),  (B) and (C) above,  as to such  security  agreements  being legal,
valid and binding obligations of the Loan Parties enforceable in accordance with
their  terms  and as to such  other  matters  as the  Administrative  Agent  may
reasonably request,  (E) as promptly as practicable after such request,  deliver
to the Administrative Agent surveys meeting the criteria specified in Section



3.01(l)(xi)(C)  and Mortgage Policies as to each parcel of real property subject
to such request, and (F) at any time and from time to time, promptly execute and
deliver any and all further  instruments  and  documents and take all such other
action as the  Administrative  Agent may deem  desirable in  obtaining  the full
benefits of, or in preserving the Liens of, such security agreements.

     (ii) Upon the  reasonable  request of the  Administrative  Agent and at the
expense  of the  Borrower,  within 30 days after  such  request,  furnish to the
Administrative  Agent an  appraisal of each of the  properties  described in the
Mortgages complying with the requirements of the Federal Financial Institutions,
Reform,  Recovery and Enforcement Act of 1989,  which appraisals shall be from a
person  acceptable  to the Lender  Parties and  otherwise  inform and  substance
satisfactory to the Lender parties.

     (iii) Upon the reasonable (in light of the  circumstances  existing at such
time) request of the  Administrative  Agent, and at the expense of the Borrower,
within  30  days  a  such   request,   (x)  duly  execute  and  deliver  to  the
Administrative  Agent pledges,  assignments  and other security  agreements,  as
specified by and in form and substance satisfactory to the Administrative Agent,
constituting  Liens on the shares of  capital  stock of any  Foreign  Subsidiary
under the laws of the jurisdiction of such Foreign  Subsidiary's  incorporation,
(y) take whatever further action as may be necessary or reasonably  advisable in
the opinion of the Administrative  Agent to vest in the Administrative Agent (or
any  representative  of the  Administrative  Agent  designated  by it) valid and
subsisting  Liens  on such  shares  of  capital  stock  and (z)  deliver  to the
Administrative  Agent a signed copy of a  favorable  opinion,  addressed  to the
Administrative  Agent,  of counsel  for the Loan  Parties  in such  jurisdiction
reasonably acceptable to the Administrative Agent as to the matters contained in
clauses (x) and (y) above, as to such security agreements being legal, valid and
binding  obligations of the Loan Parties  enforceable  in accordance  with their
terms and as to such other matters as the  Administrative  Agent may  reasonably
request.

     (p) Interest Rate Hedging. In the case of the Borrower, enter into prior to
September 30, 1996,  and maintain at all times  thereafter,  interest rate Hedge
Agreements with Persons  acceptable to the  Administrative  Agent,  covering (i)
prior to June 30,  1998 a  notional  amount of not less than 50% of the  initial
Borrowings  hereunder and  (ii) subsequent to June 30, 1998 a notional amount of
not less than 25% of the Advances  outstanding on June 30, 1998 under all of the
Facilities.  For  purposes of  calculating  the  aggregate  principal  amount of
Advances  outstanding  on June 30, 1998, the Working  Capital  Advances shall be
deemed to be outstanding in an aggregate  principal  amount equal to the average
principal amount of Working Capital Advances  outstanding  during the two fiscal
quarters ended on June 30, 1998.

     (q)  Termination  of  Financing   Statements.   Upon  the  request  of  the
Administrative  Agent, and at the expense of the Borrower,  within 10 days after
such request,  furnish to the Administrative Agent proper termination statements
on Form UCC-3 covering such financing statements as the Administrative Agent may
reasonably  request that were listed in the completed  requests for  information
referred to in Section 3.01(l)(ix)(C).


     (r) IRB Notices.  In the case of PSC,  cause the Company to deliver the IRB
Notices to the  appropriate  parties  under the IRB Documents on the date of the
Initial Extension of Credit.

     (s) IRB Mortgage.  In the case of PSC, (i) use its best efforts to seek all
necessary consents from the Bond Trustee or any other Person, which consents are
necessary to permit the  Administrative  Agent to place a Lien on the Borrower's
interest as contract  vendee  under the IRB  Documents  and (ii)  promptly  upon
receipt of all such consents execute and deliver to the  Administrative  Agent a
mortgage,  in form  and  substance  satisfactory  to the  Administrative  Agent,
together  with  fixture   filings   satisfying  the   requirements   of  Section
3.01(l)(xi)(f),  granting to the Administrative Agent a first-priority  security
interest  in such  contract  vendee's  interest  subject  only to the  Permitted
Encumbrances described in the Oregon Deed of Trust.

     (t) Foreign Subsidiaries. In the case of PSC, within 25 Business Days after
the date hereof,  deliver  evidence in form and  substance  satisfactory  to the
Administrative  Agent of the pledge to the Administrative  Agent for its benefit
and the  benefit of the Secured  Parties,  in  accordance  with the terms of the
Security  Agreement,  of the capital stock of PSC Asia Pacific Pty Limited,  PSC
S.A.R.L.,   TxCom,  PSC  Srl,  Photographic  Sciences  GmbH  and  Foreign  Sales
Corporation.

     SECTION  5.02.  Negative  Covenants.  So long as any Advance  shall  remain
unpaid, any Letter of Credit shall be outstanding or any Lender Party shall have
any Commitment  hereunder,  PSC and the Borrower will not, at any time,  without
the consent of the Required Lenders:

          (a) Liens,  Etc. Create,  incur,  assume or suffer to exist, or permit
     any of its  Subsidiaries to create,  incur,  assume or suffer to exist, any
     Lien  on or  with  respect  to  any  of its  properties  of  any  character
     (including,  without  limitation,  accounts) whether now owned or hereafter
     acquired,  or sign or  file  or  suffer  to  exist,  or  permit  any of its
     Subsidiaries  to sign or  file  or  suffer  to  exist,  under  the  Uniform
     Commercial Code of any jurisdiction,  a financing  statement that names PSC
     or the Borrower or any of their respective  Subsidiaries as debtor, or sign
     or suffer to exist, or permit any of its  Subsidiaries to sign or suffer to
     exist, any security  agreement  authorizing any secured party thereunder to
     file such financing statement, or assign, or permit any of its Subsidiaries
     to  assign,  any  accounts  or other  right to receive  income,  excluding,
     however, from the operation of the foregoing restrictions the following:

                  (i)   Liens created under the Loan Documents;

                  (ii)  Permitted Liens;

                  (iii) Liens existing on the date hereof and described on
                        Schedule 5.02(a)(iii) hereto;

                  (iv)  purchase money Liens upon or in real property or 
                        equipment acquired or held by PSC, the Borrower or 
                        any of their respective Subsidiaries in the ordinary



          course of business to secure the  purchase  price of such  property or
          equipment  or to  secure  Debt  incurred  solely  for the  purpose  of
          financing the  acquisition,  construction  or  improvement of any such
          property or equipment to be subject to such Liens,  or Liens  existing
          on any such  property or equipment at the time of  acquisition  (other
          than any such Liens created in  contemplation of such acquisition that
          do  not  secure  the  purchase  price),  or  extensions,  renewals  or
          replacements  of any of the foregoing for the same or a lesser amount;
          provided,  however,  that no such  Lien  shall  extend to or cover any
          property  other  than  the  property  or  equipment   being  acquired,
          constructed or improved, and no such extension, renewal or replacement
          shall extend to or cover any property not  theretofore  subject to the
          Lien being extended,  renewed or replaced;  and provided  further that
          the aggregate  principal amount of the Debt secured by Liens permitted
          by this  clause  (iv)  shall not exceed  the  amount  permitted  under
          Section 5.02(b)(iii)(B) at any time outstanding and that any such Debt
          shall not otherwise be prohibited by the terms of the Loan Documents;

               (v) Liens arising in connection with Capitalized Leases permitted
          under Section 5.02(b)(iii)(C); provided that no such Lien shall extend
          to or cover any  Collateral or assets other than the assets subject to
          such Capitalized Leases;

               (vi)  other  Liens  securing  Debt  outstanding  in an  aggregate
          principal amount not to exceed $3,000,000,  provided that no such Lien
          shall extend to or cover any Collateral; and

               (vii) the replacement, extension or renewal of any Lien permitted
          by clauses  (iii)  through  (vi)  above  upon or in the same  property
          theretofore  subject thereto or the replacement,  extension or renewal
          (without  increase in the amount or change in any direct or contingent
          obligor) of the Debt secured thereby.

          (b) Debt. Create,  incur,  assume or suffer to exist, or permit any of
     its  Subsidiaries  to create,  incur,  assume or suffer to exist,  any Debt
     other than:

               (i) in the case of the Borrower,  Debt  incurred  pursuant to the
          Hedge Agreements;

               (ii)  in the  case of any of the  Subsidiaries  (other  than  the
          Borrower and the Foreign  Subsidiaries) of PSC, Debt owed to PSC or to
          a  wholly-owned  Subsidiary of PSC (other than a Foreign  Subsidiary),
          provided  that such Debt is evidenced  by a  promissory  note and such
          promissory  note is pledged to the  Secured  Parties  pursuant  to the
          terms of the Security Agreement; and

               (iii)  in the  case  of  PSC,  the  Borrower  and  any  of  their
          respective Subsidiaries,

                    (A) Debt under the Loan Documents,



                    (B) Debt secured by Liens  permitted by  Section 5.02(a)(iv)
               not  to  exceed  in  the   aggregate   $3,000,000   at  any  time
               outstanding,

                    (C)  Capitalized  Leases  not to  exceed  in  the  aggregate
               $3,000,000 at any time outstanding,

                    (D) the Surviving  Debt, and any Debt extending the maturity
               of,  or  refunding  or  refinancing,  in whole  or in  part,  any
               Surviving  Debt,  provided that the terms of any such  extending,
               refunding or refinancing  Debt, and of any agreement entered into
               and  of  any  instrument  issued  in  connection  therewith,  are
               otherwise  permitted by the Loan  Documents and provided  further
               that the  principal  amount of such  Surviving  Debt shall not be
               increased   above  the  principal   amount  thereof   outstanding
               immediately  prior to such  extension,  refunding or refinancing,
               and the  direct and  contingent  obligors  therefor  shall not be
               changed,  as a result of or in  connection  with such  extension,
               refunding or refinancing,

                    (E) Debt in respect of the Subordinated  Debt and the Seller
               Note; and

                    (F)  indorsement  of negotiable  instruments  for deposit or
               collection  or similar  transactions  in the  ordinary  course of
               business;

               (iv) in the case of PSC, Debt owed to the Borrower, provided that
          such Debt is evidenced by a promissory  note and such  promissory note
          is  pledged  to the  Secured  Parties  pursuant  to the  terms  of the
          Security Agreement; and

               (v) in the case of PSC and the Borrower,  unsecured Debt incurred
          in the ordinary course of business for the deferred  purchase price of
          property or services,  maturing within one year from the date created,
          and aggregating,  on a Consolidated basis, not more than $3,000,000 at
          any one time outstanding.


          (c) Lease Obligations.  Create,  incur,  assume or suffer to exist, or
     permit any of their  respective  Subsidiaries to create,  incur,  assume or
     suffer to exist,  any  obligations  as lessee (i) for the rental or hire of
     real or  personal  property  in  connection  with any  sale  and  leaseback
     transaction,  or  (ii) for  the  rental or hire of other  real or  personal
     property  of any  kind  under  leases  or  agreements  to  lease  including
     Capitalized  Leases  having an original term of one year or more that would
     cause the direct and contingent liabilities of PSC and its Subsidiaries, on
     a  Consolidated  basis,  in  respect  of all  such  obligations  to  exceed
     $3,000,000  payable in any period of 12  consecutive  months.  

          (d) Mergers,  Etc. Merge into or consolidate with any Person or permit
     any Person to merge into it, or permit any of their respective Subsidiaries
     to do so, except that (i) the Borrower and its  Subsidiaries may consummate
     the Merger, (ii) any Subsidiary of PSC


     (other  than the  Borrower)  may merge into or  consolidate  with any other
     Subsidiary of PSC (other than the Borrower or a Foreign  Subsidiary) or PSC
     provided that, in the case of any such merger or consolidation,  the Person
     formed  by  such  merger  or  consolidation   shall  be  either  PSC  or  a
     wholly-owned  Subsidiary of PSC,  (iii) any of the Borrower's  Subsidiaries
     may  merge  into  PSC;  (iv)  any  Foreign  Subsidiary  may  merge  into or
     consolidate with any other Foreign  Subsidiary,  provided that, in the case
     of such  merger or  consolidation,  the  Person  formed  by such  merger or
     consolidation  shall be a  wholly-owned  Subsidiary of PSC; and (v) PSC may
     merge into or  consolidate  with any other Person in a merger  permitted by
     Section  5.01(f)(i) or (vii),  provided that, in the case of such merger or
     consolidation,  PSC or such Subsidiary shall be the surviving  corporation;
     provided,  however,  that in each case,  immediately  after  giving  effect
     thereto,  no event shall occur and be continuing that constitutes a Default
     and, in the case of any merger or  consolidation  to which the  Borrower or
     PSC is a party,  the Borrower or PSC, as the case may be, is the  surviving
     corporation.

          (e) Sales, Etc. of Assets. Sell, lease,  transfer or otherwise dispose
     of, or permit any of their respective Subsidiaries to sell, lease, transfer
     or  otherwise  dispose of, any assets or grant any option or other right to
     purchase, lease or otherwise acquire any assets, except:

               (i) sales of Inventory in the ordinary course of its business,

               (ii)  in a  transaction  authorized  by  subsection (d)  of  this
          Section,

               (iii) sales of assets for cash and for fair value in an aggregate
          amount not to exceed $1,000,000 in any Fiscal Year,

               (iv)  the  sale of any  asset  by PSC or any of its  Subsidiaries
          (other than a bulk sale of inventory and a sale of  Receivables  other
          than delinquent  accounts for collection purposes only) so long as (A)
          the  purchase  price paid to PSC,  or such  Subsidiary  for such asset
          shall be no less than the fair market  value of such asset at the time
          of such sale,  (B) the purchase  price for such asset shall be paid to
          PSC or such Subsidiary  solely in cash and (C) the aggregate  purchase
          price paid to PSC and all of its  Subsidiaries  for such asset and all
          other assets sold by PSC and its  Subsidiaries  during the same Fiscal
          Year pursuant to this clause (iv) shall not exceed $1,000,000, and

               (v) so long as no  Default  shall  occur and be  continuing,  the
          grant  of any  option  or  other  right  to  purchase  any  asset in a
          transaction   which  would  be  permitted   under  the  provisions  of
          clause (iv) above,

     provided that in the case of sales of assets pursuant to clause (iv) above,
     PSC and the Borrower  shall, on the date of receipt by PSC, the Borrower or
     any of their  respective  Subsidiaries  of the Net Cash  Proceeds from such
     sale,  prepay  the  Advances  pursuant  to,  and in the amount and order of
     priority set forth in, Section 2.06(b)(ii), as specified therein.



     (f)  Investments  in Other  Persons.  Make or hold,  or  permit  any of its
Subsidiaries  to make or hold,  any  Investment  in any Person  other than:  

          (i)  Investments  by PSC and its  Subsidiaries  in their  Subsidiaries
     outstanding on the date hereof and additional  investments in  wholly-owned
     Subsidiaries  in an aggregate  amount  invested from the date hereof not to
     exceed $5,000,000; provided, however, that no more than an aggregate amount
     equal  to  $3,000,000  can be  invested  from the date  hereof  in  Foreign
     Subsidiaries;  provided,  further,  that with respect to Investments in any
     newly acquired or created wholly-owned  Subsidiary,  such Subsidiary shall
     become a  Subsidiary  Guarantor  pursuant  to the  terms of the  Subsidiary
     Guaranty and an  additional  grantor  pursuant to the terms of the Security
     Agreement and Intellectual Property Security Agreement;

          (ii) (A) loans to employees of PSC and its  Subsidiaries in connection
     with  purchases of stock of PSC pursuant to the PSC Stock Option Plan in an
     aggregate principal amount not to exceed $1,000,000 at any time outstanding
     and (B) loans and  advances  to  employees  in the  ordinary  course of the
     business  of  PSC,  the  Borrower  and  their  respective  Subsidiaries  as
     presently conducted in an aggregate principal amount not to exceed $500,000
     at any time outstanding;

          (iii)   Investments   by  PSC,  the  Borrower  and  their   respective
     Subsidiaries in Cash Equivalents;

          (iv)  Investments  by the  PSC,  the  Borrower  and  their  respective
     Subsidiaries Hedge Agreements permitted under Section 5.01(p);

          (v)  Investments  consisting  of  intercompany  Debt  permitted  under
     Section 5.02(b)(ii);

          (vi)  Investments  (A)  existing on the date hereof and  described  on
     Schedule 4.01(ii) hereto or (B) otherwise disclosed on such Schedule; and

          (vii) other  Investments in an aggregate amount invested not to exceed
     $3,000,000 in Persons other than wholly-owned Subsidiaries;  provided that,
     (1) any such  Investments  in any newly  acquired or created  Subsidiary of
     PSC, the Borrower or any of their  respective  Subsidiaries  shall become a
     Subsidiary Guarantor pursuant to the terms of the Subsidiary Guaranty and a
     collateral  grantor  pursuant to the terms of the  Security  Agreement  and
     Intellectual Property Security Agreement,  (2) immediately before and after
     giving effect thereto,  no Default shall have occurred and be continuing or
     would  result  therefrom;  and  (3) any  business  acquired  or invested in
     pursuant to this clause (vii)  shall be in the same line of business as the
     business of PSC, the Borrower or any of their respective Subsidiaries.


          (g) Dividends,  Etc. Declare or pay any dividends,  purchase,  redeem,
     retire,  defease or otherwise acquire for value any of its capital stock or
     any  warrants,  rights or options to acquire  such  capital  stock,  now or
     hereafter outstanding, return any capital to its stockholders as such, make
     any  distribution  of assets,  capital stock,  warrants,  rights,  options,
     obligations or securities to its  stockholders as such or issue or sell any
     capital  stock or any  warrants,  rights or options to acquire such capital
     stock,  or permit any of its  Subsidiaries  to do any of the  foregoing  or
     permit any of its  Subsidiaries  to purchase,  redeem,  retire,  defease or
     otherwise  acquire  for  value any  capital  stock of the  Borrower  or any
     warrants,  rights or options to acquire such  capital  stock or to issue or
     sell any capital stock or any  warrants,  rights or options to acquire such
     capital  stock,  except  that,  (i) PSC may declare and pay  dividends  and
     distributions  payable  only  in  common  stock  of  PSC,  (ii)  a  Foreign
     Subsidiary may declare and pay dividends and distributions to PSC, provided
     that the Secured  Parties shall have a perfected  first  priority  security
     interest in the property  comprising  such  dividends or  distribution  and
     (iii) PSC may acquire shares of its common stock for an aggregate  purchase
     price during the period from the date hereof through the  Termination  Date
     not to exceed  $3,000,000,  provided that, at the time of such  acquisition
     and immediately after giving effect thereto, (x) the excess of Consolidated
     total assets over  Consolidated  total  liabilities  shall not be less than
     $44,000,000 and (y) no Default shall have occurred and be continuing.

          (h)  Change  in  Nature  of  Business.  Make,  or  permit  any  of its
     Subsidiaries  to make, any material change in the nature of its business as
     carried on at the date hereof.

          (i) Charter  Amendments.  Amend, or permit any of its  Subsidiaries to
     amend, its certificate of incorporation or bylaws, other than any amendment
     that could not reasonably be expected to have a Material Adverse Effect.

          (j)  Accounting  Changes.  Make  or  permit,  or  permit  any  of  its
     Subsidiaries to make or permit,  any change in  (i) accounting  policies or
     reporting practices,  except as required or permitted by generally accepted
     accounting principles or (ii) the Fiscal Year.

          (k) Prepayments,  Etc. of Debt. Prepay, redeem,  purchase,  defease or
     otherwise satisfy prior to the scheduled maturity thereof in any manner, or
     make any  payment in  violation  of any  subordination  terms of, any Debt,
     other than (i) the prepayment of the Advances in accordance  with the terms
     of this  Agreement and (ii) regularly  scheduled or required  repayments or
     redemptions of Surviving Debt, or amend, modify or change in any manner any
     term or condition  of any  Surviving  Debt,  the  Subordinated  Debt or the
     Seller Note, or permit any of its  Subsidiaries  to do any of the foregoing
     other than to prepay any Debt payable to the Borrower.

          (l)  Amendment,  Etc. of Related  Documents.  Cancel or terminate  any
     Related  Document or consent to or accept any  cancellation  or termination
     thereof, amend, modify or change in any manner any term or condition of any
     Related Document or give any consent, waiver or approval thereunder,  waive
     any  default  under or any breach of any term or  condition  of any Related
     Document,  agree in any  manner to any  other  amendment,  modification  or
     change of any term or condition  of any Related  Document or take any other
     action in connection with any Related Document that would materially impair
     the value of the  interest or rights of PSC or the Borrower  thereunder  or
     that would materially impair the rights or interests of the  Administrative
     Agent or any Lender Party,  or permit any of its  Subsidiaries to do any of
     the foregoing.



          (m)  Amendment,  Etc. of Material  Contracts.  Cancel or terminate any
     Material  Contract or consent to or accept any  cancellation or termination
     thereof,  amend or  otherwise  modify  any  Material  Contract  or give any
     consent,  waiver or approval thereunder,  waive any default under or breach
     of any  Material  Contract,  agree in any  manner to any  other  amendment,
     modification or change of any term or condition of any Material Contract or
     take any other action in connection  with any Material  Contract that would
     materially  impair  the value of the  interest  or  rights of the  Borrower
     thereunder  or that would  materially  impair the interest or rights of the
     Administrative Agent or any Lender Party, or permit any of its Subsidiaries
     to do any of the foregoing.

          (n) Negative  Pledge.  Enter into or suffer to exist, or permit any of
     its   Subsidiaries  to  enter  into  or  suffer  to  exist,  any  agreement
     prohibiting or conditioning the creation or assumption of any Lien upon any
     of its property or assets other than (i) in favor of the Secured Parties or
     (ii) in  connection with (A) any Surviving Debt and any Debt outstanding on
     the date  such  Subsidiary  first  becomes a  Subsidiary  or  (B) any  Debt
     permitted by Section 5.02(b)(iii)(F) hereof.

          (o) Partnerships,  New  Subsidiaries.  (i) Become a general partner in
     any general or limited  partnership or joint venture,  or permit any of its
     Subsidiaries  to do so, other than any  Subsidiary the sole assets of which
     consist of its interest in such partnership or joint venture or (ii) create
     any new  Subsidiaries  unless such newly created  Subsidiary shall become a
     Subsidiary  Guarantor pursuant to the terms of the Subsidiary  Guaranty and
     an additional  grantor pursuant to the terms of the Security  Agreement and
     the Intellectual Property Security Agreement.

          (p)   Speculative   Transactions.   Engage,   or  permit  any  of  its
     Subsidiaries to engage, in any transaction  involving  commodity options or
     futures contracts or any similar speculative  transactions except for Hedge
     Agreements permitted under Section 5.02(p).

          (q) Capital  Expenditures.  Make, or permit any of its Subsidiaries to
     make, any Capital  Expenditures  that would cause the aggregate of all such
     Capital Expenditures made by PSC, the Borrower and its Subsidiaries in any 
     period set forth below to exceed the amount set forth below for such period



          Period                                                        Amount

Effective Date through 12/31/9 ..........................            $ 7,000,000

Fiscal Year Ending 12/31/97 .............................            $12,000,000

Fiscal Year Ending 12/31/98 .............................            $15,000,000

Fiscal Year Ending 12/31/99 .............................            $18,000,000

Fiscal Year Ending 12/31/2000 ...........................            $19,000,000

Fiscal Year Ending 12/31/2001 ...........................            $15,000,000

1/1/2002 through 6/30/2002 ..............................            $ 7,500,000




     SECTION 5.03. Reporting  Requirements.  So long as any Advance shall remain
unpaid, any Letter of Credit shall be outstanding or any Lender Party shall have
any  Commitment  hereunder,  PSC and the  Borrower  will  furnish  to the Lender
Parties:

          (a) Default  Notice.  As soon as possible  and in any event within two
     Business Days after  obtaining  knowledge of the occurrence of each Default
     or any  event,  development  or  occurrence  reasonably  likely  to  have a
     Material  Adverse  Effect  continuing  on the  date  of such  statement,  a
     statement of the chief  financial  officer of PSC setting  forth details of
     such  Default and the action  that PSC has taken and  proposes to take with
     respect thereto.  

          (b) Monthly  Financials.  As soon as available and in any event within
     45 days after the end of each month,  a  Consolidated  balance sheet of PSC
     and its Subsidiaries as of the end of such month and Consolidated statement
     of  income  and a  Consolidated  statement  of  cash  flows  of PSC and its
     Subsidiaries for the period commencing at the end of the previous month and
     ending with the end of such month and Consolidated  statement of income and
     a Consolidated  statement of cash flows of PSC and its Subsidiaries for the
     period  commencing  at the end of the previous  Fiscal Year and ending with
     the end of such month,  duly  certified by the chief  financial  officer of
     PSC.

          (c) Quarterly Financials. As soon as available and in any event within
     45 days  after the end of each of the first  three  quarters of each Fiscal
     Year,  Consolidated balance sheet of PSC and its Subsidiaries as of the end
     of such quarter and  Consolidated  statement  of income and a  Consolidated
     statement  of  cash  flows  of PSC  and its  Subsidiaries  for  the  period
     commencing  at the end of the previous  fiscal  quarter and ending with the
     end of such  fiscal  quarter  and  Consolidated  statement  of income and a
     Consolidated  statement of cash flows of PSC and its  Subsidiaries  for the
     period  commencing  at the end of the previous  Fiscal Year and ending with
     the end of such quarter, setting forth in each case in comparative form the



     corresponding  figures for the corresponding period of the preceding Fiscal
     Year and the corresponding figures from the budgets for such period and for
     the Fiscal Year which  includes such period,  all in reasonable  detail and
     duly  certified  (subject  to  year-end  audit  adjustments)  by the  chief
     financial  officer of PSC as having been prepared in accordance  with GAAP,
     together with (i) a certificate of said officer stating that no Default has
     occurred and is continuing or, if a Default has occurred and is continuing,
     a statement as to the nature  thereof and the action that PSC has taken and
     proposes  to  take  with  respect  thereto  and  (ii) a  schedule  in  form
     satisfactory to the Administrative Agent of the computations used by PSC in
     determining  compliance  with the covenants  contained in Sections  5.04(a)
     through (d),  provided  that in the event of any change in GAAP used in the
     preparation  of such  financial  statements,  PSC shall  also  provide,  if
     necessary  for  the  determination  of  compliance  with  Section  5.04,  a
     statement of reconciliation conforming such financial statements to GAAP.

          (d) Annual Financials. As soon as available and in any event within 90
     days after the end of each Fiscal  Year,  a copy of the annual audit report
     for such year for PSC and its Subsidiaries,  including therein Consolidated
     and consolidating  balance sheets of PSC and its Subsidiaries as of the end
     of such Fiscal Year and Consolidated and consolidating statements of income
     and a Consolidated  statement of cash flows of PSC and its Subsidiaries for
     such  Fiscal  Year,  in each case  setting  forth in  comparative  form the
     corresponding  figures  for the  prior  Fiscal  Year and the  corresponding
     figures  from the budget for such Fiscal Year and in each case  accompanied
     (in the  case of such  Consolidated  financial  statements)  by an  opinion
     acceptable  to the  Required  Lenders  of  Arthur  Anderson  LLP  or  other
     independent  public  accountants of recognized  standing  acceptable to the
     Required Lenders, together with (i) a letter of such accounting firm to the
     Lender  Parties  stating  that in the  course of the  regular  audit of the
     business of PSC and its  Subsidiaries,  which audit was  conducted  by such
     accounting firm in accordance with generally  accepted auditing  standards,
     such  accounting firm has obtained no knowledge that a Default has occurred
     and is continuing, or if, in the opinion of such accounting firm, a Default
     has occurred and is continuing,  a statement as to the nature thereof, (ii)
     a  schedule  in  form  satisfactory  to  the  Administrative  Agent  of the
     computations used by such accountants in determining, as of the end of such
     Fiscal Year,  compliance with the covenants  contained in Sections  5.04(a)
     through (d),  provided  that in the event of any change in GAAP used in the
     preparation  of such  financial  statements,  PSC shall  also  provide,  if
     necessary  for  the  determination  of  compliance  with  Section  5.04,  a
     statement of  reconciliation  conforming such financial  statements to GAAP
     and (iii) a certificate of the chief financial  officer of PSC stating that
     no Default has occurred and is continuing or, if a default has occurred and
     is continuing, a statement as to the nature thereof and the action that PSC
     has taken and proposes to take with respect thereto.

          (e) Annual  Forecasts.  As soon as available and in any event no later
     than 30 days  after the end of each  Fiscal  Year,  forecasts  prepared  by
     management of PSC, in form reasonably  satisfactory  to the  Administrative
     Agent, of balance sheets,  income  statements and cash flow statements on a
     quarterly basis for the Fiscal Year following such Fiscal Year then ended.


          (f) ERISA Events and ERISA  Reports.  Promptly and in any event within
     10 days after any Loan Party or any ERISA  Affiliate knows or has reason to
     know that any ERISA Event has occurred,  a statement of the chief financial
     officer of PSC  describing  such ERISA Event and the action,  if any,  that
     such Loan Party or such ERISA Affiliate has taken and proposes to take with
     respect  thereto  and  (ii) on the  date any  records,  documents  or other
     information must be furnished to the PBGC with respect to any Plan pursuant
     to  Section  4010  of  ERISA,  a  copy  of  such  records,   documents  and
     information.

          (g) Plan Terminations.  Promptly and in any event within five Business
     Days after receipt thereof by any Loan Party or any ERISA Affiliate, copies
     of each notice from the PBGC stating its intention to terminate any Plan or
     to have a trustee appointed to administer any Plan.

          (h) Actuarial Reports. Promptly upon receipt thereof by any Loan Party
     or any ERISA Affiliate, a copy of the annual actuarial valuation report for
     each Plan the funded  current  liability  percentage (as defined in Section
     302(d)(8)  of  ERISA)  of which is less  than 90% or the  unfunded  current
     liability of which exceeds $250,000.

          (i) Plan  Annual  Reports.  Promptly  and in any event  within 30 days
     after the filing thereof with the Internal Revenue Service,  copies of each
     Schedule B (Actuarial  Information) to the annual report (Form 5500 Series)
     with respect to each Plan.

          (j) Multiemployer Plan Notices.  Promptly and in any event within five
     Business  Days  after  receipt  thereof  by any  Loan  Party  or any  ERISA
     Affiliate from the sponsor of a Multiemployer  Plan,  copies of each notice
     concerning  (i) the   imposition  of  Withdrawal   Liability  by  any  such
     Multiemployer  Plan,  (ii) the  reorganization  or termination,  within the
     meaning of Title IV of ERISA, of any such  Multiemployer  Plan or (iii) the
     amount of liability incurred,  or that may be incurred,  by such Loan Party
     or any ERISA Affiliate in connection with any event described in clause (i)
     or (ii).

          (k) Litigation. Promptly after the commencement thereof, notice of all
     actions, suits, investigations, litigation and proceedings before any court
     or  governmental   department,   commission,   board,  bureau,   agency  or
     instrumentality,  domestic or foreign,  affecting  any Loan Party or any of
     its  Subsidiaries  of the type described in Section  4.01(j),  and promptly
     after the occurrence thereof,  notice of any material adverse change in the
     status or the financial effect on any Loan Party or any of its Subsidiaries
     of the Disclosed Litigation from that described on Schedule 3.01(g).

          (l) Securities Reports.  Promptly after the sending or filing thereof,
     copies of all proxy statements,  financial  statements and reports that any
     Loan Party or any of its Subsidiaries sends to its stockholders, and copies
     of  all  regular,  periodic  and  special  reports,  and  all  registration
     statements,  that any Loan Party or any of its Subsidiaries  files with the
     Securities and Exchange  Commission or any governmental  authority that may
     be substituted therefor, or with any national securities exchange.



          (m) Creditor Reports. Promptly after the furnishing thereof, copies of
     any statement or report  furnished to any other holder of the securities of
     any Loan Party or of any of its  Subsidiaries  pursuant to the terms of any
     indenture,  loan or credit or similar agreement and not otherwise  required
     to be furnished to the Lender Parties  pursuant to any other clause of this
     Section 5.03.

          (n) Agreement  Notices.  Promptly upon receipt thereof,  copies of all
     notices,  requests and other documents received by any Loan Party or any of
     its  Subsidiaries  under or pursuant  to any  Related  Document or Material
     Contract or  indenture,  loan or credit or similar  agreement  regarding or
     related to any breach or  default by any party  thereto or any other  event
     that could  materially  impair the value of the  interests or the rights of
     any Loan Party or otherwise  have a Material  Adverse  Effect and copies of
     any  amendment,  modification  or waiver of any  provision  of any  Related
     Agreement  or  Material  Contract or  indenture,  loan or credit or similar
     agreement and, from time to time upon request by the Administrative  Agent,
     such  information  and  reports  regarding  the Related  Documents  and the
     Material Contracts as the Administrative Agent may reasonably request.

          (o)  Revenue  Administrative  Agent  Reports.  Within  10  days  after
     receipt,  copies of all  Revenue  Administrative  Agent  Reports  (Internal
     Revenue  Service  Form 886),  or other  written  proposals  of the Internal
     Revenue  Service,  that propose,  determine or otherwise set forth positive
     adjustments  to the Federal  income tax liability of the  affiliated  group
     (within the meaning of Section  1504(a)(1) of the Internal Revenue Code) of
     which PSC is a member aggregating $1,000,000 or more.

          (p) Tax Certificates.  Promptly, and in any event within five Business
     Days after the due date  (with  extensions)  for  filing the final  Federal
     income tax return in respect of each taxable  year, a  certificate  (a "Tax
     Certificate"),  signed by the President or the chief  financial  officer of
     PSC,  stating that the common  parent of the  affiliated  group (within the
     meaning of Section 1504(a)(1) of the Internal Revenue Code) of which PSC is
     a  member  has  paid  to the  Internal  Revenue  Service  or  other  taxing
     authority,  or to PSC,  the  full  amount  that  such  affiliated  group is
     required to pay in respect of Federal income tax for such year and that PSC
     and its  Subsidiaries  have received any amounts  payable to them, and have
     not paid amounts in respect of taxes (Federal,  state, local or foreign) in
     excess of the amount they are required to pay,  under the Tax Agreements in
     respect of such taxable year.

          (q)  Environmental   Conditions.   Promptly  after  the  assertion  or
     occurrence  thereof,  notice of any Environmental  Action against or of any
     noncompliance  by any  Loan  Party  or any of  its  Subsidiaries  with  any
     Environmental  Law or  Environmental  Permit that (i) could  reasonably  be
     expected  to have a Material  Adverse  Effect or  (ii) cause  any  property
     described in the Mortgages to be subject to any  restrictions on ownership,
     occupancy, use or transferability under any Environmental Law.

          (r) Real  Property.  As soon as  available  and in any event within 30
     days  after  the  end  of  each  Fiscal   Year,   a  report   supplementing
     Schedules 4.01(ff) and 4.01(gg) hereto,  including an identification of all
     real and leased property disposed of by PSC or any of its Subsidiaries 



     during such  Fiscal  Year,  a list and  description  (including  the street
     address,  county or other relevant jurisdiction,  state, record owner, book
     value  thereof,  and in the case of leases  of  property,  lessor,  lessee,
     expiration  date and  annual  rental  cost  thereof)  of all real  property
     acquired or leased during such Fiscal Year and a description  of such other
     changes in the  information  included in such Schedules as may be necessary
     for such Schedules to be accurate and complete.

          (s)  Insurance.  As soon as available  and in any event within 30 days
     after the end of each  Fiscal  Year,  a report  summarizing  the  insurance
     coverage  (specifying type, amount and carrier) in effect for the each Loan
     Party and its  Subsidiaries  and containing such additional  information as
     any Lender Party (through the Administrative Agent) may reasonably specify.

          (t) Borrowing Base Certificate.  As soon as available and in any event
     within 10  Business  Days after the end of each  month,  a  Borrowing  Base
     Certificate,  as at the end of the previous  month,  certified by the chief
     financial officer of the Borrower.

          (u) Management  Letters.  As soon as available and in any event within
     10  Business  Days after the  receipt  thereof,  copies of any  "management
     letter" or similar  letter  received by the  Borrower,  PSC or the board of
     directors (or committee thereof) of either such Person from its independent
     public accountants.

          (v) Other Information. Such other information respecting the business,
     condition (financial or otherwise), operations,  performance, properties or
     prospects of any Loan Party or any of its  Subsidiaries as any Lender Party
     (through  the  Administrative  Agent)  may  from  time to  time  reasonably
     request.

     SECTION  5.04.  Financial  Covenants.  So long as any Advance  shall remain
unpaid, any Letter of Credit shall be outstanding or any Lender Party shall have
any Commitment hereunder, PSC will:

     (a) Fixed Charge Coverage Ratio. Maintain at the end of each fiscal quarter
of PSC a ratio of (i) Consolidated  EBITDA for the most recently  completed four
fiscal quarters of PSC (provided however that if such four fiscal quarter period
includes  any or all of the  fiscal  quarters  ending  on  September  30,  1995,
December 31, 1995, March 31, 1996 or June 30, 1996, Consolidated EBITDA shall be
calculated  by using the Pro Forma  EBITDA for each such fiscal  quarter in such
four fiscal quarter period) less Capital  Expenditures  made during such period,
less the aggregate amount of federal, state, local and foreign taxes paid by PSC
and its  Subsidiaries  during such  period to the (ii) sum of (w) cash  interest
payable by PSC and its Subsidiaries on all Debt during such period plus (x) cash
rentals payable under  Capitalized  Leased during such period plus (y) principal
amounts of all Funded Debt payable,  in each case,  by PSC and its  Subsidiaries
during  such period plus (z) the  aggregate  purchase  price paid by PSC and its
Subsidiaries during such period to purchase capital stock of PSC as permitted by
Section  5.02(g),  of not less than the ratio  set forth  below for such  period
(provided,  however, that if such four fiscal quarter period includes any or all
of the fiscal quarters ending on September 30, 1995, December 31, 1995, 




March 31, 1996 or June 30, 1996, (i) Capital  Expenditures  for such four fiscal
quarter  period  shall  be the  lesser  of (A) the  product  of  actual  Capital
Expenditures  made during such period  multiplied by a fraction the numerator of
which is four and the denominator of which is the number of fiscal quarters that
have elapsed since the Closing Date and (B)  $12,000,000,  (ii) interest expense
for such four fiscal quarter period shall be the product of the actual amount of
interest expense payable during such period since the Closing Date multiplied by
     a fraction the numerator of which is four and the  denominator  of which is
     the number of fiscal  quarters that have elapsed since the Closing Date and
     (iii)  aggregate taxes paid during such four fiscal quarter period shall be
     the product of the actual  taxes paid during such period  since the Closing
     Date  multiplied  by a  fraction  the  numerator  of  which is four and the
     denominator  of which is the number of fiscal  quarters  which have elapsed
     since the Closing): 

      Four Fiscal Quarters Ending     In Ratio

           12/31/96 ................   1.15x

            3/31/97 ................   1.15x

            6/30/97 ................   1.15x

            9/30/97 ................   1.15x

           12/31/97 ................   1.15x

            3/31/98 ................   1.15x

            6/30/98 ................   1.15x

            9/30/98 ................   1.15x

           12/31/98 ................   1.15x

3/31/99 and each period thereafter .   1.25x

 


          (b) Total Debt to EBITDA  Ratio.  Maintain  at the end of each  fiscal
     quarter of PSC a Total Debt Ratio for such date of not more than the amount
     set forth below for such period;


     Four Fiscal Quarters Ending In      Ratio

   Effective date to 12/31/96 ......     5.0x

             3/31/97 ...............     4.75x

             6/30/97 ...............     4.75x

             9/30/97 ...............     4.25x




            12/31/97 ...............     4.25x

             3/31/98 ...............     3.75x

             6/30/98 ...............     3.75x

             9/30/98 ...............     3.75x

            12/31/98 ...............     3.75x

     3/31/98 and thereafter ........     3.25x


          (c) Senior  Debt to EBITDA  Ratio.  Maintain at the end of each fiscal
     quarter  of PSC a  ratio  of  Senior  Debt  of  PSC  and  its  Subsidiaries
     outstanding on the last day of such fiscal quarter to  Consolidated  EBITDA
     for the most  recently  completed  four fiscal  quarters of PSC  (provided,
     however, that (i) if such four fiscal quarter period includes any or all of
     the fiscal quarters ending on September 30, 1995,  December 31, 1995, March
     31, 1996 or June 30, 1996, Consolidated EBITDA shall be calculated by using
     the Pro Forma  EBITDA  for each such  fiscal  quarter  in such four  fiscal
     quarter  period,  and  (ii)  for  purposes  of  calculating  the  aggregate
     principal  amount of Senior Debt  outstanding on the last day of any fiscal
     quarter,  the aggregate  principal amount of Working Capital Advances shall
     be deemed to be  outstanding in a aggregate  principal  amount equal to the
     average principal amount of Working Capital Advances outstanding during the
     two fiscal  quarters ended on such last day) of not more than the ratio set
     forth below for such period:


 Four Fiscal Quarters Ending In         Ratio

   Effective Date to 12/31/96 ......     3.75x

             3/31/97 ...............     3.50x

             6/30/97 ...............     3.50x


             9/30/97 ...............     3.0x

            12/31/97 ...............     3.0x

             3/31/98 ...............     2.50x

             6/30/98 ...............     2.50x

             9/30/98 ...............     2.50x

            12/31/98 ...............     2.25x

     3/31/99 and thereafter ........     2.0x


          (d)  Interest  Coverage  Ratio.  Maintain as of the end of each fiscal
     quarter of PSC a ratio of (i)  Consolidated  EBITDA  for the most  recently
     completed four fiscal quarters of PSC (provided, however, that if such four
     fiscal quarter period includes any or all of the





     fiscal quarters ending on September 30, 1995,  December 31, 1995, March 31,
     1996 or June 30, 1996, Consolidated EBITDA shall be calculated by using the
     Pro Forma EBITDA for each such fiscal  quarter in such four fiscal  quarter
     period)  to (ii)  Interest  Expense  of PSC and its  Subsidiaries  for such
     period  of not  less  than the  ratio  set  forth  below  for  such  period
     (provided, however, that if such four fiscal quarter period includes any or
     all of the fiscal quarters ending on September 30, 1995, December 31, 1995,
     March 31,  1996 or June 30,  1996,  Interest  Expense  for such four fiscal
     quarter  period shall be actual  Interest  Expense during such period since
     the Closing Date  multiplied  by a fraction the  numerator of which is four
     and the  denominator  of which is the number of fiscal  quarters  that have
     elapsed since the Closing Date):


 Four Fiscal Quarters Ending In         Ratio

   Effective Date to 12/31/96 ........   2.0x

             3/31/97 .................   2.50x

             6/30/97 .................   2.50x

             9/30/97 .................   2.50x

            12/31/97 .................   2.50x

             3/31/98 .................   3.0x

             6/30/98 .................   3.0x

             9/30/98 .................   3.0x

            12/30/98 .................   3.0x

     3/31/99 and thereafter ..........   3.50x


     (e) Net Worth. Maintain at all times an excess of Consolidated total assets
over  Consolidated  total  liabilities,  in each case,  of the  Borrower and its
Subsidiaries of not less than (i) $34,000,000  plus (ii) 75% of Consolidated net
income of PSC and its  Subsidiaries for during the period after June 30, 1996 to
and including each date of determination computed on a cumulative basis for
said entire period. 

                                   ARTICLE VI

                                EVENTS OF DEFAULT

     SECTION 6.01. Events of Default. If any of the following events ("Events of
Default") shall occur and be continuing:

     (a) (i) the  Borrower  shall fail to pay any  principal of any Advance when
the same shall become due and payable or (ii) the Borrower shall fail to pay any
interest on any


     Advance,  or any Loan Party shall fail to make any other  payment under any
     Loan Document, in each case under this clause (ii) within two Business Days
     after the same becomes due and payable; or

          (b) any  representation  or warranty made by any Loan Party (or any of
     its officers)  under or in connection with any Loan Document shall prove to
     have been incorrect in any material respect when made or confirmed; or

          (c) the Borrower  shall fail to perform or observe any term,  covenant
     or agreement contained in Section 2.14, 5.01(e), (f), (g), (m), (o) or (p),
     5.02, 5.03 or 5.04; or

          (d) any Loan Party shall fail to perform  any other term,  covenant or
     agreement  contained  in any Loan  Document on its part to be  performed or
     observed if such  failure  shall  remain  unremedied  for 10 days after the
     earlier of the date on which  (A) a  Responsible  Officer of any Loan Party
     becomes aware of such failure or (B) written notice thereof shall have been
     given to the Borrower by the Administrative Agent or any Lender Party; or

          (e) any Loan  Party or any of its  Subsidiaries  shall fail to pay any
     principal of, premium or interest on or any other amount payable in respect
     of any Debt that is  outstanding  in a principal  or notional  amount of at
     least  $1,000,000  either  individually  or in the aggregate (but excluding
     Debt  outstanding  hereunder) of such Loan Party or such Subsidiary (as the
     case may be),  when the same becomes due and payable  (whether by scheduled
     maturity, required prepayment,  acceleration,  demand or otherwise); or any
     other event shall occur or  condition  shall exist under any  agreement  or
     instrument  relating  to any such Debt,  in each case if the effect of such
     event or condition is to accelerate,  or to permit the acceleration of, the
     maturity  of such Debt or  otherwise  to cause,  or to  permit  the  holder
     thereof to cause,  such Debt to mature;  or any such Debt shall be declared
     to be due and payable or required to be prepaid or redeemed  (other than by
     a regularly  scheduled  required  prepayment or  redemption),  purchased or
     defeased,  or an offer to prepay,  redeem,  purchase  or defease  such Debt
     shall be  required  to be made,  in each case prior to the stated  maturity
     thereof; or

          (f) any Loan Party or any of its Subsidiaries  shall generally not pay
     its debts as such debts become due, or shall admit in writing its inability
     to pay its debts  generally,  or shall  make a general  assignment  for the
     benefit of creditors;  or any proceeding  shall be instituted by or against
     any Loan  Party  or any of its  Subsidiaries  seeking  to  adjudicate  it a
     bankrupt or insolvent, or seeking liquidation,  winding up, reorganization,
     arrangement,  adjustment,  protection,  relief, or composition of it or its
     debts under any law relating to bankruptcy, insolvency or reorganization or
     relief of  debtors,  or  seeking  the  entry of an order for  relief or the
     appointment of a receiver, trustee, or other similar official for it or for
     any  substantial  part  of its  property  and,  in  the  case  of any  such
     proceeding  instituted  against it (but not instituted by it) that is being
     diligently  contested  by it in good faith,  either such  proceeding  shall
     remain  undismissed  or  unstayed  for a  period  of 30  days or any of the
     actions sought in such proceeding (including, without limitation, the entry
     of an order for relief against, or the appointment of a receiver,  trustee,
     custodian or other similar  official for, it or any substantial part of its
     property) shall occur; or any Loan Party or any of its Subsidiaries


     shall take any  corporate  action to authorize any of the actions set forth
     above in this subsection (f); or

          (g) any  judgment  or order  for the  payment  of money in  excess  of
     $1,000,000  shall  be  rendered  against  any  Loan  Party  or  any  of its
     Subsidiaries  and  either  (i) enforcement   proceedings  shall  have  been
     commenced by any creditor  upon such  judgment or order or (ii) there shall
     be any period of 10 consecutive  days during which a stay of enforcement of
     such judgment or order,  by reason of a pending appeal or otherwise,  shall
     not be in effect; or

          (h) any  non-monetary  judgment or order shall be rendered against any
     Loan Party or any of its Subsidiaries  that is reasonably  likely to have a
     Material  Adverse  Effect,  and there shall be any period of 10 consecutive
     days during  which a stay of  enforcement  of such  judgment  or order,  by
     reason of a pending appeal or otherwise, shall not be in effect; or

          (i) any provision of any Loan Document after delivery thereof pursuant
     to  Section 3.01  or  5.01(o)  shall for any  reason  cease to be valid and
     binding on or  enforceable  against  any Loan Party to it, or any such Loan
     Party shall so state in writing; or

          (j) any Collateral Document after delivery thereof pursuant to Section
     3.01 or 5.01(o)  shall for any reason  (other  than  pursuant  to the terms
     thereof)  cease to create a valid and perfected  first priority lien on and
     security interest in the Collateral purported to be covered thereby; or

          (k) (i) any Person or two or more Persons acting in concert shall have
     acquired  beneficial  ownership  (within  the  meaning of Rule 13d-3 of the
     Securities and Exchange  Commission  under the  Securities  Exchange Act of
     1934), directly or indirectly,  of Voting Stock of PSC (or other securities
     convertible  into  such  Voting  Stock)  representing  30% or  more  of the
     combined voting power of all Voting Stock of PSC; (ii) during any period of
     up to 24 consecutive  months,  commencing  before or after the date of this
     Agreement,  individuals  who at the beginning of such 24-month  period were
     directors of PSC (together  with any other  director  whose election to the
     Board of  Directors of PSC (or whose  nomination  by the Board of Directors
     for election by the stockholders of PSC) was approved by a vote of at least
     a majority of the directors then in office who either were directors at the
     beginning  of such period or whose  election  was  previously  so approved)
     shall  cease  for any  reason  to  constitute  a  majority  of the board of
     directors  of PSC; or  (iii) any  Person or two or more  Persons  acting in
     concert shall have acquired by contract or otherwise, or shall have entered
     into a contract or arrangement that, upon consummation,  will result in its
     or their  acquisition of the power to exercise,  directly or indirectly,  a
     controlling influence over the management or policies of PSC; or

          (l) any ERISA Event shall have occurred with respect to a Plan and the
     sum  (determined  as of the date of  occurrence of such ERISA Event) of the
     Insufficiency of such Plan and the Insufficiency of any and all other Plans
     with respect to which an ERISA Event shall have occurred and then exist (or
     the liability of the Loan Parties and the ERISA Affiliates  related to such
     ERISA Event) exceeds $1,000,000; or



          (m) any Loan Party or any ERISA  Affiliate shall have been notified by
     the  sponsor  of a  Multiemployer  Plan  that  it has  incurred  Withdrawal
     Liability to such  Multiemployer  Plan in an amount that,  when  aggregated
     with all other amounts  required to be paid to  Multiemployer  Plans by the
     Loan Parties and the ERISA Affiliates as Withdrawal  Liability  (determined
     as of the  date of  such  notification),  exceeds  $1,000,000  or  requires
     payments exceeding $250,000 per annum; or

          (n) any Loan Party or any ERISA  Affiliate shall have been notified by
     the  sponsor of a  Multiemployer  Plan that such  Multiemployer  Plan is in
     reorganization  or is being  terminated,  within the meaning of Title IV of
     ERISA, and as a result of such  reorganization or termination the aggregate
     annual  contributions  of the Loan Parties and the ERISA  Affiliates to all
     Multiemployer  Plans that are then in  reorganization  or being  terminated
     have  been  or will be  increased  over  the  amounts  contributed  to such
     Multiemployer  Plans  for  the  plan  years  of  such  Multiemployer  Plans
     immediately  preceding  the  plan  year in  which  such  reorganization  or
     termination occurs by an amount exceeding $1,000,000; or

          (o) there  shall  occur in the  reasonable  judgment  of the  Required
     Lenders any Material Adverse Change; or

          (p) any Borrowing Base Deficiency shall occur; or

          (q) on or before  December  30, 1996 (i) the  Borrower  shall not have
     good,  marketable and insurable fee simple title to the IRB Property,  free
     and clear of all Liens, other than the Permitted  Encumbrances (which shall
     not include any Liens arising under the IRB  Documents) as set forth in the
     Oregon  Deed of Trust  or (ii)  the  Administrative  Agent  shall  not have
     received  a  Mortgage  Policy  on the IRB  Property  that  complies  in all
     respects with the provisions of Section 3.01 (l)(xi)(B), provided that such
     Mortgage  Policy  shall  insure that the Lien created by the Oregon Deed of
     Trust is subject  only to Permitted  Encumbrances  (which shall not include
     any Liens arising under the IRB Documents);

then, and in any such event, the Administrative  Agent (i) shall at the request,
or may with the consent,  of the Required  Lenders,  by notice to the  Borrower,
declare the Commitments of each Appropriate Lender (other than the Commitment in
respect of Letter of Credit  Advances by the Issuing  Bank or a Working  Capital
Lender pursuant to Section 2.03(c)) and Swing Line Advances by a Working Capital
Lender  pursuant to Section  2.02(b) and of the Issuing Bank to issue Letters of
Credit to be terminated,  whereupon the same shall forthwith terminate, and (ii)
shall at the request, or may with the consent,  of the Required Lenders,  (A) by
notice to the Borrower,  declare the Notes,  all interest  thereon and all other
amounts  payable  under  this  Agreement  and the  other  Loan  Documents  to be
forthwith due and payable,  whereupon the Notes,  all such interest and all such
amounts  shall become and be forthwith  due and  payable,  without  presentment,
demand, protest or further notice of any kind, all of which are hereby expressly
waived by the Borrower and (B) by notice to each party  required under the terms
of any  agreement  in  support  of which a Standby  Letter of Credit is  issued,
request  that all  Obligations  under such  agreement  be declared to be due and
payable; provided, however, that in the event of an actual or deemed entry of an
order for relief with respect to any Loan Party or any of its Subsidiaries under



the Federal  Bankruptcy Code, (x) the obligation of each Lender to make Advances
(other than Letter of Credit  Advances by the Issuing Bank or a Working  Capital
Lender  pursuant to Section 2.03(c) and Swing Line Advances by a Working Capital
Lender  pursuant to Section  2.02(b) and of the Issuing Bank to issue Letters of
Credit shall  automatically  be terminated and (y) the Notes,  all such interest
and all such amounts shall automatically become and be due and payable,  without
presentment,  demand, protest or any notice of any kind, all of which are hereby
expressly waived by the Borrower.

     SECTION 6.02. Actions in Respect of the Letters of Credit upon Default.  If
any Event of Default shall have occurred and be continuing,  the  Administrative
Agent may,  or shall at the request of the  Required  Lenders,  irrespective  of
whether it is taking any of the actions  described in Section 6.01 or otherwise,
make demand upon the  Borrower to, and  forthwith  upon such demand the Borrower
will,  pay to the  Administrative  Agent on behalf of the Lender Parties in same
day funds at the  Administrative  Agent's office designated in such demand,  for
deposit in the L/C Cash  Collateral  Account,  an amount equal to the  aggregate
Available Amount of all Letters of Credit then  outstanding.  If at any time the
Administrative  Agent  determines that any funds held in the L/C Cash Collateral
Account  are  subject  to any  right  or  claim  of any  Person  other  than the
Administrative  Agent and the Lender  Parties  or that the total  amount of such
funds is less than the aggregate  Available Amount of all Letters of Credit, the
Borrower will,  forthwith upon demand by the  Administrative  Agent,  pay to the
Administrative  Agent,  as additional  funds to be deposited and held in the L/C
Cash  Collateral  Account,  an amount equal to the excess of (a) such  aggregate
Available  Amount over (b) the  total amount of funds,  if any, then held in the
L/C Cash Collateral Account that the Administrative  Agent determines to be free
and clear of any such right and claim.


                                  ARTICLE VII

                           The Administrative Agent

     SECTION  7.01.   Authorization  and  Action.  Each  Lender  Party  (in  its
capacities as a Lender, the Swing Line Bank (if applicable) the Issuing Bank (if
applicable)  and a potential  Hedge Bank)  hereby  appoints and  authorizes  the
Administrative  Agent to take such action as agent on its behalf and to exercise
such powers and discretion  under this Agreement and the other Loan Documents as
are  delegated  to the  Administrative  Agent by the terms  hereof and  thereof,
together with such powers and discretion as are reasonably  incidental  thereto.
As to any matters not expressly  provided for by the Loan Documents  (including,
without limitation,  enforcement or collection of the Notes), the Administrative
Agent shall not be required to exercise any  discretion or take any action,  but
shall be required to act or to refrain from acting (and shall be fully protected
in so acting or refraining  from acting) upon the  instructions  of the Required
Lenders,  and such instructions shall be binding upon all Lender Parties and all
holders of Notes; provided,  however, that the Administrative Agent shall not be
required to take any action that  exposes the  Administrative  Agent to personal
liability  or  that is  contrary  to  this  Agreement  or  applicable  law.  The
Administrative  Agent agrees to give to each Lender Party prompt  notice of each
notice given to it by the Borrower pursuant to the terms of this Agreement.



     SECTION  7.02.   Administrative   Agent's   Reliance,   Etc.   Neither  the
Administrative  Agent nor any of its  directors,  officers,  agents or employees
shall be liable for any action  taken or omitted to be taken by it or them under
or in  connection  with the Loan  Documents,  except  for its or their own gross
negligence or willful  misconduct.  Without  limitation of the generality of the
foregoing,  the Administrative Agent: (a) may treat the payee of any Note as the
holder thereof until the Administrative Agent receives and accepts an Assignment
and  Acceptance  entered  into by the Lender that is the payee of such Note,  as
assignor,  and an Eligible Assignee,  as assignee,  as provided in Section 8.07;
(b) may  consult  with legal  counsel  (including  counsel for any Loan  Party),
independent public accountants and other experts selected by it and shall not be
liable  for any  action  taken or  omitted  to be  taken in good  faith by it in
accordance with the advice of such counsel, accountants or experts; (c) makes no
warranty or  representation  to any Lender Party and shall not be responsible to
any Lender Party for any  statements,  warranties  or  representations  (whether
written or oral) made in or in connection with the Loan Documents; (d) shall not
have any duty to ascertain or to inquire as to the  performance or observance of
any of the terms,  covenants or  conditions  of any Loan Document on the part of
any Loan Party or to inspect the property  (including  the books and records) of
any Loan Party;  (e) shall  not be  responsible  to any Lender Party for the due
execution, legality, validity, enforceability, genuineness, sufficiency or value
of, or the  perfection or priority of any lien or security  interest  created or
purported to be created  under or in connection  with,  any Loan Document or any
other instrument or document furnished pursuant thereto;  and (f) shall incur no
liability  under or in respect of any Loan  Document  by acting upon any notice,
consent,  certificate or other  instrument or writing (which may be by telegram,
telecopy or telex) believed by it to be genuine and signed or sent by the proper
party or parties.

     SECTION 7.03. Fleet and Affiliates.  With respect to its  Commitments,  the
Advances made by it and the Notes issued to it, Fleet shall have the same rights
and powers  under the Loan  Documents as any other Lender Party and may exercise
the same as though it were not the  Administrative  Agent;  and the term "Lender
Party" or "Lenders Parties" shall, unless otherwise expressly indicated, include
Fleet in its individual  capacity.  Fleet and its affiliates may accept deposits
from,  lend money to, act as trustee  under  indentures  of,  accept  investment
banking  engagements from and generally engage in any kind of business with, any
Loan Party,  any of its  Subsidiaries and any Person who may do business with or
own  securities of any Loan Party or any such  Subsidiary,  all as if Fleet were
not the  Administrative  Agent and without  any duty to account  therefor to the
Lender Parties.

     SECTION 7.04. Lender Party Credit Decision.  Each Lender Party acknowledges
that it has, independently and without reliance upon the Administrative Agent or
any other  Lender  Party and based on the  financial  statements  referred to in
Section 4.01  and  such  other  documents  and  information  as  it  has  deemed
appropriate,  made its own  credit  analysis  and  decision  to enter  into this
Agreement.  Each Lender Party also acknowledges that it will,  independently and
without  reliance  upon the  Administrative  Agent or any other Lender Party and
based on such  documents and  information  as it shall deem  appropriate  at the
time,  continue to make its own credit  decisions in taking or not taking action
under this Agreement.

     SECTION 7.05.  Indemnification.  (a) Each Lender Party severally  agrees to
indemnify the Administrative Agent (to the extent not promptly reimbursed by the



Borrower)  from and against such Lender  Party's  ratable share  (determined  as
provided  below)  of any  and all  liabilities,  obligations,  losses,  damages,
penalties,  actions,  judgments,  suits, costs, expenses or disbursements of any
kind or nature  whatsoever  that may be imposed  on,  incurred  by, or  asserted
against the  Administrative  Agent in any way  relating to or arising out of the
Loan Documents or any action taken or omitted by the Administrative  Agent under
the Loan Documents;  provided, however, that no Lender Party shall be liable for
any  portion  of such  liabilities,  obligations,  losses,  damages,  penalties,
actions,  judgments,  suits, costs, expenses or disbursements resulting from the
Administrative   Agent's  gross  negligence  or  willful   misconduct.   Without
limitation  of  the  foregoing,  each  Lender  Party  agrees  to  reimburse  the
Administrative Agent promptly upon demand for its ratable share of any costs and
expenses (including,  without limitation,  fees and expenses of counsel) payable
by the Borrower under Section 8.04, to the extent that the Administrative  Agent
is not  promptly  reimbursed  for such costs and expenses by the  Borrower.  For
purposes of this Section 7.05(a),  the Lender Parties' respective ratable shares
of any amount shall be determined,  at any time, according to the sum of (a) the
aggregate principal amount of the Advances outstanding at such time and owing to
the  respective  Lender  Parties,  (b) their  respective  Pro Rata Shares of the
aggregate  Available  Amount of all Letters of Credit  outstanding at such time,
(c) the  aggregate  unused portions of their respective  Term A  Commitments and
Term B Commitments at such time and (d) their  respective Unused Working Capital
Commitments at such time;  provided that the aggregate principal amount of Swing
Line  Advances  owing to the Swing  Line  Bank and of Letter of Credit  Advances
owing to the Issuing Bank shall be considered to be owed to the Working  Capital
Lenders ratably in accordance with their respective Working Capital Commitments.
In the event that any Defaulted  Advance shall be owing by any Defaulting Lender
at any time,  such Lender Party's  Commitment with respect to the Facility under
which such Defaulted  Advance was required to have been made shall be considered
to be unused for purposes of this Section 7.05(a) to the extent of the amount of
such  Defaulted  Advance.  The  failure of any  Lender  Party to  reimburse  the
Administrative  Agent  promptly  upon demand for its ratable share of any amount
required to be paid by the Lender Party to the Administrative  Agent as provided
herein shall not relieve any other Lender Party of its  obligation  hereunder to
reimburse the Administrative  Agent for its ratable share of such amount, but no
Lender Party shall be  responsible  for the failure of any other Lender Party to
reimburse the  Administrative  Agent for such other Lender Party's ratable share
of such amount.  Without prejudice to the survival of any other agreement of any
Lender Party  hereunder,  the  agreement  and  obligations  of each Lender Party
contained  in  this  Section 7.05(a)  shall  survive  the  payment  in  full  of
principal,  interest and all other amounts payable hereunder and under the other
Loan Documents.

     (b) Each Lender Party  severally  agrees to indemnify  the Issuing Bank (to
the extent not promptly reimbursed by the Borrower) from and against such Lender
Party's ratable share (determined as provided below) of any and all liabilities,
obligations,  losses,  damages,  penalties,  actions,  judgments,  suits, costs,
expenses or disbursements  of any kind or nature  whatsoever that may be imposed
on, incurred by, or asserted  against the Issuing Bank in any way relating to or
arising out of the Loan  Documents or any action taken or omitted by the Issuing
Bank under the Loan Documents;  provided, however, that no Lender Party shall be
liable  for any  portion  of such  liabilities,  obligations,  losses,  damages,
penalties, actions, judgments, suits, costs, expenses or disbursements resulting
from  the  Issuing  Bank's  gross  negligence  or  willful  misconduct.  Without
limitation of the  foregoing,  each Lender Party agrees to reimburse the Issuing
Bank  promptly  upon  demand  for its  ratable  share of any costs and  expenses



(including,  without  limitation,  fees and expenses of counsel)  payable by the
Borrower under Section 8.04, to the extent that the Issuing Bank is not promptly
reimbursed  for such costs and  expenses by the  Borrower.  For purposes of this
Section  7.05(b),  the Lender Parties'  respective  ratable shares of any amount
shall be  determined,  at any time,  according  to the sum of (a) the  aggregate
principal  amount  of the  Advances  outstanding  at such  time and owing to the
respective Lender Parties, (b) their respective Pro Rata Shares of the aggregate
Available  Amount of all  Letters of Credit  outstanding  at such time,  (c) the
aggregate  unused  portions of their  respective  Term A Commitments  and Term B
Commitments  at such time  plus  (d) their  respective  Unused  Working  Capital
Commitments at such time;  provided that the aggregate principal amount of Swing
Line  Advances  owing to the Swing  Line  Bank and of Letter of Credit  Advances
owing to the Issuing Bank shall be considered to be owed to the Working  Capital
Lenders ratably in accordance with their respective Working Capital Commitments.
In the event that any Defaulted  Advance shall be owing by any Defaulting Lender
at any time,  such Lender Party's  Commitment with respect to the Facility under
which such Defaulted  Advance was required to have been made shall be considered
to be unused for purposes of this Section 7.05(b) to the extent of the amount of
such Defaulted Advance. The failure of any Lender Party to reimburse the Issuing
Bank  promptly  upon demand for its ratable  share of any amount  required to be
paid by the Lender  Parties to the  Issuing  Bank as provided  herein  shall not
relieve any other Lender  Party of its  obligation  hereunder  to reimburse  the
Issuing Bank for its ratable share of such amount,  but no Lender Party shall be
responsible  for the failure of any other Lender Party to reimburse  the Issuing
Bank for such  other  Lender  Party's  ratable  share  of such  amount.  Without
prejudice to the survival of any other agreement of any Lender Party  hereunder,
the  agreement  and   obligations  of  each  Lender  Party   contained  in  this
Section 7.05(b) shall survive the payment in full of principal, interest and all
other amounts payable hereunder and under the other Loan Documents.

     SECTION 7.06. Successor Administrative Agents. The Administrative Agent may
resign as to any or all of the  Facilities at any time by giving  written notice
thereof to the Lender  Parties and the  Borrower and may be removed as to all of
the Facilities at any time with or without cause by the Required  Lenders.  Upon
any such  resignation or removal,  the Required  Lenders shall have the right to
appoint a  successor  Administrative  Agent as to such of the  Facilities  as to
which the  Administrative  Agent has resigned or been  removed.  If no successor
Administrative  Agent shall have been so appointed by the Required Lenders,  and
shall  have  accepted  such  appointment,  within  30 days  after  the  retiring
Administrative  Agent's giving of notice of resignation or the Required Lenders'
removal of the retiring  Administrative Agent, then the retiring  Administrative
Agent may, on behalf of the Lender Parties,  appoint a successor  Administrative
Agent,  which shall be a commercial  bank organized under the laws of the United
States or of any State  thereof and having a combined  capital and surplus of at
least  $250,000,000.  Upon the acceptance of any  appointment as  Administrative
Agent hereunder by a successor  Administrative Agent as to all of the Facilities
and upon the execution and filing or recording of such financing statements,  or
amendments  thereto,  and such  amendments or supplements to the Mortgages,  and
such other instruments or notices,  as may be necessary or desirable,  or as the
Required  Lenders may request,  in order to continue the perfection of the Liens
granted or purported to be granted by the Collateral  Documents,  such successor
Administrative  Agent  shall  succeed to and become  vested with all the rights,
powers, discretion,  privileges and duties of the retiring Administrative Agent,
and the retiring  Administrative  Agent shall be discharged  from its duties and
obligations under the Loan Documents.  Upon the acceptance of any appointment as
Administrative  Agent hereunder by a successor  Administrative  Agent as to less



than all of the  Facilities  and upon the  execution  and filing or recording of
such  financing  statements,  or  amendments  thereto,  and such  amendments  or
supplements to the Mortgages,  and such other instruments or notices,  as may be
necessary  or  desirable,  or as the Required  Lenders may request,  in order to
continue the  perfection  of the Liens granted or purported to be granted by the
Collateral Documents,  such successor  Administrative Agent shall succeed to and
become vested with all the rights, powers, discretion,  privileges and duties of
the retiring Administrative Agent as to such Facilities, other than with respect
to funds transfers and other similar aspects of the administration of Borrowings
under such  Facilities,  issuances  of Letters  of Credit  (notwithstanding  any
resignation  as  Administrative  Agent  with  respect  to the  Letter  of Credit
Facility)  and payments by the Borrower in respect of such  Facilities,  and the
retiring   Administrative   Agent  shall  be  discharged  from  its  duties  and
obligations under this Agreement as to such Facilities, other than as aforesaid.
After any retiring  Administrative  Agent's  resignation or removal hereunder as
Administrative  Agent  as to all of  the  Facilities,  the  provisions  of  this
Article VII  shall inure to its benefit as to any actions taken or omitted to be
taken by it while it was  Administrative  Agent as to any Facilities  under this
Agreement.


                                 ARTICLE VIII

                                 MISCELLANEOUS

     SECTION 8.01.  Amendments,  Etc. No amendment or waiver of any provision of
this  Agreement  or the Notes or any other  Loan  Document,  nor  consent to any
departure by the Borrower therefrom,  shall in any event be effective unless the
same  shall  be in  writing  and  signed  (or,  in the  case  of the  Collateral
Documents,  consented  to) by the  Required  Lenders,  and then  such  waiver or
consent  shall be effective  only in the specific  instance and for the specific
purpose for which given;  provided,  however,  that (a) no amendment,  waiver or
consent  shall,  unless in writing and signed by all of the Lenders  (other than
any Lender  Party that is, at such time,  a  Defaulting  Lender),  do any of the
following at any time: (i) waive any of the conditions specified in Section 3.01
or, in the case of the Initial  Extension of Credit,  Section 3.02,  (ii) change
the  number  of  Lenders  or the  percentage  of (x)  the  Commitments,  (y) the
aggregate unpaid principal amount of the Advances or (z) the aggregate Available
Amount of  outstanding  Letters of Credit that, in each case,  shall be required
for the  Lenders or any of them to take any action  hereunder,  (iii) reduce  or
limit the  obligations  of the  Guarantor  under  Section 1 of the  Guaranty  or
otherwise limit the Guarantor's  liability with respect to the Obligations owing
to the  Administrative  Agent and the Lender Parties,  (iv) release any material
portion of the Collateral in any  transaction or series of related  transactions
or permit the creation,  incurrence,  assumption or existence of any Lien on any
material  portion  of the  Collateral  in any  transaction  or series of related
transactions  to secure  any  Obligations  other than  Obligations  owing to the
Secured  Parties under the Loan Documents and other than Debt owing to any other
Person,  provided  that, in the case of any Lien on any material  portion of the
Collateral to secure Debt owing to any other Person,  (A) the Borrower shall, on
the date such Debt shall be incurred or issued, prepay the Advances pursuant to,
and in the order of priority set forth in,  Section 2.06(b)(ii)  in an aggregate
principal  amount  equal to the amount of such Net Cash  Proceeds  to the extent
required to do so under Section 2.06(b)(ii), (B) such Lien shall be subordinated
to the  Liens  created  under  the Loan  Documents  on terms  acceptable  to the
Required  Lenders  and (C) the  Required  Lenders  shall  otherwise  permit  the
creation,  incurrence,  assumption  or existence of such Lien and, to the extent



not otherwise  permitted  under  Section 5.02(b),  of such Debt,  (v) amend this
Section 8.01,  or  (vi) limit  the  liability of any Loan Party under any of the
Loan Documents and (b) no amendment,  waiver or consent shall, unless in writing
and signed by the Required  Lenders and each Lender that has a Commitment  under
the Term A Facility,  Term B Facility or Working Capital Facility if affected by
such amendment,  waiver or consent,  (i) increase the Commitments of such Lender
or subject such Lender to any additional obligations,  (ii) reduce the principal
of, or interest  on, the Notes held by such Lender or any fees or other  amounts
payable hereunder to such Lender,  (iii) postpone any date fixed for any payment
of  principal  of, or interest  on, the Notes held by such Lender or any fees or
other  amounts  payable  hereunder  to such  Lender or (iv)  change the order of
application  of any  prepayment  set forth in Section  2.06 in any  manner  that
materially  affects such Lender;  provided further that no amendment,  waiver or
consent  shall,  unless in  writing  and  signed  by the Swing  Line Bank or the
Issuing Bank, as the case may be, in addition to the Lenders  required  above to
take such action, affect the rights or obligations of the Swing Line Bank or the
Issuing Bank,  as the case may be, under this  Agreement;  and provided  further
that no amendment,  waiver or consent shall, unless in writing and signed by the
Administrative  Agent in  addition to the  Lenders  required  above to take such
action,  affect  the  rights or duties of the  Administrative  Agent  under this
Agreement.

     SECTION 8.02. Notices,  Etc. All notices and other communications  provided
for  hereunder  shall be in writing  (including  telegraphic,  telecopy or telex
communication) and mailed, telegraphed,  telecopied, telexed or delivered, if to
the  Borrower,  at its  address at 675 Basket  Road,  Webster,  New York  14580,
Attention:  William J.  Woodard;  if to PSC, at its address at 675 Basket  Road,
Webster, New York 14580, Attention: William J. Woodard; if to any Initial Lender
or the Initial Issuing Bank, at its Domestic Lending Office  specified  opposite
its name on Schedule I  hereto;  if to any other Lender  Party,  at its Domestic
Lending Office  specified in the Assignment and Acceptance  pursuant to which it
became a Lender Party; and if to the Administrative Agent, at its address at One
East Avenue,  Rochester, New York 14638, Attention:  Jeffrey Kenefick; or, as to
the  Borrower or the  Administrative  Agent,  at such other  address as shall be
designated  by such party in a written  notice to the other  parties  and, as to
each other party,  at such other address as shall be designated by such party in
a written notice to the Borrower and the Administrative  Agent. All such notices
and  communications  shall,  when  mailed  by  certified  mail,  return  receipt
requested;  telegraphed,  telecopied  or  telexed,  be  effective  3 days  after
mailing, upon delivery to the telegraph company, upon transmission by telecopier
or upon confirmation by telex answerback,  respectively, except that notices and
communications to the  Administrative  Agent pursuant to Article II,  III or VII
shall not be effective until received by the Administrative  Agent.  Delivery by
telecopier  of an  executed  counterpart  of  any  amendment  or  waiver  of any
provision of this Agreement or the Notes or of any Exhibit hereto to be executed
and delivered  hereunder  shall be effective as delivery of a manually  executed
counterpart thereof.

     SECTION  8.03.  No Waiver;  Remedies.  No failure on the part of any Lender
Party or the Administrative Agent to exercise,  and no delay in exercising,  any
right hereunder or under any Note shall operate as a waiver  thereof;  nor shall
any single or partial  exercise of any such right  preclude any other or further
exercise  thereof  or the  exercise  of any other  right.  The  remedies  herein
provided are cumulative and not exclusive of any remedies provided by law.



     SECTION 8.04. Costs and Expenses.  (a) The Borrower agrees to pay on demand
(i) all costs and expenses of the  Administrative  Agent and the Co-Arrangers in
connection   with  the   preparation,   execution,   delivery,   administration,
modification and amendment of the Loan Documents (including, without limitation,
(A)all due diligence,  collateral  review,  syndication,  (including  printing,
distribution   and  bank  meetings)   transportation,   computer,   duplication,
appraisal, audit, insurance,  consultant,  search, filing and recording fees and
expenses,  and  (B)  the  reasonable  fees  and  expenses  of  counsel  for  the
Administrative Agent and the Co-Arrangers with respect thereto,  with respect to
advising the Administrative Agent as to its rights and responsibilities,  or the
perfection,  protection or preservation  of rights or interests,  under the Loan
Documents,  with  respect  to  negotiations  with any Loan  Party or with  other
creditors  of any  Loan  Party  or any of its  Subsidiaries  arising  out of any
Default or any events or circumstances  that may give rise to a Default and with
respect to presenting claims in or otherwise  participating in or monitoring any
bankruptcy,  insolvency or other similar proceeding  involving creditors' rights
generally and any proceeding  ancillary thereto) and (ii) all costs and expenses
of the  Administrative  Agent and the  Lender  Parties  in  connection  with the
enforcement of the Loan  Documents,  whether in any action,  suit or litigation,
any  bankruptcy,  insolvency or other similar  proceeding  affecting  creditors'
rights  generally  (including,  without  limitation,  the  reasonable  fees  and
expenses of counsel  for the  Administrative  Agent and each  Lender  Party with
respect thereto).

     (b) The Borrower  agrees to indemnify and hold harmless the  Administrative
Agent,  the  Co-Arrangers,  each Lender Party and each of their  Affiliates  and
their officers, directors, employees, agents and advisors (each, an "Indemnified
Party") from and against any and all claims,  damages,  losses,  liabilities and
expenses  (including,  without  limitation,  reasonable  fees  and  expenses  of
counsel) that may be incurred by or asserted or awarded  against any Indemnified
Party,  in each case arising out of or in connection with or by reason of, or in
connection with the preparation for a defense of, any investigation,  litigation
or  proceeding  arising  out  of,  related  to or in  connection  with  (i)  the
Facilities,  the actual or proposed  use of the  proceeds of the Advances or the
Letters of Credit by the Borrower or any of its subsidiaries or other affiliates
and any of the other  transaction  contemplated by the Loan Documents,  (ii) any
acquisition or proposed  acquisition or similar business combination or proposed
business  combination  by PSC or the  Borrower or any of their  subsidiaries  or
affiliates of all or any portion of the shares of capital stock or substantially
all of the property and assets of any other person, (iii) the Facilities and any
use made or proposed to be made with the proceeds  thereof or (iv) the actual or
alleged presence of Hazardous Materials on any property of any Loan Party or any
of its Subsidiaries or any Environmental  Action relating in any way to any Loan
Party  or  any  of  its   Subsidiaries,   in  each  case  whether  or  not  such
investigation,  litigation  or  proceeding  is  brought by any Loan  Party,  its
directors,  shareholders or creditors or an Indemnified Party or any Indemnified
Party  is  otherwise  a  party  thereto  and  whether  or not  the  transactions
contemplated  hereby are consummated,  except to the extent such claim,  damage,
loss,  liability  or expense is found in a final,  non-appealable  judgment by a
court of competent  jurisdiction to have resulted from such Indemnified  Party's
gross negligence or willful  misconduct.  The Borrower also agrees not to assert
any claim  against the  Administrative  Agent,  any Lender Party or any of their
Affiliates, or any of their respective officers, directors, employees, attorneys
and agents, on any theory of liability, for special, indirect,  consequential or
punitive  damages arising out of or otherwise  relating to the  Facilities,  the
actual or proposed use of the proceeds of the Advances or the Letters of Credit,
the Loan Documents or any of the transactions contemplated thereby.



     (c) If any payment of principal of, or Conversion of, any  Eurodollar  Rate
Advance is made by the  Borrower to or for the  account of a Lender  Party other
than on the last day of the Interest  Period for such Advance,  as a result of a
payment or Conversion pursuant to Section 2.09(b)(i) or 2.10(d), acceleration of
the maturity of the Notes pursuant to Section 6.01  or for any other reason,  or
by an  Eligible  Assignee  to a Lender  Party  other than on the last day of the
Interest  Period for such Advance upon an assignment  of rights and  obligations
under this  Agreement  pursuant  to Section  8.07 as a result of a demand by the
Borrower  pursuant to  Section 8.07(a),  the Borrower shall, upon demand by such
Lender Party (with a copy of such demand to the  Administrative  Agent),  pay to
the  Administrative  Agent for the  account  of such  Lender  Party any  amounts
required to compensate  such Lender Party for any  additional  losses,  costs or
expenses that it may  reasonably  incur as a result of such payment,  including,
without limitation,  any loss (including loss of anticipated  profits),  cost or
expense  incurred by reason of the  liquidation or  reemployment  of deposits or
other funds acquired by any Lender Party to fund or maintain such Advance.

     (d) If any Loan Party  fails to pay when due any costs,  expenses  or other
amounts payable by it under any Loan Document,  including,  without  limitation,
fees and expenses of counsel and indemnities,  such amount may be paid on behalf
of such Loan Party by the Administrative  Agent or any Lender Party, in its sole
discretion.

     (e) Without  prejudice to the  survival of any other  agreement of any Loan
Party hereunder or under any other Loan Document, the agreements and obligations
of the Borrower  contained in Sections 2.10 and 2.12 and this Section 8.04 shall
survive the payment in full of principal, interest and all other amounts payable
hereunder and under any of the other Loan Documents.


     SECTION  8.05.  Right of Set-off.  Upon (a) the  occurrence  and during the
continuance  of any Event of Default  and (b) the  making of the  request or the
granting  of  the  consent   specified  by  Section   6.01  to   authorize   the
Administrative  Agent to  declare  the Notes  due and  payable  pursuant  to the
provisions  of  Section  6.01,  each  Lender  Party  and each of its  respective
Affiliates  is  hereby  authorized  at any time and  from  time to time,  to the
fullest  extent  permitted  by law, to set off and  otherwise  apply any and all
deposits (general or special, time or demand,  provisional or final) at any time
held and  other  indebtedness  at any time  owing by such  Lender  Party or such
Affiliate  to or for the credit or the account of the  Borrower  against any and
all of the  Obligations  of the Borrower now or  hereafter  existing  under this
Agreement and the Note or Notes (if any) held by such Lender Party, irrespective
of whether such Lender Party shall have made any demand under this  Agreement or
such Note or Notes and although such  obligations may be unmatured.  Each Lender
Party  agrees  promptly  to  notify  the  Borrower  after any such  set-off  and
application;  provided,  however, that the failure to give such notice shall not
affect the validity of such set-off and  application.  The rights of each Lender
Party and its respective  Affiliates under this Section are in addition to other
rights and remedies  (including,  without  limitation,  other rights of set-off)
that such Lender Party and its respective Affiliates may have.

     SECTION 8.06. Binding Effect. This Agreement shall become effective when it
shall have been executed by the Borrower and the  Administrative  Agent and when
the Administrative Agent shall have been notified by each Initial Lender and the
Initial  Issuing Bank that such Initial Lender and the Initial  Issuing Bank has
executed it and thereafter shall be binding upon and inure to the benefit of the
Borrower,  the  Administrative  Agent and each Lender Party and their respective
successors  and assigns,  except that the  Borrower  shall not have the right to
assign its rights  hereunder or any interest  herein  without the prior  written
consent of the Lender Parties.

     SECTION 8.07. Assignments and Participations. (a) Each Lender may assign to
one or more Eligible  Assignees  all or a portion of its rights and  obligations
under this Agreement  (including,  without  limitation,  all or a portion of its
Commitment or  Commitments,  the Advances owing to it and the Note or Notes held
by it); provided,  however, that (i) each such assignment shall be of a uniform,
and not a varying, percentage of all rights and obligations under and in respect
of one or more Facilities,  (ii) except in the case of an assignment to a Person
that, immediately prior to such assignment, was a Lender or an assignment of all
of a Lender's  rights and obligations  under this  Agreement,  the amount of the
Commitment  of the  assigning  Lender  being  assigned  pursuant  to  each  such
assignment  (determined as of the date of the  Assignment  and  Acceptance  with
respect to such  assignment)  shall in no event be less than  $5,000,000,  (iii)
each such assignment shall be to an Eligible Assignee,  (iv) no such assignments
shall be  permitted  without the consent of the  Administrative  Agent until the
Administrative  Agent shall have notified the Lender Parties that syndication of
the Commitments  hereunder has been completed,  (V) no such assignment  shall be
permitted if,  immediately  after giving effect  thereto,  the Borrower would be
required to make payments to or on behalf of the assignee  Lender Party pursuant
to Section  2.10(a) or (b) and the assignor  Lender Party was not at the time of
such assignment,  entitled to receive any payment pursuant to Section 2.10(a) or
(b), and (vi) the parties to each such  assignment  shall execute and deliver to
the Administrative  Agent, for its acceptance and recording in the Register,  an
Assignment  and  Acceptance,  together  with any Note or Notes  subject  to such
assignment and a processing and recordation fee of $3,000.

     (b) Upon such execution, delivery, acceptance and recording, from and after
the effective date specified in such Assignment and Acceptance, (x) the assignee
thereunder  shall  be a  party  hereto  and,  to  the  extent  that  rights  and
obligations  hereunder have been assigned to it pursuant to such  Assignment and
Acceptance,  have the rights and obligations of a Lender or Issuing Bank, as the
case may be,  hereunder and (y) the  Lender or Issuing Bank assignor  thereunder
shall, to the extent that rights and obligations hereunder have been assigned by
it pursuant to such  Assignment  and  Acceptance,  relinquish  its rights and be
released  from its  obligations  under this  Agreement  (and,  in the case of an
Assignment and Acceptance  covering all or the remaining portion of an assigning
Lender's or Issuing Bank's rights and  obligations  under this  Agreement,  such
Lender or Issuing Bank shall cease to be a party hereto).

     (c) By executing and  delivering an Assignment and  Acceptance,  the Lender
Party assignor  thereunder and the assignee thereunder confirm to and agree with
each other and the other parties  hereto as follows:  (i) other than as provided
in such  Assignment  and  Acceptance,  such  assigning  Lender  Party  makes  no
representation  or warranty  and assumes no  responsibility  with respect to any
statements,  warranties or  representations  made in or in connection  with this
Agreement  or any other Loan  Document  or the  execution,  legality,  validity,
enforceability,  genuineness,  sufficiency  or value  of, or the  perfection  or
priority of any lien or security  interest  created or  purported  to be created



under or in connection  with,  this  Agreement or any other Loan Document or any
other  instrument or document  furnished  pursuant hereto or thereto;  (ii) such
assigning  Lender  Party  makes no  representation  or  warranty  and assumes no
responsibility  with respect to the  financial  condition of the Borrower or any
other Loan Party or the  performance  or  observance by any Loan Party of any of
its  obligations  under any Loan  Document or any other  instrument  or document
furnished pursuant thereto;  (iii) such assignee confirms that it has received a
copy of  this  Agreement,  together  with  copies  of the  financial  statements
referred to in  Section 4.01  and such other documents and information as it has
deemed  appropriate  to make its own credit  analysis and decision to enter into
such  Assignment and  Acceptance;  (iv) such  assignee will,  independently  and
without reliance upon the  Administrative  Agent, such assigning Lender Party or
any other Lender Party and based on such  documents and  information as it shall
deem  appropriate  at the time,  continue  to make its own credit  decisions  in
taking or not taking action under this  Agreement;  (v) such  assignee  confirms
that it is an Eligible Assignee;  (vi) such assignee appoints and authorizes the
Administrative  Agent to take such action as agent on its behalf and to exercise
such powers and  discretion  under the Loan  Documents  as are  delegated to the
Administrative  Agent  by the  terms  hereof,  together  with  such  powers  and
discretion as are reasonably  incidental thereto; and (vii) such assignee agrees
that it will perform in accordance with their terms all of the obligations which
by the terms of this Agreement are required to be performed by it as a Lender or
Issuing Bank, as the case may be.

     (d) The  Administrative  Agent shall maintain at its address referred to in
Section 8.02 a copy of each Assignment and Acceptance  delivered to and accepted
by it and a  register  for the  recordation  of the names and  addresses  of the
Lender Parties and the Commitment  under each Facility of, and principal  amount
of the  Advances  owing under each  Facility  to, each Lender Party from time to
time (the  "Register").  The entries in the  Register  shall be  conclusive  and
binding  for  all  purposes,  absent  manifest  error,  and  the  Borrower,  the
Administrative  Agent and the Lender Parties may treat each Person whose name is
recorded in the  Register as a Lender Party  hereunder  for all purposes of this
Agreement. The Register shall be available for inspection by the Borrower or any
Lender Party at any reasonable time and from time to time upon reasonable  prior
notice.

     (e) Upon  its  receipt  of an  Assignment  and  Acceptance  executed  by an
assigning Lender Party and an assignee,  together with any Note or Notes subject
to such  assignment,  the  Administrative  Agent shall,  if such  Assignment and
Acceptance  has been  completed  and is in  substantially  the form of Exhibit C
hereto,  (i) accept such Assignment and Acceptance,  (ii) record the information
contained  therein in the Register and (iii) give prompt  notice  thereof to the
Borrower.  In the case of any assignment by a Lender,  within five Business Days
after its  receipt of such  notice,  the  Borrower,  at its own  expense,  shall
execute and deliver to the Administrative  Agent in exchange for the surrendered
Note or Notes a new Note to the  order of such  Eligible  Assignee  in an amount
equal  to the  Commitment  assumed  by it  under  a  Facility  pursuant  to such
Assignment and Acceptance and, if the assigning Lender has retained a Commitment
hereunder under such Facility,  a new Note to the order of the assigning  Lender
in an amount equal to the Commitment retained by it hereunder.  Such new Note or
Notes shall be in an aggregate principal amount equal to the aggregate principal
amount of such surrendered  Note or Notes,  shall be dated the effective date of
such Assignment and Acceptance and shall otherwise be in substantially  the form
of Exhibit A-1, A-2 or A-3 hereto, as the case may be.



          (f) The  Issuing  Bank may assign to an Eligible  Assignee  all of its
     rights and  obligations  under the undrawn  portion of its Letter of Credit
     Commitment at any time;  provided,  however,  that (i) each such assignment
     shall  be to an  Eligible  Assignee  and  (ii)  the  parties  to each  such
     assignment shall execute and deliver to the  Administrative  Agent, for its
     acceptance  and recording in the Register,  an Assignment  and  Acceptance,
     together with a processing and recordation fee of $3,000.

          (g) Each Lender Party may sell  participations  to one or more Persons
     (other  than any Loan  Party  or any of its  Affiliates)  in or to all or a
     portion of its  rights and  obligations  under this  Agreement  (including,
     without limitation, all or a portion of its Commitments, the Advances owing
     to it and the Note or Notes (if any) held by it); provided,  however,  that
     (i) such  Lender  Party's  obligations  under  this  Agreement  (including,
     without  limitation,  its Commitments)  shall remain  unchanged,  (ii) such
     Lender Party shall remain solely  responsible  to the other parties  hereto
     for the  performance  of such  obligations,  (iii) such  Lender Party shall
     remain the holder of any such Note for all purposes of this Agreement, (iv)
     the Borrower,  the Administrative  Agent and the other Lender Parties shall
     continue to deal solely and directly  with such Lender Party in  connection
     with such Lender  Party's rights and  obligations  under this Agreement and
     (v) no  participant  under any such  participation  shall have any right to
     approve any amendment or waiver of any provision of any Loan  Document,  or
     any consent to any  departure  by any Loan Party  therefrom,  except to the
     extent that such  amendment,  waiver or consent  would reduce the principal
     of,  or  interest  on,  the  Notes  or any fees or  other  amounts  payable
     hereunder,  in  each  case to the  extent  subject  to such  participation,
     postpone  any date fixed for any payment of  principal  of, or interest on,
     the Notes or any fees or other amounts payable  hereunder,  in each case to
     the extent subject to such  participation,  or release all or substantially
     all of the Collateral.

          (h) Any  Lender  Party  may,  in  connection  with any  assignment  or
     participation  or proposed  assignment  or  participation  pursuant to this
     Section 8.07,  disclose to the assignee or participant or proposed assignee
     or participant,  any information relating to the Borrower furnished to such
     Lender  Party by or on behalf of the  Borrower;  provided,  however,  that,
     prior to any such  disclosure,  the  assignee  or  participant  or proposed
     assignee or participant shall agree to preserve the  confidentiality of any
     Confidential Information received by it from such Lender Party.

          (i)  Notwithstanding  any other provision set forth in this Agreement,
     any Lender  Party may at any time create a security  interest in all or any
     portion of its rights under this Agreement (including,  without limitation,
     the Advances  owing to it and the Note or Notes held by it) in favor of any
     Federal  Reserve  Bank in  accordance  with  Regulation A  of the  Board of
     Governors of the Federal Reserve System.

     SECTION 8.08. Execution in Counterparts.  This Agreement may be executed in
any  number  of  counterparts  and  by  different  parties  hereto  in  separate
counterparts,  each of which when so executed  shall be deemed to be an original
and all of which taken  together shall  constitute  one and the same  agreement.
Delivery of an executed  counterpart  of a signature  page to this  Agreement by
telecopier shall be effective as delivery of a manually executed  counterpart of
this Agreement.


     SECTION 8.09. No Liability of the Issuing  Bank.  The Borrower  assumes all
risks of the acts or omissions of any beneficiary or transferee of any Letter of
Credit  with  respect to its use of such  Letter of Credit.  Neither the Issuing
Bank nor any of its officers or directors  shall be liable or  responsible  for:
(a) the use that may be made of any Letter of Credit or any acts or omissions of
any  beneficiary  or  transferee  in  connection  therewith;  (b) the  validity,
sufficiency or genuineness of documents,  or of any endorsement thereon, even if
such documents should prove to be in any or all respects invalid,  insufficient,
fraudulent or forged;  (c) payment by the Issuing Bank against  presentation  of
documents  that do not comply  with the terms of a Letter of  Credit,  including
failure of any  documents  to bear any  reference  or adequate  reference to the
Letter of Credit; or (d) any other circumstances whatsoever in making or failing
to make payment under any Letter of Credit,  except that the Borrower shall have
a claim  against the Issuing  Bank,  and the Issuing Bank shall be liable to the
Borrower,  to the extent of any direct, but not consequential,  damages suffered
by the Borrower that the Borrower  proves were caused by (i) the Issuing  Bank's
willful  misconduct  or  gross  negligence  in  determining   whether  documents
presented  under any  Letter of Credit  comply  with the terms of the  Letter of
Credit or (ii) the Issuing Bank's willful failure to make lawful payment under a
Letter  of  Credit  after the  presentation  to it of a draft  and  certificates
strictly  complying  with the terms and  conditions of the Letter of Credit.  In
furtherance and not in limitation of the foregoing,  the Issuing Bank may accept
documents that appear on their face to be in order,  without  responsibility for
further investigation, regardless of any notice or information to the contrary.

     SECTION 8.10.  Confidentiality.  Neither the  Administrative  Agent nor any
Lender Party shall disclose any  Confidential  Information to any Person without
the consent of the  Borrower,  other than (a) to the  Administrative  Agent's or
such Lender Party's Affiliates and their officers, directors,  employees, agents
and advisors and to actual or prospective  Eligible  Assignees and participants,
and then only on a  confidential  basis,  (b) as  required  by any law,  rule or
regulation  or judicial  process and (c) as  requested or required by any state,
federal or foreign authority or examiner regulating banks or banking.

     SECTION  8.11.  Jurisdiction,  Etc. (a)  Each of the parties  hereto hereby
irrevocably and  unconditionally  submits,  for itself and its property,  to the
nonexclusive  jurisdiction  of any New York State court or federal  court of the
United States of America  sitting in New York City, and any appellate court from
any  thereof,  in any action or  proceeding  arising  out of or relating to this
Agreement  or any of the other  Loan  Documents  to which it is a party,  or for
recognition  or  enforcement  of any  judgment,  and each of the parties  hereto
hereby irrevocably and unconditionally  agrees that all claims in respect of any
such action or proceeding may be heard and determined in any such New York State
court or, to the extent  permitted  by law, in such federal  court.  Each of the
parties  hereto  agrees that a final  judgment in any such action or  proceeding
shall be conclusive  and may be enforced in other  jurisdictions  by suit on the
judgment or in any other manner provided by law. Nothing in this Agreement shall
affect  any  right  that any  party may  otherwise  have to bring any  action or
proceeding  relating to this Agreement or any of the other Loan Documents in the
courts of any jurisdiction.

     (b) Each of the parties hereto irrevocably and  unconditionally  waives, to
the fullest  extent it may legally and  effectively do so, any objection that it
may now or  hereafter  have to the  laying  of  venue  of any  suit,  action  or
proceeding arising out of or relating to this Agreement or any of the other Loan



Documents to which it is a party in any New York State or federal court. Each of
the parties hereto hereby irrevocably waives, to the fullest extent permitted by
law, the defense of an  inconvenient  forum to the maintenance of such action or
proceeding in any such court.

     SECTION 8.12. Governing Law. This Agreement and the Notes shall be governed
by, and construed in accordance with, the laws of the State of New York.

     SECTION  8.13.   Waiver  of  Jury  Trial.   Each  of  the   Borrower,   the
Administrative  Agent and the  Lender  Parties  irrevocably  waives all right to
trial  by jury in any  action,  proceeding  or  counterclaim  (whether  based on
contract,  tort or  otherwise)  arising  out of or  relating  to any of the Loan
Documents, the Advances or the actions of the Administrative Agent or any Lender
Party in the negotiation, administration, performance or enforcement thereof.


                                  ARTICLE IX

                                 PSC GUARANTY

     SECTION 9.01. PSC Guaranty.  PSC unconditionally and irrevocably guarantees
(the  undertaking  by PSC under this  Article IX being the "PSC  Guaranty")  the
punctual  payment  when due,  whether at stated  maturity,  by  acceleration  or
otherwise, of all Obligations of each other Loan Party now or hereafter existing
under the Loan Documents,  whether for principal,  interest,  fees, commissions,
expenses or otherwise (such Obligations being the "Guaranteed Obligations"), and
agrees to pay any and all expenses  (including,  without limitation,  reasonable
fees and expenses of counsel) incurred by the Administrative  Agent or any other
Secured Party in enforcing any rights under this PSC Guaranty.  Without limiting
the generality of the  foregoing,  PSC's  liability  shall extend to all amounts
that  constitute  part of the  Guaranteed  Obligations  and would be owed by any
other Loan Party to the  Administrative  Agent or any other  Secured Party under
the Loan Documents but for the fact that they are unenforceable or not allowable
due to the  existence  of a  bankruptcy,  reorganization  or similar  proceeding
involving such other Loan Party.

     SECTION  9.02.  Guaranty  Absolute.  PSC  guarantees  that  the  Guaranteed
Obligations  will be paid  strictly  in  accordance  with the  terms of the Loan
Documents, regardless of any law, regulation or order now or hereafter in effect
in  any  jurisdiction  affecting  any  of  such  terms  or  the  rights  of  the
Administrative  Agent or any other  Secured  Party  with  respect  thereto.  The
Obligations  of PSC under this PSC Guaranty are  independent  of the  Guaranteed
Obligations or any other Obligations of any Loan Party under the Loan Documents,
and a separate  action or actions may be brought and  prosecuted  against PSC to
enforce this PSC Guaranty, irrespective of whether any action is brought against
any other  Loan  Party or  whether  any other  Loan  Party is joined in any such
action or  actions.  The  liability  of PSC  under  this PSC  Guaranty  shall be
absolute,   unconditional  and  irrevocable  irrespective  of,  and  PSC  hereby
irrevocably waives any defenses it may now or hereafter have in any way relating
to, any and all of the following:

          (a) any lack of validity or enforceability of any Loan Document or any
     other agreement or instrument relating thereto;



          (b) any change in the time,  manner or place of payment  of, or in any
     other  term  of,  all or any of the  Guaranteed  Obligations  or any  other
     Obligations  of any Loan  Party  under  the Loan  Documents,  or any  other
     amendment or waiver of or any consent to departure  from any Loan  Document
     (including,  without limitation, any increase in the Guaranteed Obligations
     resulting from the extension of additional  credit to any Loan Party or any
     of its Subsidiaries or otherwise);

          (c) any taking, exchange,  release or nonperfection of any Collateral,
     or any taking,  release or  amendment  or waiver of or consent to departure
     from any other guarantee, for all or any of the Guaranteed Obligations;

          (d) any manner of application of Collateral,  or proceeds thereof,  to
     all or any of the  Guaranteed  Obligations,  or any manner of sale or other
     disposition of any Collateral for all or any of the Guaranteed  Obligations
     or any other Obligations of any Loan Party under the Loan Documents, or any
     other  property  and  assets  of  any  other  Loan  Party  or  any  of  its
     Subsidiaries;

          (e)  any  change,   restructuring  or  termination  of  the  corporate
     structure or existence of any other Loan Party or any of its Subsidiaries;

          (f) any failure of any Secured Party to disclose to any Loan Party any
     information relating to the financial condition, operations,  properties or
     prospects  of any other Loan Party now or  hereafter  known to such Secured
     Party; or

          (g) any other circumstance (including, without limitation, any statute
     of limitations or any existence of or reliance on any representation by the
     Administrative  Agent or any other  Secured  Party)  that  might  otherwise
     constitute a defense available to, or a discharge of, any other Loan Party,
     PSC or any other guarantor or surety.

This PSC Guaranty shall  continue to be effective or be reinstated,  as the case
may be,  if at any time any  payment  of any of the  Guaranteed  Obligations  is
rescinded or must otherwise be returned by the Administrative Agent or any other
Secured  Party  or by any  other  Person  upon  the  insolvency,  bankruptcy  or
reorganization of any other Loan Party or otherwise,  all as though such payment
had not been made.

     SECTION 9.03. Waivers and Acknowledgments.  (a) PSC hereby  unconditionally
and irrevocably waives promptness, diligence, notice of acceptance and any other
notice with respect to any of the Guaranteed  Obligations and this PSC Guaranty,
and any  requirement  that the PSC Guaranty or any other Secured Party  protect,
secure,  perfect or insure any Lien or any property or assets subject thereto or
exhaust  any right or take any action  against any other Loan Party or any other
Person or any Collateral.

     (b) PSC hereby  unconditionally and irrevocably waives any duty on the part
of the  Administrative  Agent or any other  Secured Party to disclose to PSC any
matter,  fact or thing  relating to the business,  operation or condition of any
other Loan Party or any of its  Subsidiaries  or its  property and assets now or
hereafter known by the Administrative Agent or such Secured Party.


     (c) PSC  hereby  unconditionally  waives  any  right  to  revoke  this  PSC
Guaranty,  and  acknowledges  that this PSC Guaranty is continuing in nature and
applies to all Guaranteed Obligations, whether existing now or in the future.

     (d) PSC acknowledges that it will receive  substantial  direct and indirect
benefits from the financing arrangements  contemplated by the Loan Documents and
that  the  waivers  set  forth  in  this  Section  9.03  are  knowingly  made in
contemplation of such benefits.

     SECTION  9.04.  Subrogation.  PSC hereby  unconditionally  and  irrevocably
agrees not to exercise any rights that it may now have or may hereafter  acquire
against any other Loan Party or any other insider  guarantor that arise from the
existence,  payment,  performance or enforcement of the Obligations of PSC under
this  PSC  Guaranty  or  under  any  other  Loan  Document,  including,  without
limitation, any right of subrogation,  reimbursement,  exoneration, contribution
or  indemnification  and any right to  participate in any claim or remedy of the
Administrative Agent or any other Secured Party against such other Loan Party or
any other insider guarantor or any Collateral, whether or not such claim, remedy
or right arises in equity or under contract,  statute or common law,  including,
without  limitation,  the right to take or receive from such other Loan Party or
any other insider guarantor,  directly or indirectly,  in cash or other property
or by setoff or in any other  manner,  payment  or  security  on account of such
claim, remedy or right, until such time as all of the Guaranteed Obligations and
all other amounts  payable under this PSC Guarantee shall have been paid in full
in cash,  all of the Letters of Credit shall have  expired,  terminated  or been
cancelled and the  Commitments  shall have expired or terminated.  If any amount
shall be paid to PSC in violation of the immediately  preceding  sentence at any
time  prior  to the  latest  of (a)  the  payment  in full in cash of all of the
Guaranteed  Obligations  and all other amounts  payable under this PSC Guaranty,
(b) the full drawing, termination,  expiration or cancellation of all Letters of
Credit and, (c) the Termination Date, such amount shall be held in trust for the
benefit of the  Administrative  Agent and the other  Secured  Parties  and shall
forthwith be paid to the Administrative  Agent to be credited and applied to the
Guaranteed  Obligations  and all other amounts  payable under this PSC Guaranty,
whether  matured  or  unmatured,  in  accordance  with  the  terms  of the  Loan
Documents,  or to be held as Collateral for any Guaranteed  Obligations or other
amounts payable under this PSC Guaranty thereafter arising. If (i) PSC shall pay
to the Administrative Agent all or any part of the Guaranteed Obligations,  (ii)
all of the Guaranteed  Obligations  and all other amounts payable under this PSC
Guaranty  shall  have been paid in full in cash,  (iii) all  of the  Letters  of
Credit shall have expired,  terminated or been cancelled,  (iv) the  Termination
Date shall have occurred,  and (v) the Working  Capital  Termination  Date shall
have occurred,  the Administrative  Agent and the other Secured Parties will, at
PSC's  request and expense,  execute and deliver to PSC  appropriate  documents,
without recourse and without  representation or warranty,  necessary to evidence
the transfer of subrogation to PSC of an interest in the Guaranteed  Obligations
resulting from the payment made by PSC.

     SECTION 9.05.  Continuing  Guarantee;  Assignments.  This PSC Guaranty is a
continuing  guaranty  and shall  (a) remain  in full force and effect  until the
latest of (i) the payment in full in cash of all of the  Guaranteed  Obligations



and all other amounts  payable  under this PSC Guaranty,  (ii) the full drawing,
termination,  expiration or cancellation of all Letters of Credit, and (iii) the
Termination  Date,  (b) be binding upon PSC, its  successors and assigns and (c)
inure to the benefit of, and be enforceable by, the Administrative Agent and the
other Secured Parties and their respective successors,  transferees and assigns.
Without  limiting  the  generality  of clause (c) of the  immediately  preceding
sentence,  any Lender Party may assign or otherwise  transfer all or any portion
of  its  rights  and  obligations  under  this  Agreement  (including,   without
limitation,  all or any portion of its Commitment or  Commitments,  the Advances
owing to it and the Notes held by it) to any other Person, and such other Person
shall  thereupon  become vested with all the benefits in respect thereof granted
to such  Lender  Party  under  this  Article  VI or  otherwise,  in each case as
provided in Section 8.07.



     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be
executed by their respective officers thereunto duly authorized,  as of the date
first above written.

                                          PSC ACQUISITION INC.


                                          By    /s/ William J. Woodard
                                                    William J. Woodard 
                                          Title: VP - Finance


                                          PSC INC.


                                          By    /s/ William J. Woodard
                                                    William J. Woodard  
                                          Title: VP - Finance
 

                                          FLEET BANK, as Administrative Agent


                                          By    /s/ Jeff Kenefick
                                                    Jeff Kenefick  
                                             Title: Assistant VP
 

                                          FLEET BANK, as Initial Issuing Bank


                                          By    /s/ Jeff Kenefick
                                                    Jeff Kenefick 
                                             Title: Assistant VP



                                Initial Lenders


                                          CORESTATES BANK, N.A.


                                          By    /s/ Brian M. Haley
                                                    Brian M. Haley 
                                             Title: Vice President


                                          FLEET BANK


                                          By    /s/ Jeff Kenefick
                                                    Jeff Kenefick     
                                             Title: Assistant VP


                                          KEY BANK NATIONAL ASSOCIATION


                                          By    /s/ Lawrence A. Mack
                                                    Lawrence A. Mack   
                                             Title: Vice President


                                          MANUFACTURERS & TRADERS
                                             TRUST COMPANY


                                          By   /s/ Philip M. Smith
                                                   Philip M. Smith  
                                             Title:Regional Senior VP


                                          PILGRIM AMERICA PRIME RATE TRUST


                                          By   /s/ Howard Tiffen
                                                   Howard Tiffen    
                                             Title:Senior Vice President


                                          SUMITOMO BANK


                                          By   /s/ Brian M. Smith & James Drum
                                                   Brian M. Smith & James Drum
                                             Title:Sr. VP Regional Mgr (East)
                                                   & VP NY Office

                               FORM OF TERM A NOTE

                                 PROMISSORY NOTE



$                                                           Dated: July __, 1996
- - --------------------------------

     FOR VALUE RECEIVED,  the  undersigned,  PSC  Acquisition,  Inc., a Delaware
corporation  (together with the Surviving  Corporation (as defined in the Credit
Agreement  referred to below),  the  "Borrower"),  HEREBY PROMISES TO PAY to the
order of Fleet Bank (the  "Lender")  for the account of its  Applicable  Lending
Office (as  defined in the Credit  Agreement  referred  to below) the  principal
amount of the Term A  Advance  (as  defined  below)  owing to the  Lender by the
Borrower  pursuant  to the  Credit  Agreement,  dated  as of July  __,  1996 (as
amended,  supplemented  or otherwise  modified,  the "Credit  Agreement";  terms
defined  therein being used herein as therein  defined) among the Borrower,  the
Lender and certain other lender parties thereto,  Fleet Bank, as Initial Issuing
Bank,  and Fleet  Bank,  as  Administrative  Agent for the Lender and such other
lender  parties,  on the  dates  and  in the  amounts  specified  in the  Credit
Agreement.

     The Borrower promises to pay interest on the unpaid principal amount of the
Term A Advance from the date of such Term A Advance until such principal  amount
is paid in full,  at such  interest  rates,  and payable at such  times,  as are
specified in the Credit Agreement.

     Both  principal  and  interest  are  payable in lawful  money of the United
States of America to Fleet Bank, as  Administrative  Agent,  at One East Avenue,
Rochester,  N.Y.  14638,  Account  No.  1983580,  in same day funds.  The Term A
Advance  owing to the Lender by the Borrower and the maturity  thereof,  and all
payments made on account of principal  thereof,  shall be recorded by the Lender
and, prior to any transfer hereof,  endorsed on the grid attached hereto,  which
is part of this Promissory Note.

     This Promissory Note is one of the Notes referred to in, and is entitled to
the benefits of, the Credit Agreement. The Credit Agreement, among other things,
(i) provides  for the making of a single term  advance (the "Term A Advance") by
the Lender to the  Borrower  in an amount not to exceed the U.S.  dollar  amount
first above mentioned, the indebtedness of the Borrower resulting from such Term
A Advance being evidenced by this Promissory Note, and (ii) contains  provisions
for  acceleration  of the maturity  hereof upon the happening of certain  stated
events and also for  prepayments  on account of  principal  hereof  prior to the
maturity hereof upon the terms and conditions therein specified. The obligations
of the Borrower under this  Promissory  Note,  and the  obligations of the other
Loan Parties under the Loan Documents, are secured by the Collateral as provided
in the Loan Documents.

     This  Promissory Note shall be governed by and construed in accordance with
the laws of the State of New York.

                                    PSC ACQUISITION, INC.



                                    By                             
                                        Name:
                                        Title:


              Term Advances And Payments Of Principal

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                                 Amount Of                                 
                  Amount Of    Principal Paid Unpaid Principal Notation
     Date       Term Advance    Or Prepaid       Balance        Made By
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                              FORM OF TERM B NOTE

                                 Promissory Note



$                                                         Dated:  July __, 1996
 -----------------------------

     FOR VALUE RECEIVED,  the  undersigned,  PSC  Acquisition,  Inc., a Delaware
corporation  (together with the Surviving  Corporation (as defined in the Credit
Agreement  referred to below),  the  "Borrower"),  HEREBY PROMISES TO PAY to the
order of Pilgrim  America Prime Rate Trust (the "Lender") for the account of its
Applicable Lending Office (as defined in the Credit Agreement referred to below)
the  principal  amount of the Term B Advance  (as  defined  below)  owing to the
Lender by the Borrower  pursuant to the Credit  Agreement,  dated as of July __,
1996 (as amended,  supplemented or otherwise  modified,  the "Credit Agreement";
terms defined therein being used herein as therein  defined) among the Borrower,
the Lender and certain  other lender  parties  thereto,  Fleet Bank,  as Initial
Issuing Bank,  and Fleet Bank, as  Administrative  Agent for the Lender and such
other lender  parties,  on the dates and in the amounts  specified in the Credit
Agreement.

     The Borrower promises to pay interest on the unpaid principal amount of the
Term B Advance from the date of such Term B Advance until such principal  amount
is paid in full,  at such  interest  rates,  and payable at such  times,  as are
specified in the Credit Agreement.

     Both  principal  and  interest  are  payable in lawful  money of the United
States of America to Fleet Bank, as  Administrative  Agent,  at One East Avenue,
Rochester,  N.Y.  14638,  Account  No.  1983580,  in same day funds.  The Term B
Advance  owing to the Lender by the Borrower and the maturity  thereof,  and all
payments made on account of principal  thereof,  shall be recorded by the Lender
and, prior to any transfer hereof,  endorsed on the grid attached hereto,  which
is part of this Promissory Note.

     This Promissory Note is one of the Notes referred to in, and is entitled to
the benefits of, the Credit Agreement. The Credit Agreement, among other things,
(i) provides  for the making of a single term  advance (the "Term B Advance") by
the Lender to the  Borrower  in an amount not to exceed the U.S.  dollar  amount
first above mentioned, the indebtedness of the Borrower resulting from such Term
B Advance being evidenced by this Promissory Note, and (ii) contains  provisions
for  acceleration  of the maturity  hereof upon the happening of certain  stated
events and also for  prepayments  on account of  principal  hereof  prior to the
maturity hereof upon the terms and conditions therein specified. The obligations
of the Borrower under this  Promissory  Note,  and the  obligations of the other
Loan Parties under the Loan Documents, are secured by the Collateral as provided
in the Loan Documents.

     This  Promissory Note shall be governed by and construed in accordance with
the laws of the State of New York.

                                    PSC ACQUISITION, INC.



                                    By                             
                                        Name:
                                        Title:


              Term Advances And Payments Of Principal

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                                 Amount Of                                 
                  Amount Of    Principal Paid Unpaid Principal Notation
     Date       Term Advance    Or Prepaid       Balance        Made By
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                              FORM OF TERM WORKING
                                 CAPITAL ADVANCE
                                 Promissory Note


$                                                          Dated: July __, 1996
 --------------------

     FOR VALUE RECEIVED,  the  undersigned,  PSC  Acquisition,  INC., a Delaware
corporation  (together with the Surviving  Corporation (as defined in the Credit
Agreement  referred to below),  the  "Borrower"),  HEREBY PROMISES TO PAY to the
order of Manufacturers & Traders Trust Company (the "Lender") for the account of
its Applicable  Lending Office (as defined in the Credit  Agreement  referred to
below) the  aggregate  principal  amount of the  Working  Capital  Advances  (as
defined  below)  owing to the  Lender by the  Borrower  pursuant  to the  Credit
Agreement,  dated as of July __, 1996 (as  amended,  supplemented  or  otherwise
modified,  the "Credit  Agreement";  terms defined  therein being used herein as
therein defined) among the Borrower, the Lender and certain other lender parties
thereto,  Fleet Bank, as Initial Issuing Bank, and Fleet Bank, as Administrative
Agent for the Lender and such  other  lender  parties,  on the  Working  Capital
Termination Date.

     The  Borrower  promises to pay interest on the unpaid  principal  amount of
each Working Capital Advance from the date of such Working Capital Advance until
such principal  amount is paid in full, at such interest  rates,  and payable at
such times, as are specified in the Credit Agreement.

     Both  principal  and  interest  are  payable in lawful  money of the United
States of America to Fleet Bank, as  Administrative  Agent,  at One East Avenue,
Rochester,  N.Y.  14638,  Account No. 1983580,  in same day funds.  Each Working
Capital  Advance  owing to the Lender by the Borrower and the maturity  thereof,
and all payments made on account of principal thereof,  shall be recorded by the
Lender and, prior to any transfer hereof,  endorsed on the grid attached hereto,
which is part of this Promissory Note.

     This Promissory Note is one of the Notes referred to in, and is entitled to
the benefits of, the Credit Agreement. The Credit Agreement, among other things,
(i) provides for the making of working  capital  advances (the "Working  Capital
Advances")  by the  Lender to the  Borrower  from  time to time in an  aggregate
amount not to exceed at any time  outstanding the U.S. dollar amount first above
mentioned,  the  indebtedness  of the Borrower  resulting from each such Working
Capital  Advance  being  evidenced by this  Promissory  Note,  and (ii) contains
provisions for acceleration of the maturity hereof upon the happening of certain
stated events and also for  prepayments on account of principal  hereof prior to
the  maturity  hereof  upon the  terms and  conditions  therein  specified.  The
obligations of the Borrower under this  Promissory  Note, and the obligations of
the other Loan Parties under the Loan  Documents,  are secured by the Collateral
referred to in the Collateral Documents.

     This Note shall be governed by and construed in accordance with the laws of
the State of New York.

                                    PSC ACQUISITION, INC.



                                    By                             
                                        Name:
                                        Title:


        Working Capital Advances And Payments Of Principal

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     Date         Amount Of      Amount Of
                Working Capital Principal Paid Unpaid Principal Notation
                   Advance      Or Prepaid       Balance        Made By
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