COMMERCIAL SECURITY AGREEMENT

 
 
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Principal        Loan Date      Maturity       Loan No      Call     Collateral    Account    Officer     Initials
                                                                                   
$500,000.00      03-22-1995     04-30-1995     09400156     3        700                      TFD
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References in the shaded area are for Lender's use only and do not limit the 
applicability of this document to any particular loan or item.
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Borrower: VITRONICS CORPORATION     
          FORBES ROAD, NEWMARKET INDUSTRIAL PARK
          NEWMARKET, NH 03857

Lender:   First National Bank of Portsmouth
          488 Central Avenue
          Dover, NH 03820

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  THIS COMMERCIAL SECURITY AGREEMENT is entered into between VITRONICS
  CORPORATION (referred to below as "Grantor"); and First National Bank of
  Portsmouth (referred to below as "Lender"). For valuable consideration,
  Grantor grants to Lender a security interest in the Collateral to secure the
  indebtedness and agrees that Lender shall have the rights stated in this
  Agreement with respect to the Collateral, in addition to all other rights
  which Lender may have by law.

  DEFINITIONS. The following words shall have the following meanings when used
  in this Agreement. Terms not otherwise defined in this Agreement shall have
  the meanings attributed to such terms in the Uniform Commercial Code. All
  references to dollar amounts shall mean amounts in lawful money of the United
  States of America.

      Agreement. The word "Agreement" means this Commercial Security Agreement,
      as this Commercial Security Agreement may be amended or modified from time
      to time, together with all exhibits and schedules attached to this
      Commercial Security Agreement from time to time.

      Collateral. The word "Collateral" means the following described property
      of Grantor, whether now owned or hereafter acquired, whether now existing
      or hereafter arising, and wherever located:

          All inventory, chattel paper, accounts, contract rights, equipment,
          general intangibles and fixtures, together with the following
          specifically described property: FIRST SECURITY INTEREST ON ALL
          ACCOUNTS RECEIVABLE, INVENTORY, FURNITURE, FIXTURES AND EQUIPMENT NOW
          OWNED AND HEREAFTER ACQUIRED AND THE PROCEEDS THEREOF.

      In addition, the word "Collateral" includes all the following, whether now
      owned or hereafter acquired, whether now existing or hereafter arising,
      and wherever located:

          (a) All attachments, accessions, accessories, tools, parts, supplies,
          increases, and additions to and all replacements of and substitutions
          for any property described above.

          (b) All products and produce of any of the property described in this 
          Collateral section.

          (c) All accounts, contract rights, general intangibles, instruments,
          rents, monies, payments, and all other rights, arising out of a sale,
          lease, or other disposition of any of the property described in this
          Collateral section.

          (d) All proceeds (including insurance proceeds) from the sale,
          destruction, loss, or other disposition of any of the property
          described in this Collateral section.

          (e) All records and data relating to any of the property described in
          this Collateral section, whether in the form of a writing, photograph,
          microfilm, microfiche, or electronic media, together with all of
          Grantor's right, title, and interest, in and to all computer software
          required to utilize, create, maintain, and process any such records or
          data on electronic media.

      Fixtures are and will be located on the following described real estate:

          FORBES ROAD, NEWMARKET INDUSTRIAL PARK, NEWMARKET, NH COUNTY OF 
          ROCKHINGHAM.

      Event of Default. The words "Event of Default" mean and include without
      limitation any of the Events of Default set forth below in the section
      titled "Events of Default."

      Grantor. The word "Grantor" means VITRONICS CORPORATION, its successors 
      and assigns.

      Guarantor. The word "Guarantor" means and includes without limitation each
      and all of the guarantors, sureties, and accommodation parties in
      connection with the indebtedness.

      Indebtedness. The word "indebtedness" means the indebtedness evidenced by
      the Note, including all principal and interest, together with all other
      indebtedness and costs and expenses for which Grantor is responsible under
      this Agreement or under any of the Related Documents.

      Lender. The word "Lender" means First National Bank of Portsmouth, its 
      successors and assigns.

      Note. The word "Note" means the note or credit agreement dated March 22,
      1995, in the principal amount of $500,000.00 from Grantor to Lender,
      together with all renewals of, extensions of, modifications of,
      refinancings of, consolidations of and substitutions for the note or
      credit agreement.

      Related Documents. The words "Related Documents" mean and include without
      limitation all promissory notes, credit agreements, loan agreements,
      environmental agreements, guaranties, security agreements, mortgages,
      deeds of trust, and all other instruments, agreements and documents,
      whether now or hereafter existing, executed in connection with the
      indebtedness.

  RIGHT OF SETOFF. Grantor hereby grants Lender a contractual possessory
  security interest in and hereby assigns, conveys, delivers, pledges, and
  transfers all of Grantor's right, title and interest in and to Grantor's
  accounts with Lender (whether checking, savings, or some other account),
  including all accounts held jointly with someone else and all accounts Grantor
  may open in the future, excluding however all IRA, Keogh, and trust accounts. 
  Grantor authorizes Lender, to the extent permitted by applicable law, to
  charge or setoff all indebtedness against any and all such accounts.

  OBLIGATIONS OF GRANTOR. Grantor warrants and covenants to Lender as follows:

      Perfection of Security Interest. Grantor agrees to execute such financing
      statements and to take whatever other actions are requested by Lender to
      perfect and continue Lender's security interest in the Collateral. Upon
      request of Lender, Grantor will deliver to Lender any and all of the
      documents evidencing or constituting the Collateral, and Grantor will note
      Lender's interest upon any and all chattel paper if not delivered to
      Lender for possession by Lender. Grantor hereby appoints Lender as its
      irrevocable attorney-in-fact for the purpose of executing any documents
      necessary to perfect or to continue the security interest granted in this
      Agreement. Lender may at any time, and without further authorization from
      Grantor, file a carbon, photographic or other reproduction of any
      financing statement or of this Agreement for use as a financing statement.
      Grantor will reimburse Lender for all expenses for the perfection and the
      continuation of the perfection of Lender's security interest in the
      Collateral. Grantor promptly will notify Lender before any change in
      Grantor's name including any change to the assumed business names of
      Grantor. This is a continuing Security Agreement and will continue in
      effect even though all or any part of the Indebtedness is paid in full and
      even though for a period of time Grantor may not be indebted to Lender.

 
03-22-1996          COMMERCIAL SECURITY AGREEMENT          Page 2
                             (Continued)
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No Violation. The execution and delivery of this Agreement will not violate any 
law or agreement governing Grantor or to which Grantor is a party, and its 
certificate or articles of incorporation and bylaws do not prohibit any term or 
condition of this Agreement.

Enforceability of Collateral. To the extent the Collateral consists of accounts,
contract rights, chattel paper, or general intangibles, the Collateral is
enforceable in accordance with its terms, is genuine, and complies with
applicable laws concerning form, content and manner of preparation and
execution, and all persons appearing to be obligated on the Collateral have
authority and capacity to contract and are in fact obligated as they appear to
be on the Collateral. At the time any account becomes subject to a security
interest in favor of Lender, the account shall be a good and valid account
representing an undisputed, bona fide indebtedness incurred by the account
debtor, for merchandise held subject to delivery instructions or theretofore
shipped or delivered pursuant to a contract of sale, or for services theretofore
performed by Grantor with or for the account debtor; there shall be no setoffs
or counterclaims against any such account; and no agreement under which any
deductions or discounts may be claimed shall have been made with the account
debtor except those disclosed to Lender in writing.

Location of the Collateral. Grantor, upon request of Lender, will deliver to 
Lender in form satisfactory to Lender a schedule of real properties and 
Collateral locations relating to Grantor's operations, including without 
limitation the following: (a) all real property owned or being purchased by 
Grantor; (b) all real property being rented or leased by Grantor; (c) all 
storage facilities owned, rented, leased, or being used by Grantor; and (d) 
all other properties where Collateral is or may be located. Except in the 
ordinary course of its business, Grantor shall not remove the Collateral from 
its existing locations without the prior written consent of Lender.

Removal of Collateral. Grantor shall keep the Collateral (or to the extent the 
Collateral consists of intangible property such as accounts, the records 
concerning the Collateral) at Grantor's address shown above, or at such other 
locations as are acceptable to Lender. Some or all of the Collateral may be 
located at the real property described above. Except in the ordinary course of 
its business, including the sales of inventory, Grantor shall not remove the 
Collateral from its existing locations without the prior written consent of 
Lender. To the extent that the Collateral consists of vehicles, or other titled 
property, Grantor shall not take or permit any action which would require 
application for certificates of title for the vehicles outside the State of New 
Hampshire, without the prior written consent of Lender.

Transactions involving Collateral. Except for inventory sold or accounts
collected in the ordinary course of Grantor's business, Grantor shall not sell,
offer to sell, or otherwise transfer or dispose of the Collateral. While Grantor
is not in default under this Agreement, Grantor may sell inventory, but only in
the ordinary course of its business and only to buyers who qualify as a buyer in
the ordinary course of business. A sale in the ordinary course of Grantor's
business does not include a transfer in partial or total satisfaction of a debt
or any bulk sale. Grantor shall not pledge, mortgage, encumber or otherwise
permit the Collateral to be subject to any lien, security interest, encumbrance,
or charge, other than the security interest provided for in this Agreement,
without the prior written consent of Lender. This includes security interests
even if junior in right to the security interests granted under this Agreement.
Unless waived by Lender, all proceeds from any disposition of the Collateral
(for whatever reason) shall be held in trust for Lender and shall not be
commingled with any other funds; provided however, this requirement shall not 
constitute consent by Lender to any sale or other disposition. Upon receipt, 
Grantor shall immediately deliver any such proceeds to Lender.

Title. Grantor represents and warrants to Lender that it holds good and 
marketable title to the Collateral, free and clear of all liens and encumbrances
except for the lien of this Agreement. No financing statement covering any of 
the Collateral is on file in any public office other than those which reflect 
the security interest created by this Agreement or to which Lender has 
specifically consented. Grantor shall defend Lender's rights in the Collateral 
against the claims and demands of all other persons.

Collateral Schedules and Locations. As often as Lender shall require, and 
insofar as the Collateral consists of accounts and general intangibles, Grantor 
shall deliver to Lender schedules of such Collateral, including such information
as Lender may require, including without limitation names and addresses of 
account debtors and agings of accounts and general intangibles. Insofar as the 
Collateral consists of inventory and equipment, Grantor shall deliver to Lender,
as often as Lender shall require, such lists, descriptions, and designations of 
such Collateral as Lender may require to identify the nature, extent, and 
location of such Collateral. Such information shall be submitted for Grantor and
each of its subsidiaries or related companies.

Maintenance and Inspection of Collateral. Grantor shall maintain all tangible
Collateral in good condition and repair. Grantor will not commit or permit
damage to or destruction of the Collateral or any part of the Collateral. Lender
and its designated representatives and agents shall have the right at all
reasonable times to examine, inspect, and audit the Collateral wherever located.
Grantor shall immediately notify Lender of all cases involving the return,
rejection, repossession, loss or damage of or to any Collateral; of any request
for credit or adjustment or of any other dispute arising with respect to the
Collateral; and generally of all happenings and events affecting the Collateral
or the value or the amount of the Collateral.

Taxes, Assessments and Liens. Grantor will pay when due all taxes, assessments
and liens upon the Collateral, its use or operation, upon this Agreement, upon
any promissory note or notes evidencing the indebtedness, or upon any of the
other Related Documents. Grantor may withhold any such payment or may elect to
contest any lien if Grantor is in good faith conducting an appropriate
proceeding to contest the obligation to pay and so long as Lender's interest in
the Collateral is not jeopardized in Lender's sole opinion. If the Collateral is
subjected to a lien which is not discharged within fifteen (15) days, Grantor
shall deposit with Lender cash, a sufficient corporate surety bond or other
security satisfactory to Lender in an amount adequate to provide for the
discharge of the lien plus any interest, costs, attorneys' fees or other charges
that could accrue as a result of foreclosure or sale of the Collateral. In any
contest Grantor shall defend itself and Lender and shall satisfy any final
adverse judgment before enforcement against the Collateral. Grantor shall name
Lender as an additional obligee under any surety bond furnished in the contest
proceedings.

Compliance With Governmental Requirements. Grantor shall comply promptly with 
all laws, ordinances, rules and regulations of all governmental authorities, now
or hereafter in effect, applicable to the ownership, production, disposition, or
use of the Collateral. Grantor may contest in good faith any such law, ordinance
or regulation and withhold compliance during any proceeding, including 
appropriate appeals, so long as Lender's interest in the Collateral, in Lender's
opinion, is not jeopardized.

Hazardous Substances. Grantor represents and warrants that the Collateral never
has been, and never will be so long as this Agreement remains a lien on the
Collateral, used for the generation, manufacture, storage, transportation,
treatment, disposal, release or threatened release of any hazardous waste or
substance, as those terms are defined in the Comprehensive Environmental
Response, Compensation, and Liability Act of 1980, as amended, 42 U.S.C. Section
9601, et seq. ("CERCLA"), the Superfund Amendments and Reauthorization Act of
1986, Pub. L. No. 99-499 ("SARA"), the Hazardous Materials Transportation Act,
49 U.S.C. 1801, et seq., the Resource Conservation and Recovery Act, 49 U.S.C.
Section 6901, et seq., or other applicable state or Federal laws, rules, or
regulations adopted pursuant to any of the foregoing. The terms "hazardous
waste" and "hazardous substance" shall also include, without limitation,
petroleum and petroleum by-products or any fraction thereof and asbestos. The
representations and warranties contained herein are based on Grantor's due
diligence in investigating the Collateral for hazardous wastes and substances.
Grantor hereby (a) releases and waives any future claims against Lender for
indemnify or contribution in the event Grantor becomes liable for cleanup or
other costs under any such laws, and (b) agrees to indemnify and hold harmless
Lender against any and all claims and losses resulting from a breach of this
provision of this Agreement. This obligation to indemnify shall survive the
payment of the indebtedness and the satisfaction of this Agreement.

Maintenance of Casualty Insurance. Grantor shall procure and maintain all risks 
insurance, including without limitation fire, theft and liability coverage 
together with such other insurance as Lender may require with respect to the 
Collateral, in form, amounts, coverages and basis

 
03-22-1995                      COMMERCIAL SECURITY AGREEMENT         Page 3
                                           (Continued)
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reasonably acceptable to Lender and issued by a company or companies reasonably 
acceptable to Lender. Grantor, upon request of Lender, will deliver to Lender 
from time to time the policies or certificates of insurance in form satisfactory
to Lender, including stipulations that coverages will not be cancelled or 
diminished without at least twenty (20) days' prior written notice to Lender and
not including any disclaimer of the insurer's liability for failure to give
such a notice. Each insurance policy also shall include an endorsement providing
that coverage in favor of Lender will not be impaired in any way by any act, 
omission or default of Grantor or any other person. In connection with all 
policies covering assets in which Lender holds or is offered a security 
interest, Grantor will provide Lender with such loss payable or other 
endorsements as Lender may require. If Grantor at any time fails to obtain or 
maintain any insurance as required under this Agreement, Lender may (but shall 
not be obligated to) obtain such insurance as Lender deems appropriate, 
including if it so chooses "single interest insurance," which will cover only 
Lender's interest in the Collateral.

Application of Insurance Proceeds. Grantor shall promptly notify Lender of any 
loss or damage to the Collateral. Lender may make proof of loss if Grantor fails
to do so within fifteen (15) days of the casualty. All proceeds of any Insurance
on the Collateral, including accrued proceeds thereon, shall be held by Lender 
as part of the Collateral. If Lender consents to repair or replacement of the 
damaged or destroyed Collateral, Lender shall, upon satisfactory proof of 
expenditure, pay or reimburse Grantor from the proceeds for the reasonable cost 
of repair or restoration. If Lender does not consent to repair or replacement of
the Collateral, Lender shall retain a sufficient amount of the proceeds to pay 
all of the Indebtedness, and shall pay the balance to Grantor. Any proceeds 
which have not been disbursed within six (6) months after their receipt and 
which Grantor has not committed to the repair or restoration of the Collateral 
shall be used to prepay the Indebtedness.

Insurance Reserves. Lender may require Grantor to maintain with Lender reserves
for payment of insurance premiums, which reserves shall be created by monthly
payments from Grantor of a sum estimated by Lender to be sufficient to produce,
at least fifteen (15) days before the premium due date, amounts at least equal
to the insurance premiums to be paid. If fifteen (15) days before payment is
due, the reserve funds are insufficient, Grantor shall upon demand pay any
deficiency to Lender. The reserve funds shall be held by Lender as a general
deposit and shall constitute a non-interest-bearing account which Lender may
satisfy by payment of the insurance premiums required to be paid by Grantor as
they become due. Lender does not hold the reserve funds in trust for Grantor,
and Lender is not the agent of Grantor for payment of the insurance premiums
required to be paid by Grantor. The responsibility for the payment of premiums
shall remain Grantor's sole responsibility.

Insurance Reports. Grantor, upon request of Lender, shall furnish to Lender 
reports on each existing policy of Insurance showing such information as Lender 
may reasonably request including the following: (a) the name of the insurer; (b)
the risks insured; (c) the amount of the policy; (d) the property insured; (e) 
the then current value on the basis of which insurance has been obtained and the
manner of determining that value; and (f) the expiration date of the policy. In 
addition, Grantor shall upon request by Lender (however not more often than 
annually) have an independent appraiser satisfactory to Lender determine, as 
applicable, the cash value or replacement cost of the Collateral.

GRANTOR'S RIGHT TO POSSESSION AND TO COLLECT ACCOUNTS. Until default and except
as otherwise provided below with respect to accounts, Grantor may have
possession of the tangible personal property and beneficial use of all the
Collateral and may use it in any lawful manner not inconsistent with this
Agreement or the Related Documents, provided that Grantor's right to possession
and beneficial use shall not apply to any Collateral where possession of the
Collateral by Lender is required by law to perfect Lender's security interest in
such Collateral. Unit otherwise notified by Lender, Grantor may collect any of
the Collateral consisting of accounts. At any time and even though no Event of
Default exists. Lender may exercise its rights to collect the accounts and to
notify account debtors to make payments directly to Lender for application to
the indebtedness. If Lender at any time has possession of any Collateral,
whether before or after  an Event of Default. Lender shall be deemed to have
exercised reasonable care in the custody and preservation of the Collateral if
Lender takes such action for that purpose as Grantor shall request or as Lender,
in Lender's sole discretion, shall deem appropriate under the circumstances, but
failure to honor any request by Grantor shall not of itself be deemed to be a
failure to exercise reasonable care. Lender shall not be required to take any
steps necessary to preserve any rights in the Collateral against prior parties,
nor to protect, preserve or maintain any security interest given to secure the
indebtedness.

EXPENDITURES BY LENDER. If not discharged or paid when due, Lender may (but 
shall not be obligated to) discharge or pay any amounts required to be 
discharged or paid by the Grantor under this Agreement, including without 
limitation all taxes, liens, security interests, encumbrances, and other claims,
at any time levied or placed on the Collateral. Lender also may (but shall not 
be obligated to) pay all costs for insuring, maintaining and preserving the 
Collateral. All such expenditures incurred or paid by Lender for such purposes 
will then bear interest at the rate charged under the Note from the date 
incurred or paid by Lender to the date of repayment by Grantor. All such 
expenses shall become a part of the indebtedness and, at Lender's option, will 
(a) be payable on demand, (b) be added to the balance of the Note and be 
apportioned among and be payable with any installment payments to become due 
during either (i) the term of any applicable insurance policy or (ii) the 
remaining term of the Note, or (c) be treated as a balloon payment which will be
due and payable at the Note's maturity. This Agreement also will secure payment 
of these amounts. Such right shall be in addition to all other rights and 
remedies to which Lender may be entitled upon the occurrence of an Event of 
Default.

EVENTS OF DEFAULT. Each of the following shall constitute an Event of Default 
under this Agreement:
 
    Default on Indebtedness. Failure of Grantor to make any payment when due 
    on the Indebtedness.
     
    Other Defaults. Failure of Grantor to comply with or to perform any other
    term, obligation, covenant or condition contained in this Agreement or in
    any of the Related Documents or in any other agreement between Lender and
    Grantor.

    Insolvency. The dissolution or termination of Grantor's existence as a going
    business, the insolvency of Grantor, the appointment of a receiver for any
    part of Grantor's property, any assignment for the benefit of creditors, any
    type of creditor workout, or the commencement of any proceeding under any
    bankruptcy or insolvency laws by or against Grantor.

    Creditor or Forfeiture Proceedings. Commencement of foreclosure or
    forfeiture proceedings, whether by judicial proceeding, self-help,
    repossession or any other method, by any creditor of Grantor or by any
    governmental agency against the Collateral or any other collateral securing
    the indebtedness. This includes a garnishment of any of Grantor's deposit
    accounts with Lender.


    Events Affecting Guarantor. Any of the preceding events occurs with respect
    to any Guarantor of any of the indebtedness or such Grantor dies or becomes
    incompetent.

    Insecurity. Lender, in good faith, deems itself insecure.

RIGHTS AND REMEDIES ON DEFAULT. If an Event of Default occurs under this 
Agreement, at any time thereafter, Lender shall have all the rights of a secured
party under the New Hampshire Uniform Commercial Code. In addition and without 
limitation, Lender may exercise any one or more of the following rights and 
remedies:

    Accelerate Indebtedness. Lender may declare the entire indebtedness, 
including any prepayment penalty which Grantor would be required to pay, 
immediately due and payable, without notice.

    Assemble Collateral. Lender may require Grantor to deliver to Lender all or 
any portion of the Collateral and any and all certificates of title and other 
documents relating to the Collateral. Lender may require Grantor to assemble the
Collateral and make it available to Lender at a place to be designated by 
Lender. Lender also shall have full power to enter upon the property of Grantor 
to take possession of and remove the Collateral. If the Collateral contains 
other goods not covered by this Agreement at the time of repossession, Grantor 
agrees Lender may take such other goods provided that Lender makes reasonable 
efforts to return them to Grantor after repossession.


 
03-22-1995               COMMERCIAL SECURITY AGREEMENT                  Page 4
                                  (Continued)
==============================================================================
    Sell the Collateral. Lender shall have full power to sell, lease, transfer,
    or otherwise deal with the Collateral or proceeds thereof in its own name or
    that of Grantor. Lender may sell the Collateral at public auction or private
    sale. Unless the Collateral threatens to decline speedily in value or is of
    a type customarily sold on a recognized market, Lender will give Grantor
    reasonable notice of the time after which any private sale or any other
    intended disposition of the Collateral is to be made. The requirements of
    reasonable notice shall be met if such notice is given at least ten (10)
    days before the time of the sale or disposition. All expenses relating to
    the disposition of the Collateral, including without limitation the expenses
    of retaking, holding, insuring, preparing for sale and selling the
    Collateral, shall become a part of the indebtedness secured by this
    Agreement and shall be payable on demand, with interest at the Note rate
    from date of expenditure until repaid.

    Appoint Receiver. To the extent permitted by applicable law, Lender shall
    have the following rights and remedies regarding the appointment of a
    receiver: (a) Lender may have a receiver appointed as a matter of right, (b)
    the receiver may be an employee of Lender and may serve without bond, and
    (c) all fees of the receiver and his or her attorney shall become part of
    the indebtedness secured by this Agreement and shall be payable on demand,
    with interest at the Note rate from date of expenditure until repaid.

    Collect Revenues, Apply Accounts. Lender, either itself or through a
    receiver, may collect the payments, rents, income, and revenues from the
    Collateral. Lender may at any time in its discretion transfer any Collateral
    into its own name or that of its nominee and receive the payments, rents,
    income, and revenues therefrom and hold the same as security for the
    indebtedness or apply it to payment of the indebtedness in such order of
    preference as Lender may determine. Insofar as the Collateral consists of
    accounts, general intangibles, insurance policies, instruments, chattel
    paper, choses in action, or similar property, Lender may demand, collect,
    receipt for, settle, compromise, adjust, sue for, foreclose, or realize on
    the Collateral as Lender may determine, whether or not Indebtedness or
    Collateral is then due. For these purposes, Lender may, on behalf of and in
    the name of Grantor, receive, open and dispose of mail addressed to Grantor;
    change any address to which mail and payments are to be sent; and endorse
    notes, checks, drafts, money orders, documents of title, instruments and
    items pertaining to payment, shipment, or storage of any Collateral. To
    facilitate collection, Lender may notify account debtors and obligors on any
    Collateral to make payments directly to Lender.

    Obtain Deficiency. If Lender chooses to sell any or all of the Collateral,
    Lender may obtain a judgment against Grantor for any deficiency remaining on
    the indebtedness due to Lender after application of all amounts received
    from the exercise of the rights provided in this Agreement. Grantor shall be
    liable for a deficiency even if the transaction described in this subsection
    is a sale of accounts or chattel paper.

    Other Rights and Remedies. Lender shall have all the rights and remedies of
    a secured creditor under the provisions of the Uniform Commercial Code, as
    may be amended from time to time. In addition, Lender shall have and may
    exercise any or all other rights and remedies it may have available at law,
    in equity, or otherwise.

    Cumulative Remedies. All of Lender's rights and remedies, whether evidenced
    by this Agreement or the Related Documents or by any other writing, shall be
    cumulative and may be exercised singularly or concurrently. Election by
    Lender to pursue any remedy shall not exclude pursuit of any other remedy,
    and an election to make expenditures or to take action to perform an
    obligation of Grantor under this Agreement, after Grantor's failure to
    perform, shall not affect Lender's right to declare a default and to
    exercise its remedies.

MISCELLANEOUS PROVISIONS. The following miscellaneous provisions are a part of 
this Agreement:

    Amendments. This Agreement, together with any Related Documents, constitutes
    the entire understanding and agreement of the parties as to the matters set
    forth in this Agreement. No alteration of or amendment to this Agreement
    shall be effective unless given in writing and signed by the party or
    parties sought to be charged or bound by the alteration or amendment.

    Applicable Law. This Agreement has been delivered to Lender and accepted by
    Lender in the State of New Hampshire. If there is a lawsuit, Grantor agrees
    upon Lender's request to submit to the jurisdiction of the courts of
    Strafford County, State of New Hampshire. This Agreement shall be governed
    by and construed in accordance with the laws of the State of New Hampshire.

    Attorneys' Fees; Expenses. Grantor agrees to pay upon demand all of Lender's
    costs and expenses, including attorneys' fees and Lender's legal expenses,
    incurred in connection with the enforcement of this Agreement. Lender may
    pay someone else to help enforce this Agreement, and Grantor shall pay the
    costs and expenses of such enforcement. Costs and expenses include Lender's
    attorneys' fees and legal expenses whether or not there is a lawsuit,
    including attorneys' fees and legal expenses for bankruptcy proceedings (and
    including efforts to modify or vacate any automatic stay or injunction),
    appeals, and any anticipated post-judgment collection services. Grantor also
    shall pay all court costs and such additional fees as may be directed by the
    court.
    
    Caption Headings. Caption headings in this Agreement are for convenience
    purposes only and are not to be used to interpret or define the provisions
    of this Agreement.

    Notices. All notices required to be given under this Agreement shall be
    given in writing and shall be effective when actually delivered or when
    deposited with a nationally recognized overnight courier or deposited in the
    United States mail, first class, postage prepaid, addressed to the party to
    whom the notice is to be given at the address shown above. Any party may
    change its address for notices under this Agreement by giving formal written
    notice to the other parties, specifying that the purpose of the notice is to
    change the party's address. To the extent permitted by applicable law, if
    there is more than one Grantor, notice to any Grantor will constitute notice
    to all Grantors. For notice purposes, Grantor agrees to keep Lender informed
    at all times of Grantor's current address(es).

    Power of Attorney. Grantor hereby appoints Lender as its true and lawful
    attorney-in-fact, irrevocably, with full power of substitution to do the
    following: (a) to demand, collect, receive, receipt for, sue and recover all
    sums of money or other property which may now or hereafter become due, owing
    or payable from the Collateral; (b) to execute, sign and endorse any and all
    claims, instruments, receipts, checks, drafts or warrants issued in payment
    for the Collateral; (c) to settle or compromise any and all claims arising
    under the Collateral, and, in the place and stead of Grantor, to execute and
    deliver its release and settlement for the claim; and (d) to file any claim
    or claims or to take any action or institute or take part in any
    proceedings, either in its own name or in the name of Grantor, or otherwise,
    which in the discretion of Lender may seem to be necessary or advisable.
    This power is given as security for the Indebtedness, and the authority
    hereby conferred is and shall be irrevocable and shall remain in full force
    and effect until renounced by Lender.

    Severability. If a court of competent jurisdiction finds any provision of
    this Agreement to be invalid or unenforceable as to any person or
    circumstance, such finding shall not render that provision invalid or
    unenforceable as to any other persons or circumstances. If feasible, any
    such offending provision shall be deemed to be modified to be within the
    limits of enforceability or validity; however, if the offending provision
    cannot be so modified, it shall be stricken and all other provisions of this
    Agreement in all other respects shall remain valid and enforceable.

    Successor interests. Subject to the limitations set forth above on transfer
    of the Collateral, this Agreement shall be binding upon and inure to the
    benefit of the parties, their successors and assigns.

    Waiver. Lender shall not be deemed to have waived any rights under this 
Agreement unless such waiver is given in writing and signed by Lender. No delay 
or omission on the part of Lender in exercising any right shall operate as a 
waiver of such right or any other right. A waiver by Lender of a provision of 
this Agreement shall not prejudice or constitute a waiver of Lender's right 
otherwise to demand strict compliance with that provision or any other provision
of this Agreement. No prior waiver by Lender, nor any course of dealing between 
Lender and Grantor, shall constitute a waiver of any of Lender's rights or of 
any of Grantor's obligations as to any future transactions. Whenever the 
consent of Lender is 

 
03-22-1995                   COMMERCIAL SECURITY AGREEMENT             Page 5   
                                        (Continued)
===============================================================================
  required under this Agreement, the granting of such consent by Lender in any 
  instance shall not constitute continuing consent to subsequent instances where
  such consent is required and in all cases such consent may be granted or 
  withheld in the sole discretion of Lender.

GRANTOR ACKNOWLEDGES HAVING READ ALL THE PROVISIONS OF THIS COMMERCIAL SECURITY 
AGREEMENT, AND GRANTOR AGREES TO ITS TERMS. THIS AGREEMENT IS DATED MARCH 22, 
1995.

GRANTOR:

VITRONICS CORPORATION

By: /s/ James J. Manfield Jr.
   -----------------------------------------
   JAMES J. MANFIELD, JR., CHAIRMAN & CEO 

ATTEST:

- ---------------------------------------------           (Corporate Seal)
   Secretary or Assistant Secretary

LENDER:

First National Bank of Portsmouth

By: /s/ Timothy F. Dargan V.P.
   -----------------------------------------
   Authorized Officer

================================================================================
LASER PRO, Reg. U.S. Pat. & T.M. Off., Ver. 3.18(c) 1995 CFI ProServices, Inc. 
All Rights reserved. [NH-E40 VITRONIC.LN C1.OVL)