EXHIBIT 10.14

                                      LEASE



                                    SECTION 1



     SECTION 1.1. REFERENCE  INFORMATION.  Reference in this Lease to any of the
following shall have the meaning set forth below:

         Date of this lease:  1 October 1995

     Premises: Approximately 31,917 square feet of floor space identified as the
Premises Part A and Part B on the plan attached  hereto as Exhibit B of Building
Number 7 (the  "Building") on the lot (the "Site")  situated at 150 Sohier Road,
Beverly, Massachusetts,  together with the unassigned parking spaces (located in
the parking area adjoining the Building) as shown on the plan attached hereto as
Exhibit  A.

     Landlord: Communications & Power Industries, Inc., a Delaware corporation

     Address of Landlord: 150 Sohier Road, Beverly, Massachusetts 01915

     Tenant: Converter Power Inc., a Massachusetts corporation

     Address of Tenant: 148 Sohier Road, Beverly, Massachusetts 01915

     Commencement Date: Part A, 1 October 1995; Part B, January 1, 1996

     Expiration Date: 30 September 2000

     Premises  Square  Footage:  

     Part A - 5,760 square feet; and

     Part B - 26,157  square  feet for a total of  approximately  31,917  square
feet.

     Building Square Footage: Approximately 39,576 square feet.

     Annual Fixed Rent Rate During Initial Term:

Part A (5,760 square feet): _________ 1, 1995 to December 31, 1995: $3,120/mo.

     Part A and B (31,917  square  feet):  
     January 1, 1996 to 
     August  31,  1998:  $17,288.38/mo.  
     September 1, 1998 to 
     August 31, 2000:  $18,136.13/mo.  



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     Permitted Uses:  Office,  light  manufacturing and storage 
     
     Security Deposit:  None 

     Broker: Hunneman Commercial Company,  Boston, MA; Mr. Greg Klemmer. 


     SECTION  1.2.  EXHIBITS.   The  following  Exhibits  are  attached  to  and
incorporated in this Lease:

     Exhibit A: Site Plan 

     Exhibit B: Plan of Premises (Part A & B) 

     Exhibit C: List of Hazardous  Substances  Used By Tenant  

     Exhibit D: List of  Environmental Reports


                                    SECTION 2

                                PREMISES AND TERM


     SECTION 2.1.  PREMISES.  Landlord hereby leases and demises the Premises to
Tenant and Tenant hereby leases the Premises from  Landlord,  subject to any and
all existing encumbrances and subject to the terms and provisions of this Lease.
Landlord is the owner in fee simple of the Premises, the Building, and the Site.
Tenant shall have the right of full and unrestricted  ingress to and egress from
the Premises.  

     Notwithstanding the foregoing, it is understood and agreed that (a) certain
property of Landlord may remain on the Premises after the Commencement Date, but
shall be removed by Landlord, at it's sole cost and expense on or before January
1, 1996 and (b) as of the date hereof,  there is no interior wall separating the
Premises  from  the  remaining  portion  of the  Building  not  included  in the
Premises. It is also understood that another tenant, Multilevel Metals, Inc., or
any successor occupant thereto, with reasonable notification to Converter Power,
Inc., shall have the right of full and  unrestricted  ingress to and egress from
the loading dock through the Leased Premises of Converter Power,  Inc. to access
Multilevel Metal,  Inc.'s (or such successor's)  Leased Premises as approved and
directed by Converter Power,  Inc. 

     SECTION 2.2.  TERM.  TO HAVE AND TO HOLD for an initial term (the  "Initial
Term")  beginning on the  Commencement  Date and ending on the Expiration  Date,
unless sooner  terminated  as  hereinafter  provided.  The initial Term shall be
subject to the extensions  provided for in Section 2.3. The Initial Term and the
Extended Term (as hereinafter  defined), if Tenant exercises its right to extend
this Lease in accordance  with the terms of Section 2.3,  shall be  collectively
referred to herein as the "Term".

     SECTION 2.3.  EXTENSION.  If no Event of Default (as  hereinafter  defined)
shall have occurred and be continuing  (either on the date that Tenant exercises
its right to extend the Term of this Lease or on the date that the Extended Term
is to commence),  Tenant is hereby  granted the right to extend the Term of this
Lease beyond the Initial Term for one  additional  5-year period (the  "Extended
Term"),  exercisable  upon not less than twelve (12) months prior written notice



                                      -2-






to Landlord.  During the Extended  Term, all of the terms and conditions of this
Lease shall continue in force and effect.  The annual fixed rent rate during the
extension  term shall be the fair rental  value of the  premises on September 1,
2000 but not less than the rent paid during the extension term shall be the fair
rental  value of the  premises on  September  1, 2000 but not less than the rent
paid during the last year of the original  term. The parties shall first attempt
to agree on fair rental value. In the event that the parties shall fail to agree
on fair  rental  value by January  1, 2000  respectively,  the  matter  shall be
submitted to arbitration under the rule of the American Arbitration Association.
Each party shall chose as an  arbitrator  a licensed  real estate  broker  whose
principal  business  is the  leasing of  commercial  real  estate in the greater
Beverly  Area,  and the two  arbitrators  shall choose a third  arbitrator  with
similar qualifications.  The decision of two arbitrators shall be binding on the
parties.   The  arbitrators  shall  attempt  to  reach  a  decision  before  the
commencement  of the  extended  term.  In the event that they have not reached a
decision by that time, the tenant shall pay the same rent as in the last year of
the  previous  term  and pay any  additional  rent  due  within  ten days of the
arbitrator's decision.



                                    SECTION 3

                              CONDITION OF PREMISES

     SECTION 3.1. Condition of Premises. Tenant agrees to accept the Premises in
its present "AS IS" condition.  Landlord shall have no obligation to perform any
work  or   construction.   If  Tenant  shall  desire  to  perform  any  work  or
construction,  the same  shall  be done  only in  accordance  with  this  Lease.
Landlord  represents  that the Premises has a Certificate of Occupancy to permit
its use for manufacturing, warehousing, and offices.



                                    SECTION 4

                                   FIXED RENT

     SECTION  4.1. THE FIXED RENT.  Tenant shall pay rent (the "Fixed  Rent") to
Landlord  at the  Address of  Landlord  or at such other  place or to such other
person or entity as Landlord  may by notice to Tenant from time to time  direct,
at the Annual  Fixed  Rent Rate set forth in  Section  1, in equal  installments
equal to 1/12th of the  Annual  Fixed  Rent Rate in  advance on the first day of
each  calendar  month  included  in the Term,  and for any portion of a calendar
month at the  beginning or end of the Term,  at that rate payable in advance for
such portion.

         SECTION  4.2.   ADDITIONAL  RENT.   Tenant's   Proportionate  Share  of
Additional Rent includes Utilities which is 14.6% for Premises Part A, and 66.1%
for Premises Part B (or a total of 80.7% for the entire Premises (As "Utilities"
are  hereinafter  defined in  Section  7.1),  shall be payable by Tenant  within
thirty (30) days after a reasonably  detailed  statement  of actual  expenses is
presented to Tenant by Landlord. At Landlord's option, however, an amount may be
estimated  by  Landlord  from time to time of  Tenant's  proportionate  share of
Additional  Rent and the same shall be payable  monthly,  during  each  12-month
period of the lease term, in advance,  on the first day of each  calendar  month
included in the Term,  and for any portion of a calendar  month at the beginning
or the end of the  Term,  at the rate  payable  in  advance  for  such  portion.
Landlord  shall deliver to Tenant within sixty (60) days after the expiration of



                                      -3-






each calendar year a reasonably  detailed  statement  showing  Tenant's Share of
Actual  Additional Rent incurred during the preceding year. If Tenant's payments
under this Section 4.2 during said preceding year exceed Tenant's  Proportionate
Share as  indicated  on said  statement,  Tenant shall be credited the amount of
such over-payment  against Tenant's  Proportionate Share of Additional Rent next
becoming due. If Tenant's  payment under this Section 4.2 during said  preceding
year are less than Tenant's  Proportionate Share as indicated on said statement,
Tenant shall pay to Landlord  the amount of the  deficiency  within  thirty (30)
days after the  delivery by Landlord to Tenant of said  statement.  Tenant shall
have the  opportunity  upon written  request to Landlord to review the books and
records of Landlord relating to the charges reflected in such statement and may,
within 60 days after the delivery of such statement,  contest any such statement
if Tenant reasonably  believes that it is inaccurate.  No such review or contest
shall affect the obligations of Landlord and Tenant to make credits and payments
on the  basis  of such  statements  as  aforesaid,  but upon  resolution  of any
contest, a readjustment of any such credit or payment shall promptly be made.



                                    SECTION 5

                           REAL ESTATE AND OTHER TAXES

     SECTION 5.1. REAL ESTATE TAXES.  Landlord,  at its sole cost, shall pay all
real  property  taxes and  general and  special  assessments  levied or assessed
against  the Site  during  the  Term,  excluding  any  increases  in such  taxes
resulting from (i)  improvements to the Premises made by or for Tenant,  or (ii)
any increase in such taxes assessed against the tax lot of which the Building is
a part above the taxes assessed for fiscal year 1995, plus 2-1/2%.  Any increase
in taxes  against the tax lot of which the Building is a part shall be allocated
proportionally  to the Premises based upon square footage of occupied  buildings
on such tax lot. Tenant shall reimburse  Landlord upon demand as Additional Rent
the amount of such  increases in taxes and  assessments.  

     SECTION 5.2. PERSONAL PROPERTY TAXES.  Tenant shall pay before  delinquency
all taxes, assessments, licenses, fees and other charges (Taxes) that are levied
or assessed against Tenant's personal property installed or located in or on the
Premises which become payable during the Term.  Upon Landlord's  demand,  Tenant
shall furnish  Landlord with  satisfactory  evidence of these  payments.  

     If any Taxes on Tenant's  personal  property are levied against Landlord or
Landlord's  property,  or if  the  assessed  value  of  Landlord's  property  is
increased  by the  inclusion of a value  placed on Tenant's  personal  property,
Tenant,  on demand,  shall immediately  reimburse  Landlord the sum of the Taxes
levied  against  Landlord  on  account of  Tenant's  personal  property,  or the
proportion  of the Taxes  resulting  from the  inclusion  of  Tenant's  personal
property in  Landlord's  assessment.  Landlord  shall have the right to pay such
Taxes  without  incurring  any  liability  to Tenant and  without  necessity  of
contesting  their  validity,  but will  assign all rights  Landlord  may have to
contest these Taxes to Tenant upon Tenant's written demand therefor.


                                      -4-




                                    SECTION 6
   
                                    INSURANCE

     SECTION 6.1.TENANT'S INSURANCE.  Tenant shall at all times during the Term
of the Lease maintain,  at its sole cost, a standard policy of fire and extended
coverage  insurance  in an amount  customary  in  reasonable  business  practice
covering Tenant's trade fixtures, furnishings,  equipment and all other items of
personal  property of Tenant as well as any minor  improvements  or Improvements
constructed  for or by Tenant and all property for which Tenant is  responsible.

     Tenant  shall also  maintain  during the Term of this Lease,  comprehensive
general public liability  insurance  covering its use, occupancy and maintenance
of the  Premises  and all  areas  appurtenant  thereto.  Such  coverage,  at the
commencement  of the Term,  shall have a minimum single limit of liability of at
least Two  Million  Dollars  ($2,000,000)  per  person and Two  Million  Dollars
($2,000,000) per occurrence and, from time to time during the Term, shall be for
such higher limits as are reasonably required by Landlord.  Such insurance shall
be written to apply to all bodily injury, property damage and other covered loss
during  the  Term  of  the  Lease.  Further,   Tenant  shall  maintain  Worker's
Compensation  insurance and all other legally required  insurance coverage in at
least the minimum amount mandated by statute. All of Tenant's insurance policies
shall provide  primary  coverage for the matters  covered thereby and Landlord's
insurance  shall  have  no  obligation  to  contribute.  Tenant's  policies  for
comprehensive  general  liability  shall name Landlord as an additional  insured
party.  

     SECTION 6.2. LANDLORD'S INSURANCE. Landlord, at its sole cost, shall obtain
and keep in force  during the Term of this  Lease a standard  policy of fire and
extended coverage insurance on the Site on which the Premises are located and in
an amount  customary  with  Landlord's  business  practice.  Landlord shall also
maintain  a  standard  policy of public  liability  insurance  insuring  against
liability arising out of Landlord's ownership of the Premises,  the Site and all
areas  appurtenant  thereto  in an amount of not less than Two  Million  Dollars
($2,000,000) per occurrence. 

     SECTION 6.3.  WAIVER OF  SUBROGATION.  Landlord  shall cause each insurance
policy carried by Landlord insuring the Premises against loss by fire and causes
covered by standard  extended  coverage,  and Tenant shall cause each  insurance
policy carried by Tenant and insuring the Premises and its fixtures and contents
against loss by fire and causes  covered by standard  extended  coverage,  to be
written in a manner so as to provide that the insurance company waives all right
of recovery by way of subrogation  against Landlord or Tenant in connection with
any loss or damage covered by any such  policies.  Neither party shall be liable
to the  other  for  any  loss or  damage  caused  by  fire  or any of the  risks
enumerated in standard extended coverage  insurance.  Tenant and Landlord shall,
upon obtaining the policies of insurance required hereunder,  give notice to the
insurance carrier or carriers that the foregoing mutual Waiver of Subrogation is
contained in this Lease.  This waiver of right of recovery  applies also to loss
or damage within  Landlord's or Tenant's  respective  deductible or self-insured
retentions.  

     SECTION 6.4.  INSURANCE  POLICIES.  Insurance  required of Tenant hereunder
shall  be  provided  by  companies  licensed  to do  business  in the  state  of



                                      -5-






Massachusetts,  satisfactory  to Landlord and having A.M.  Best's  rating of not
less than A. Prior to the  commencement  of this Lease,  Tenant shall deliver to
Landlord  copies  of  policies  of  insurance   required  under  this  Lease  or
certificates  evidencing  the existence and amounts of such  insurance.  No such
policy  shall be  cancelable  or  subject  to  reduction  of  coverage  or other
modification  except  after thirty (30) days prior  written  notice to Landlord.
Tenant shall,  at least thirty (30) days prior to the expiration or cancellation
of any or all such policies,  furnish  Landlord with renewals or binders thereof
or  replacement  policies;  if Tenant  fails to do so,  Landlord may obtain such
insurance  and charge the cost  thereof and  interest  thereon to Tenant,  which
amount shall be payable by Tenant upon demand.  Tenant shall not do or permit to
be done  anything on or about the  Premises  which shall  invalidate  any of the
insurance  policies  required to be carried hereunder or make any such insurance
unobtainable.  

                                   SECTION 7

                UTILITIES; MAINTENANCE EXPENSES; FIRE ALARMS AND
                               SPRINKLER SYSTEMS

     SECTION 7.1. UTILITIES.  Landlord shall provide  electrical,  water and gas
services  and  reasonable  amounts  of  compressed  air  to  the  Premises  (the
"Utilities"),  the cost of which shall be paid for by Tenant pursuant to Section
4.2.  Landlord shall not be liable for any interruption or failure in the supply
of any such utilities to the Premises.

     SECTION 7.2.  MAINTENANCE  EXPENSES.  To the extent  repairs or maintenance
covered  by  Section  9 are  required  due to  Tenant's  negligence  or  willful
misconduct,  Landlord  shall effect such repairs or maintenance at Tenant's sole
expense. 

     SECTION 7.3. FIRE ALARMS AND SPRINKLER SYSTEMS. Landlord shall maintain the
fire alarms and sprinkler systems for the Premises and fire  extinguishers  that
presently are located in Premises.



                                   SECTION 8
 
                              HAZARDOUS SUBSTANCES

     SECTION 8.1. USE OF HAZARDOUS SUBSTANCES. The term "Hazardous Substance" as
used in this Lease  shall mean any  product,  substance,  chemical,  material or
waste whose  presence,  nature,  quantity  and/or  intensity of existence,  use,
manufacture,  disposal,  transportation,  spill,  release or  effect,  either by
itself or in combination  with other  materials  expected to be on the Premises,
is: (i)  potentially  injurious  to the public  health,  safety or welfare,  the
environment  or the Premises,  (ii)  regulated or monitored by any  governmental
authority and/or (iii) a basis for liability to any governmental agency or third
party under any  applicable  statute or common law theory.  Hazardous  Substance
shall include, but not be limited to, hydrocarbons,  petroleum,  gasoline, crude
oil or any products,  by-products or fractions thereof.  Tenant shall not engage
in any  activity  in, on or about the  Premises  (or permit any of its agents or
employees  to  engage  in any  activity  in,  on or  about  the  Premise)  which
constitutes   the   generation,    possession,    manufacture,   storage,   use,
transportation,  handling,  treatment,  release,  deposit  and/or  disposal of a
Hazardous  Substance  except  in  strict  compliance  with  Applicable  Law  (as
hereinafter defined), and provided,  such generation,  possession,  manufacture,
storage,  use,  transportation,  handling,  treatment,  release,  deposit and/or
disposal of Hazardous Substance does not expose the Premises,  the Building, the




                                      -6-






Site and/or  neighboring  properties to any risk of contamination or damage,  or
expose  Landlord  or any  Lender  (as  hereinafter  defined)  to  any  liability
therefor. Notwithstanding anything to the contrary contained herein, in no event
shall Tenant,  its agents,  employees,  contractors,  social guests, or business
invitees (a) generate,  possess,  manufacture,  store, use,  transport,  handle,
treat, release, deposit and/or dispose of any Hazardous Substance other than the
Hazardous  Substances  identified  on Exhibit C attached  hereto,  which may not
exceed the specific volume or quantities  identified therein,  without the prior
written  consent of Landlord,  which consent may by withheld in Landlord's  sole
and absolute  discretion  and/or (b)  introduce,  in any manner,  any  Hazardous
Substances in or through the plumbing and/or sewer systems servicing any portion
of the Site.  Without  limiting  the  foregoing,  Tenant  shall  introduce  only
domestic  sewage  into  the  plumbing  and  sewer  systems  in  compliance  with
Applicable  Laws,  including the rules and  regulations of the South Essex Sewer
District.  In addition,  with respect to the presence,  generation,  possession,
manufacture, storage, use, transportation, handling, treatment, release, deposit
and/or  disposal of any Hazardous  Substance in, on, under or about the Premises
as  may be  allowed  hereunder,  Tenant  shall  give  Landlord  such  additional
assurances  as  Landlord,  in  its  subjective,  good  faith  discretion,  deems
necessary to protect itself,  the public, the Premises,  the Building,  the Site
and the environment  against damage,  contamination  or injury and/or  liability
therefrom  or therefor,  including,  but not limited to, the  installation  (and
removal on or before the  expiration  or earlier  termination  of this Lease) of
reasonably necessary protective  modifications to the Premises (such as concrete
encasements   or  other   containments),   provided  that  no  such   protective
modifications  applicable  to the use of the items  listed  on  Exhibit C may be
required in excess of measures  necessary to comply with  Applicable Law. Tenant
shall  be  solely   responsible  for  providing  any  notice  of  the  presence,
generation,  possession,  manufacture,  storage, use, transportation,  handling,
treatment,  release,  deposit  and/or  disposal of any  Hazardous  Substance  to
persons occupying or entering the Premises,  the Building and/or the Site and to
neighboring  properties.  Upon the  expiration  or earlier  termination  of this
Lease,  Tenant shall, at its sole cost and expense,  upon Landlord's request and
in compliance with all Applicable  Laws: (i) remove,  remediate,  abate,  and/or
dispose of any Hazardous  Substance stored or otherwise located in, on, under or
about the Premises, the Building and/or the Site (including, without limitation,
general  decontamination  of workspaces  and  duct-work) by Tenant,  its agents,
employees,  contractors,  social  guests,  or business  invitees;  (ii)  remove,
remediate,  abate,  dispose of and/or  replace any soil (and compact the same as
then  required  by law or by  Landlord)  contaminated  by  Tenant,  its  agents,
employees,   contractors,   social  guests,  or  business  invitees;  and  (iii)
remediate,  remove,  abate and/or dispose of any surface water,  or ground water
contaminated by Tenant, its agents,  employees,  contractors,  social guests, or
business  invitees;  such that the Premises,  the Building and the Site are free
from any Hazardous  Substances  which were generated,  possessed,  manufactured,
stored, used, transported, handled, treated, released, deposited and/or disposed
of by Tenant,  its agents,  employees,  contractors,  social guests, or business
invitees.  

     SECTION 8.2. DUTY TO INFORM  LANDLORD.  If Tenant knows,  or has reasonable
cause to  believe,  that a Hazardous  Substance,  or a  condition  involving  or
resulting from same, has come to be located in, on, under or about the Premises,
other than as previously consented to by Landlord, Tenant shall immediately give



                                      -7-





oral  notice of such fact to  Landlord,  followed as soon as possible by written
notice to Landlord.  Such oral and written  notice shall be made for any release
or  discharge  of any  quantity  of  Hazardous  Material at the site that (i) is
likely  to come in  contact  with soil or  groundwater  or (ii) is more than one
pound by weight or (iii)  cannot be cleaned up within 15  minutes.  Such  notice
shall  include a complete  description  of the type and  quantity  of  Hazardous
Material  released or  discharged,  the location of the release or discharge and
the regulatory agencies notified.  Tenant shall also immediately give Landlord a
copy  of any  statement,  report,  notice,  registration,  application,  permit,
business plan, license,  claim, action or proceeding given to, or received from,
any  governmental  authority or private party, or persons  entering or occupying
the Premises, concerning the presence, spill, release, discharge of, or exposure
to, any  Hazardous  Substance or  contamination  in, on, or about the  Premises.
Tenant acknowledges that it, and not Landlord,  is in charge of the Premises for
purposes of all reporting  requirements  under any Applicable Law.  

     SECTION 8.3. INDEMNIFICATION.  Tenant shall indemnify,  protect, defend and
hold Landlord its agents, employees,  partners,  co-managing directors, lenders,
the  Premises,  the Building and the Site  harmless from and against any and all
loss of rents and/or damages,  liabilities,  judgments,  costs,  claims,  liens,
expenses, penalties, permits and attorneys' and consultants' fees arising out of
or involving the presence, generation,  possession,  manufacture,  storage, use,
transportation,  handling,  treatment,  release,  deposit and/or disposal of any
Hazardous  Substance  in,  on,  under  or from  the  Premises  on or  after  the
Commencement  Date and continuing  during the Term and any extension thereof due
to the activities of Tenant, its agents, employees,  contractors,  social guests
or  business  invitees  on or about the Site.  Tenant's  obligations  under this
Section 8 shall include, but not be limited to, the effects of any contamination
or injury to person,  property or the environment created or suffered by Tenant,
its agents, employees, contractors, social guests, or business invitees, and the
cost  of  investigation   (including,   without  limitation,   consultants'  and
attorneys'  reasonable  fees and  testing),  removal,  remediation,  restoration
and/or abatement thereof, or of any contamination therein involved and any costs
and fees  related to the  generation,  possession,  manufacture,  storage,  use,
transportation,  handling,  treatment,  release,  deposit and/or disposal of any
Hazardous  Substances  by Tenant,  its agents,  employees,  contractors,  social
guests,  or  business  invitees,  and shall  survive the  expiration  or earlier
termination of this Lease.  No termination,  cancellation  or release  agreement
entered into by Landlord and Tenant shall  release  Tenant from its  obligations
under this Lease with respect to Hazardous  Substances,  unless  specifically so
agreed by  Landlord  in writing at the time of such  agreement.  

     Landlord shall indemnify,  protect, defend and hold Tenant, its agents, and
employees, harmless from and against any and all claims by third parties against
Tenant for loss of rents and/or damages, liabilities,  judgments, costs, claims,
liens, expenses, penalties, permits and attorneys' and consultants' fees arising
out of or involving the presence, generation, possession,  manufacture, storage,
use, transportation,  handling,  treatment,  release, deposit and/or disposal of
any Hazardous  Substance in, on, under or from the Site before the  Commencement
Date or due to the activities of Landlord, its agents,  employees,  contractors,
social guests, or business invitees on or about the Site. Landlord's obligations
under this  Section 8 shall  include,  but not be limited to, the effects of any
contamination  or injury to  person,  property  or the  environment  created  or
suffered by Landlord or the prior tenants of the Site,  and the cost of Tenant's
investigation   (including  consultant's  and  attorney's  reasonable  fees  and



                                      -8-





testing), removal, remediation,  restoration and/or abatement thereof, or of any
contamination therein involved and any costs and fees related to the generation,
possession,  manufacture,  storage, use,  transportation,  handling,  treatment,
release,  deposit and/or disposal of any Hazardous  Substances by Landlord,  its
agents, employees,  contractors,  social guests, or business invitees, and shall
survive  the  expiration  or earlier  termination  of this Lease.  

     SECTION  8.4.  HAZARDOUS  SUBSTANCE  HANDLING.  Tenant  shall,  at its  own
expense,  procure,  maintain in effect and comply with all conditions of any and
all permits,  licenses and other governmental and regulatory  approvals required
for  Tenant's  use of the  Premises.  Subject to  Tenant's  compliance  with the
provisions of this Section 8, Tenant shall cause any and all Hazardous Substance
used, stored, released,  generated,  manufactured or produced on the Premises to
be removed,  transported and disposed of solely by duly licensed haulers to duly
licensed facilities for final disposal of such Hazardous Substance.  In no event
shall  Tenant  dispose of any  Hazardous  Substance  on, in,  under or about the
Premises. Upon the expiration or earlier termination of this Lease, Tenant shall
cause all  Hazardous  Substance to be removed from the Premises and  transported
for use,  storage or disposal in accordance and  compliance  with all Applicable
Law.  Tenant shall not take any  remedial  action in response to the presence of
any Hazardous Substance in or about the Premises,  nor enter into any settlement
agreement,  consent  decree or other  agreement  in respect to any  complaint or
claim  relating  to any  Hazardous  Substance  in any  way  connected  with  the
Premises,  without first notifying  Landlord of Tenant's  intention to do so and
affording  Landlord  ample  opportunity  to  appear,   intervene  and  otherwise
appropriately assert and protect Landlord's and Landlord's predecessor's, Varian
Associates,  Inc.  ("Varian")  interests in the  contemplated  action;  however,
notwithstanding   anything  to  the  contrary  contained  herein,  Tenant  shall
immediately take any action as necessary to respond to any spills or releases of
Hazardous Substances and shall immediately inform Landlord of the details of all
such events and such  actions  taken.  

     SECTION 8.5. WAIVER AND RELEASE. Tenant acknowledges that Landlord has made
available to Tenant the environment reports regarding the Site listed on Exhibit
D attached  hereto and that no  environmental  testing has been performed on the
Premises or the Building,  so that Landlord and Tenant have no knowledge whether
any Hazardous  Substances are present in, on, under or about the Premises or in,
under or about the Building (except to the extent that any Hazardous  Substances
are utilized by Landlord in connection with the operation of its business in the
Building  or the  presence  of any  Hazardous  Substances  is  disclosed  in the
environmental reports listed on Exhibit D). Subject to the provisions of section
8.3, Tenant hereby waives, releases and discharges Landlord and Varian, and each
of  Landlord's  and  Varian's  officers,  directors,   shareholders,   partners,
employees, agents,  representatives,  attorneys, successors and assigns from any
and  all  environmental   suits,  causes  of  action,  legal  or  administrative
proceedings,  liabilities,  claims,  damages,  losses,  costs  and  expenses  of
whatever  kind,  or  unknown,  including  any  action  under  the  Comprehensive
Environmental Reponse, Compensation and Liability Act (42 U.S.C. Section 9601 et
seq.), as amended  ("CERCLA") and the provisions of the Massachusetts  Hazardous
Waste  Management Act, M.G.L.  c. 21 C and the  Massachusetts  Oil and Hazardous
Material Release  Prevention and Response Act, M.G.L. c. 21E, as amended,  which
Tenant  has  or  may  have,  based  upon  the  presence,  discharge,  treatment,
recycling, use, migration, storage, generation, release, or transportation to or



                                      -9-





from the Premises of any Hazardous  Substance or the environmental  condition of
the  Premises  (including  without  limitation  all  facilities,   improvements,
structures  and equipment  thereon and soil and  groundwater  thereunder) on and
after the Commencement  Date.  

     SECTION 8.6. ENVIRONMENTAL  REMEDIATION.  Tenant acknowledges that Landlord
has informed  Tenant that  Landlord and Varian are in the process of  conducting
investigations of the Hazardous  Substances  located on the Site  (collectively,
the   "Investigations")  and  that  Landlord  and  Varian  shall  complete  such
remediation of the Site as Landlord and Varian deem  appropriate  based upon the
results of such investigations (the "Remediation").  Notwithstanding anything to
the contrary contained herein,  Landlord and Varian reserve the right to conduct
and complete the Investigations and Remediation on the Site, including,  without
limitation, in, under and about the Premises, and, to that end, Landlord and its
agents,  consultants  and  employees  including  Varian  employees,  agents  and
consultants  shall have the right to enter upon the  Premises to  undertake  the
Investigations and Remediation, and Tenant's use and access to the Premises, the
Building,  the  parking  areas  and the Site may be  limited  by the  activities
conducted by Landlord and Varian and Landlord's and Varian's agents, consultants
and employees in connection with the Investigations  and Remediation;  provided,
however that  Landlord and Varian shall use  reasonable  efforts to minimize any
limitation of and/or disruption to Tenant's use and access to the Premises,  the
Building,  the parking areas and the Site as a result of the  Investigations and
Remediation on the Site.  Without limiting the foregoing,  Landlord reserves the
right to re-assign parking spaces to Tenant; provided, however, that in no event
shall less than one hundred thirty (130) parking spaces be assigned to Tenant at
any time during the Term.  

     SECTION 8.7.  COOPERATION  WITH VARIAN.  Tenant shall cooperate with Varian
and  Landlord  in the  conduct  of  Investigations  and  Remediation,  shall not
unreasonably  interfere  with  Varian's  activities  and  shall  cooperate  with
Varian's  efforts to accomplish the  Investigations  and  Remediations in a cost
effective and reasonable  manner.  Tenant shall provide Landlord with reasonable
written  notice of any  construction  at or  alterations  to the site  which may
adversely affect such  Investigations and Remediation.  Provided Tenant complies
with this  Section  8.7, if the  exercise of rights  under  Section 8.6 deprives
Tenant of the use of a  material  portion of the  Premises  for more than 5 days
after notice to Landlord,  Tenant shall be entitled to an equitable abatement of
rent until such use is restored.  

     SECTION  8.8.  COOPERATION  WITH  AGENCIES.  Tenant  shall  cooperate  with
governmental  agencies to the extent reasonably  necessary for Varian to perform
the Investigations and Remediation.  

     SECTION  8.9.  PERFORMANCE  OF TESTING.  Tenant  shall  provide  reasonable
advance written notice to Landlord,  which notice shall not be less than fifteen
(15)  working  days  (unless  a  shorter  period  is  necessitated  by  legal or
regulatory  requirements,  in which case  notice  shall be  provided  as much in
advance  as  is  reasonably  practical),  before  performing  or  causing  to be
performed any Hazardous  Material  testing of the soils,  groundwater or surface
waters at or near the site, including installation of soil borings or monitoring




                                      -10-





wells or testing of soils,  groundwater or surface waters. Tenant shall promptly
furnish  Landlord with a copy of all test results.  

     SECTION 8.10. OSHA ASBESTOS NOTIFICATION. Pursuant to 29 CFR ss. 1910.1001,
Landlord  hereby  notifies  Tenant that  Landlord has good cause to believe that
asbestos  containing  materials or materials  presumed to contain  asbestos,  as
those terms are defined in the OSHA regulations identified above, are located in
the  Premises.  The  materials  containing  or presumed to contain  asbestos are
located in vinyl asbestos tiles and in roofing  materials.  

                                    SECTION 9

                              LANDLORD'S COVENANTS

     SECTION 9.1. BUILDING  MAINTENANCE.  Subject to 7.2, Sections 8, 10 and 11,
Landlord shall maintain and repair the exterior walls (exclusive of the interior
surfaces of the exterior walls,  all of which Tenant shall maintain and repair),
doors, windows, roof,  foundation,  structural supports of the Building and, the
Building's  and  Premises'  heating  and  ventilation.  Landlord  shall  have no
obligation  to make any such repairs  until a reasonable  time after  Landlord's
receipt of written  notice from  Tenant  specifying  the need for such  repairs.
Notwithstanding the foregoing, any emergency repairs shall be done as quickly as
practicable.  

     SECTION 9.2.  COMMON AREA  MAINTENANCE.  Subject to Sections 7.2, 8, 10 and
11, Landlord shall maintain and repair the common areas of the Building, if any,
and the common areas on the Site,  including all  sidewalks,  access  driveways,
parking lot area, exterior light standards and fences.  Landlord shall clean and
provide  snowplowing  and  landscaping  for the  same.  Landlord  shall  have no
obligation  to make any such repairs  until a reasonable  time after  Landlord's
receipt of written  notice from  Tenant  specifying  the fees for such  repairs.
Tenant has the right to install  vending  machines with prior written consent of
Landlord which approval shall not be unreasonably  withheld or delayed.  Section
9.3. Cafeteria Service. Landlord shall make available food service at Landlord's
main  Cafeteria  on the Site which may be purchased  by Tenant's  employees  and
visitors.  Tenant may install vending  machines in the Premises using Landlord's
vending machine  supplier.  

                                   SECTION 10

                               TENANT'S COVENANTS

     SECTION  10.1.  USE.  Tenant shall use the Premises  only for the Permitted
Uses and shall from to time procure all licenses and permits necessary  therefor
at Tenant's  sole  expense.  In no event may Tenant's use of the  Premises,  the
parking area or any of the common areas of the Building or Site  interfere  with
the use of the Site by Landlord and/or other occupants of the Site.

     SECTION 10.2.  TRASH AND JANITORIAL  SERVICE.  Tenant shall keep in a safe,
secure and sanitary  condition all trash and rubbish  temporarily  stored at the
Premises  (which shall be stored at a location on the Site to be mutually agreed
upon by Tenant and Landlord) and shall arrange for and be responsible for all of
the costs of a trash and rubbish  removal and  janitorial  service in connection
with Tenant's use of the Premises.




                                      -11-



     SECTION 10.3. TENANT'S COMPLIANCE WITH LAW. Tenant, shall, at Tenant's sole
cost and expense,  fully,  diligently  and in a timely  manner,  comply with all
"Applicable  Law," which term is used in this Lease to include all laws,  rules,
regulations,   ordinances,   orders,   directives,   covenants,   easements  and
restrictions  of  record,  permits,  the  requirements  of any  applicable  fire
insurance  underwriter or rating bureau,  and the  recommendations of Landlord's
engineers and/or consultants,  relating in any manner to the Premises (including
but  not  limited  to  matters  pertaining  to  (i)  industrial  hygiene,   (ii)
environmental conditions on, in, under or about the Premises, including soil and
ground water conditions,  and (iii) the presence, use, generation,  manufacture,
production,   installation,   maintenance,  removal,  disposal,  transportation,
storage,  spill or release of any Hazardous  Substance or storage tank),  now in
effect or which may hereafter come into effect,  and whether or not reflecting a
change in Applicable Law or policy from any previously  existing  Applicable Law
or policy Tenant shall, within five (5) days after receipt of Landlord's written
request,  provide  Landlord  with  copies  of  all  documents  and  information,
including, but not limited to, permits, registrations,  manifests, applications,
reports and certificates, evidencing Tenant's compliance with any Applicable Law
specified by Landlord,  and shall  immediately upon receipt,  notify Landlord in
writing  (with copies of any  documents  involved) of any  threatened  or actual
claim, notice, citation, warning, complaint or report pertaining to or involving
failure by Tenant or the Premises to comply with any Applicable Law.

     SECTION 10.4. INSPECTION;  COMPLIANCE.  Landlord,  Varian and/or any Lender
shall  have the right to enter the  Premises  at any time,  provided  that prior
notice  is  given  except  in the  case  of an  emergency,  for the  purpose  of
inspecting the condition of the Premises and for verifying  compliance by Tenant
with this Lease and all Applicable Law, and to employ experts and/or consultants
in  connection  therewith  and/or to advise  Landlord  with  respect to Tenant's
activities,  including  but not  limited to the  installation,  operation,  use,
monitoring, maintenance, or removal of any Hazardous Substance on, under or from
the Premises.  The costs and expenses of any such  inspections  shall by paid by
the party requesting same,  unless an Event of Default,  violation of Applicable
Law, or a contamination,  caused or materially contributed to by Tenant is found
to exist or be imminent in Landlord's subjective, good faith judgment, or unless
the inspection is requested or ordered by a governmental authority as the result
of any such existing or imminent  violation or contamination.  In any such case,
Tenant shall upon request  reimburse  Landlord and/or the applicable  Lender, as
the case may be, for the costs and expenses of such inspections.

     SECTION 10.5.  BUILDING  CONTAMINANTS.  Without  limiting the provisions of
Section 8, to prevent the generation,  growth,  or deposit of any mold,  mildew,
bacillus,  virus, pollen or other micro-organism  (collectively,  "Biologicals")
and the deposit,  release or circulation of any indoor  Contaminants,  including
emissions from paint, carpet and drapery treatments,  cleaning,  maintenance and
construction  materials  and  supplies,   pesticides,   pressed  wood  products,
insulation,  and other materials and products  (collectively  with  Biologicals,
"Contaminants"),  that could adversely  affect the health,  safety or welfare of
any tenant, employee, or other occupant of the Building or their invitees (each,
an "Occupant"),  Tenant shall,  at Tenant's sole cost and expense,  at all times
during the Term (i) operate the Premises in such a manner to prevent or minimize
the accumulation of stagnant water and moisture in planters,  kitchen appliances
and vessels, carpeting,  insulation, water coolers and any other locations where
stagnant  water and moisture could  accumulate  and (ii)  otherwise  operate the
Premises to prevent the generation,  growth, deposit,  release or circulation of
any Contaminants. If any



                                      -12-




governmental  entity or any Occupant alleges that health,  safety or welfare has
or could be  adversely  affected by any such  Contaminants,  Tenant shall notify
Landlord in writing within  twenty-four (24) hours of the time the allegation is
made.  Landlord may then elect to engage the services of an  industrial  hygiene
testing  laboratory (or  alternatively or concurrently  require Tenant to do the
same) to determine  whether the cause of any alleged adverse health effect is or
could be attributable to any  Contaminants  present within the Premises.  Tenant
shall  be  responsible  for all such  testing  costs  and for any  consequential
damages and costs (including,  without limitation,  any third-party claims, loss
of  rental,  remediation,  removal  and/or  abatement  costs,  and  increase  in
insurance  premiums)  resulting  from Tenant's  failure to comply in whole or in
part with the terms of this Section 10.5.  

     SECTION  10.6.  TENANT'S  WORK.  Tenant  shall not make any  installations,
alterations,  additions or improvements (collectively, the "Improvements") in or
to the  Premises  costing  in the  aggregate  more  than  Ten  Thousand  Dollars
($10,000) and/or requiring a building permit, including, without limitation, any
apertures in the walls, partitions, ceilings or floors, without on each occasion
obtaining  the prior  written  consent of Landlord,  which  consent shall not be
unreasonably  withheld. Any such work so approved by Landlord shall be performed
only in accordance with plans and specifications  therefor approved by Landlord.
Plans  and  specifications  pertaining  to any  proposed  Improvements  must  be
submitted to Landlord for  approval,  along with the name of the  contractor  to
perform  such  work,  at least  thirty  (30) days prior to the  commencement  of
construction of the Improvements.  Tenant shall procure at Tenant's sole expense
all necessary  permits and licenses before  undertaking any work on the Premises
and shall  perform  all such  work in a good and  workmanlike  manner  employing
materials  of good  quality  and so as to conform  with all  applicable  zoning,
building,  fire,  health and other codes,  regulations,  ordinances and laws and
with all applicable insurance requirements. If reasonably requested by Landlord,
Tenant shall furnish to Landlord  prior to the  commencement  of any such work a
bond or other  security  acceptable  to  Landlord  assuring  that any work to be
performed by, or on behalf of, Tenant,  will be completed in accordance with the
approved plans and  specifications.  Tenant shall keep the Premises at all times
free of liens for labor and materials.  If any such lien is filed, Landlord may,
but  shall  not be  required  to,  take  such  action  as  Landlord  in its sole
discretion  deems  necessary  to  remove  all such  liens,  Tenant  shall pay to
Landlord  upon demand the amounts  expended by Landlord in causing such removal,
together with interest thereon at the Delinquency Rate (as hereinafter  defined)
from and including the date of Landlord's expenditure until the date Landlord is
reimbursed by Tenant.

     In  connection  with the  construction  of all  Improvements,  Tenant shall
engage a  contractor  (licensed  to  conduct  business  in the  Commonwealth  of
Massachusetts)  who shall obtain and maintain  general  liability  insurance and
property  damage  insurance and workers'  compensation  insurance in amounts not
less than required of Tenant under Section 6 and such  policies  (excluding  the
workers'  compensation  insurance) shall name Landlord as an additional  insured
and will be  issued  by  insurance  companies  licensed  to do  business  in the
Commonwealth  of  Massachusetts,  satisfactory  to  Landlord  and having an A.M.
Best's  rating of not less than A.  Certificates  of insurance  relative to such
policies  shall  be  delivered  to  Landlord  prior  to  the   commencement   of
construction of any Improvements.



                                      -13-



     Tenant shall save  Landlord  harmless and  indemnified  from all  injuries,
losses, costs (including, without limitation),  claims and damages to any person
or property  occasioned by or growing out of such work. Landlord may inspect the
work of Tenant at reasonable times and give notice of observed defects.

     SECTION  10.7.  INDEMNITY.  Tenant shall defend,  with counsel  approved by
Landlord,  all actions  against  Landlord,  any partner,  trustee,  stockholder,
officer, director, employee or beneficiary of Landlord, holders of mortgages now
or hereafter secured by the Building and/or the Site  (collectively,  "Lenders")
and any other party having an interest in the Premises,  the Building and/or the
Site  (collectively,  "Indemnified  Parties")  with  respect  to, and shall pay,
protect,  indemnify  and save  harmless,  to the extent  permitted  by law,  all
Indemnified Parties from and against, any and all liabilities,  losses, damages,
costs, expenses (including  reasonable attorneys' fees and expenses),  causes of
action,  suits,  claims,  demands or  judgments  of any nature  arising from (a)
injury to or death of any person, or damage to or loss of property, occurring in
the  Premises or connected  with the use,  condition or occupancy of any thereof
unless  caused by the  negligence  of Landlord or its servants or agents,  or by
another  Tenant,  or its  servants  or agents,  (b)  violation  of this Lease by
Tenant,  or (c) any act, fault,  omission,  or other misconduct of Tenant or its
agents, contractors, licensees, sublicenssees or invitees.

     SECTION 10.8.  LANDLORD'S RIGHT TO ENTER. Without limiting any provision of
Section  10.4,  Tenant  shall  permit  Landlord and its agents to enter into the
Premises at reasonable times and upon reasonable notice to examine the Premises,
make such repairs and replacements as Landlord may be required to make under the
terms of this Lease or may elect,  without however, any obligation to do so, and
show the Premises to prospective  purchasers and Lenders,  and,  during the last
year of the  Term,  to show the  Premises  to  prospective  tenants  and to keep
affixed in suitable places notices of availability of the Premises.

     SECTION  10.9.   PERSONAL  PROPERTY  AT  TENANT'S  RISK.  All  furnishings,
fixtures,  equipment,  effects  and  property of every kind of Tenant and of all
persons claiming by, through or under Tenant which may be on the Premises, shall
be at the sole risk and  hazard of Tenant  and if the whole or any part  thereof
shall be destroyed or damage by fire,  water or otherwise,  or by the leakage or
bursting of water pipes, steam pipes, or other pipes, by theft or from any other
cause,  no part of said loss or  damage  shall be  charged  to or to be borne by
Landlord, except that Landlord shall in no event be indemnified or held harmless
or  exonerated  from any  liability  to Tenant for any injury,  loss,  damage or
liability  not covered by Tenant's  insurance to the extent  prohibited  by law.
Tenant shall insure Tenant's personal property.

     SECTION 10.10. PAYMENT OF LANDLORD'S COST OF ENFORCEMENT. Tenant shall pay,
on  demand,  Landlord's  expenses,  including  reasonable  attorneys'  fees  and
expenses,  incurred  in  enforcing  any  obligation  of Tenant  under this Lease
(including,  without  limitation,  enforcing any  indemnification  agreement set
forth herein) or in curing any default of Tenant under this Lease as provided in
Section 12.4.

     SECTION  10.11.  YIELD  UP.  At the  expiration  of  the  Term  or  earlier
termination  of this Lease,  Tenant shall  surrender  all keys to the  Premises,
remove all of its trade fixtures and personal  property in the Premises,  remove
such installations and improvements made by Tenant as Landlord



                                      -14-



may request and all Tenant's signs wherever located, repair all damage caused by
such  removal  and  yield  up the  Premises  (including  all  installations  and
improvements made by Tenant except for trade fixtures and such  installations or
improvements  made by  Tenant  as  Landlord  shall  request  Tenant  to  remove)
broom-clean  and in the same good order and repair in which Tenant is obliged to
keep and  maintain the  Premises  under this Lease.  Any property not so removed
shall be deemed abandoned and may be removed and disposed of by Landlord in such
manner as Landlord shall determine and Tenant shall pay Landlord the entire cost
and expense  incurred by it in  effecting  such removal and  disposition  and in
making any incidental  repairs and  replacements to the Premises and for use and
occupancy  during  the  period  after  the  expiration  of the Term and prior to
Tenant's performance of its obligations under this Section 10.11. 

     SECTION 10.12. ESTOPPEL  CERTIFICATE.  Upon not less than five (5) business
days' prior notice by Landlord, Tenant shall execute, acknowledge and deliver to
Landlord a statement in writing  certifying that this Lease is unmodified and in
full  force and  effect  and  that,  except as  stated  therein,  Tenant  has no
knowledge of any defenses,  offsets or counterclaims  against its obligations to
pay the Fixed Rent and Additional  Rent and any other charges and to perform its
other covenants under this Lease (or, if there have been any modifications  that
the Lease is in full force and effect as modified and stating the  modifications
and, if there are any defenses, offsets or counterclaims,  setting them forth in
reasonable  detail),  the dates to which the Fixed Rent and Additional  Rent and
other  charges  have been paid and a  statement  that,  to the best of  Tenant's
knowledge,  that  Landlord  is not in  default  hereunder  (or if Tenant  claims
Landlord is in default,  the nature of such default, in reasonable detail).  Any
such  statement  delivered  pursuant to this Section 10.12 may be relied upon by
any prospective purchaser or mortgagee of the Building and/or the Site.

     SECTION  10.13.  LANDLORD'S  EXPENSES RE CONSENTS.  Tenant shall  reimburse
Landlord promptly on demand for all out-of-pocket  expenses  reasonably incurred
by Landlord in  connection  with all  requests by Tenant for consent or approval
hereunder.  Out of pocket  expenses shall not include any legal fees incurred by
Landlord.

     SECTION  10.14.  RULES  AND  REGULATIONS.  Tenant  shall  comply  with such
reasonable Rules and Regulations as may be adopted from time to time by Landlord
to provide for the beneficial operation of the Site and Building.

     SECTION 10.15.  HOLDING OVER. Tenant shall vacate the Premises  immediately
upon the  expiration  or sooner  termination  of this Lease.  If Tenant  retains
possession of the Premises or any part thereof after the termination of the term
without Landlord's express consent, Tenant shall pay Landlord Fixed Rent for the
time Tenant thus remains in  possession in an amount equal to the greater of (i)
the then  current  Annual Fixed Rent Rate  specified in Section 1 multiplied  by
1.25 or (ii) one hundred  twenty-five  percent (125%) of the then current market
rate for similar space in the same general geographic area as the Premises, and,
in addition thereto,  shall pay Landlord for all damages,  consequential as well
as  direct,  sustained  by reason  of  Tenant's  retention  of  possession.  The
provisions of this Section 10.15 do not exclude Landlord's rights of re-entry or
any other right hereunder,  including  without  limitation,  the right to remove
Tenant through summary proceedings for holding over beyond the expiration of the
Term.



                                      -15-



     SECTION  10.16.  ASSIGNMENT  AND  SUBLETTING.   Tenant  shall  not  assign,
transfer, mortgage or pledge this Lease or grant a security interest in Tenant's
rights hereunder or sublease (which term shall be deemed to include the granting
of  concessions  and  licenses  and the like) all or any part of the Premises or
suffer or permit this Lease or the leasehold  estate hereby created or any other
rights arising under this Lease to be assigned,  transferred  or encumbered,  in
whole or in part, whether voluntarily,  involuntarily or by operation of law, or
permit the occupancy of the Premises by anyone other than Tenant.  Any attempted
assignment,  transfer, mortgage, pledge, grant of security interest, sublease or
other  encumbrance,  except with prior  written  approval  thereof from Landlord
which approval shall not be unreasonably withheld or delayed,  shall be void. No
assignment,  transfer,  mortgage, grant of security interest,  sublease or other
encumbrance,  whether or not approved,  and no indulgence granted by Landlord to
any  assignee  or  sublessee,  shall in any way  impair the  continuing  primary
liability  (which  after  an  assignment  shall be joint  and  several  with the
assignee) of Tenant hereunder, and no approval in a particular instance shall be
deemed to be a waiver of the  obligation  to obtain  Landlord's  approval in any
other case.

     Landlord shall not be deemed to have unreasonably withheld its consent to a
proposed assignment or subletting if (a) the financial  strength,  net worth and
creditworthiness of the proposed assignee or sublessee are not at least equal to
that of the  existing  Tenant  both at the time of the  proposed  assignment  or
subletting and at the date hereof;  (b) the business  reputation of the proposed
assignee or sublessee is not in accordance  with generally  accepted  commercial
standards or is not at least equal to that of the existing  Tenant,  both at the
time of the proposed  assignment and at the date hereof;  (c) the gross revenues
reasonably  anticipated  to be  received  from the  conduct of  business  on the
Premises by the proposed assignee or sublessee are not at least equal to that of
the existing  Tenant both at the time of the proposed  assignment  or subletting
and as of the date hereof;  (d) the use of the Premises by the proposed assignee
or subtenant will violate or create any potential  violation of Applicable  Law;
and (e) the use of the Premises will violate any other agreements  affecting the
Premises,  the Building,  the Site or Landlord.  In connection with any proposed
assignment or  subletting,  Tenant shall provide to landlord such  financial and
other information relating to the proposed assignee or sublessee as Landlord may
reasonably request.

     If for any  assignment  or  sublease  Tenant  shall  receive  rent or other
consideration,  either initially or over the term of the assignment or sublease,
in excess of the rent called for  hereunder  (or in the case of the  sublease of
part,  in  excess  of  such  rent  allocable  to  the  part)  after  appropriate
adjustments  to assure that all other  payments  called for  hereunder are taken
into account,  Tenant shall pay to Landlord,  as Additional Rent, ninety percent
(90%) of such excess of such payment of rent or other consideration  received by
Tenant, promptly after its receipt.

     For the purposes of this Section  10.16,  the term "assign" shall be deemed
to  include  any one or more  sales,  pledges or other  transfers  of (i) any of
capital  stock of any class of  Tenant,  (ii) ten  percent  (10%) or more of the
capital  assets or income  interest  in  Converter  Power  Inc.  Notwithstanding
anything contained herein to the contrary,  Landlord's consent to any assignment
or  sublease  shall be  conditioned  upon the consent  thereto  from any and all
Lenders. 



                                      -16-



     Notwithstanding the foregoing, Landlord's consent shall not be required (i)
for a sublease or assignment to any entity  controlled by,  controlling or under
common  control with Tenant,  or (ii) for an assignment to any entity which is a
successor to Tenant by virtue of the acquisition of all or substantially  all of
the assets or voting shares of Tenant,  provided that in all cases under clauses
(i) and (ii) above no  assignment  or  subletting  shall  affect the  continuing
primary  liability  of Tenant  (which  following  assignment  shall be joint and
several  with  the  assignee),  and  provided  further  that  Tenant's  right of
assignment under clause (ii) above shall be conditioned upon Landlord's  written
acknowledgment,  which it shall not unreasonably withhold,  that it has received
from  Tenant,  at least 15 days prior to any  proposed  assignment  pursuant  to
clause  (ii),  evidence  satisfactory  to  Landlord  that  the net  worth of the
successor is and will be immediately  after such assignment  equal to or greater
than the net worth of Tenant as of the date of such notice.

     SECTION 10.17. OVERLOADING AND NUISANCE. Tenant shall not injure, overload,
deface or otherwise harm the Premises,  commit any nuisance, permit the emission
of any objectionable  noise,  vibration or odor, make, allow or suffer any waste
or make any use of the Premises which is improper,  offensive or contrary to any
law or ordinance or which will invalidate any of Landlord's insurance.

     SECTION  10.18.  SIGNS.  Tenant  shall not place or permit to be placed any
sign on the  Premises,  the  Building  or the Site  without  the  prior  written
approval of Landlord,  which approval shall include approval of the style,  size
and design of the sign, but shall not be unreasonably withheld.  Notwithstanding
the  foregoing,  Tenant  may only place  signs in the  locations  designated  on
Exhibit  A. All such  signs  shall  comply  with  any and all  applicable  laws,
regulations and  restrictions and shall be the sole cost and  responsibility  of
Tenant.  Landlord may require  their  removal at Tenant's  sole cost and expense
upon the expiration or earlier termination of this Lease. Tenant shall not place
or permit to be placed any other notices or advertisements on the Premises,  the
Building or the Site.

     SECTION 10.19. MAINTENANCE.  Except as otherwise provided in Sections 9 and
11, Tenant shall keep and maintain the Premises and all glass in windows in good
order,  repair  and  condition,  reasonable  wear and tear and damage by fire or
other insured casualty only excepted.

                                   SECTION 11

                               CASUALTY OR TAKING

     SECTION  11.1.  TERMINATION.  In the event that  greater  than  twenty-five
percent (25%) of the Premises shall be taken by any public  authority or for any
public use or destroyed by the action of any public  authority (a "Taking") then
this Lease may be  terminated  by either  Landlord  or Tenant  effective  on the
effective date of the Taking.  In the event that the Premises shall be destroyed
or damaged by fire or casualty (a  "Casualty"),  Tenant shall  immediately  give
notice  thereof  to  Landlord  and  within  thirty  (30) days of receipt of such
notice,  Landlord  shall  determine  whether  it will  require  in excess of one
hundred eighty (180) days from the date of the Casualty to restore the Premises.
If Landlord  determines  it will  require in excess of one hundred  eighty (180)
days from the date of the  casualty to restore the  Premises,  this Lease may be
terminated by



- -17-



either  Landlord or Tenant by notice to the other  within  forty-five  (45) days
after the  casualty.  In the case of a Taking such  election,  which may be made
notwithstanding the fact that Landlord's entire interest may have been divested,
shall be made by the giving of notice by Landlord or Tenant to the other within
thirty (30) days after  Landlord or Tenant,  as the case may be,  shall  receive
notice of the Taking.


     SECTION  11.2.  RESTORATION.  In the  event of a Taking or a  Casualty,  if
neither  Landlord nor Tenant  exercises  the  election to terminate  provided in
Section 11.1,  this Lease shall  continue in force and a just  proportion of the
Fixed Rent and other  charges  hereunder,  according to the nature and extent of
the damages  sustained by the Premises  shall be abated until the  Premises,  or
what may remain  thereof,  shall be put by Landlord in proper  condition for use
subject to zoning and building  laws or  ordinances  then in  existence,  which,
unless  Landlord or Tenant has  exercised  its option to  terminate  pursuant to
Section 11.1,  Landlord covenants to do with reasonable  diligence at Landlord's
expense.  Landlord's  obligations with respect to restoration  shall not require
Landlord to expend more than the net proceeds of insurance  recovered or damages
awarded  for such  Casualty  or Taking and made  available  for  restoration  by
Landlord's mortgagees.  "Net proceeds of insurance recovered or damages awarded"
refers to the gross  amount of such  insurance  or damages  less the  reasonable
expenses of Landlord in connection  with the  collection of the same,  including
without limitation, fees and expenses for legal and appraisal services.

     SECTION 11.3. AWARD.  Irrespective of the form in which recovery may be had
by law,  all rights to damages or  compensation  from a Taking  shall  belong to
Landlord in all cases.  Tenant hereby grants to Landlord all of Tenant's  rights
to  such  damages  and  compensation  and  covenants  to  deliver  such  further
assignments  thereof as Landlord may from time to time request and Tenant agrees
to reasonably  cooperate with Landlord in pursuing such claims.  Notwithstanding
the  foregoing,  Tenant  may  pursue any  claim(s)  to which it may be  entitled
against a taking authority for  reimbursement of relocation  expenses,  personal
property and trade fixtures.
                                                    


                                   SECTION 12

                                     DEFAULT

     SECTION 12.1. EVENTS OF DEFAULT. If any one or more of the following events
(individually, an "Event of Default") shall occur:
         
     (a)  if Tenant shall default in the  performance of any of its  obligations
          to pay the  Fixed  Rent,  Additional  Rent or any  other  sum  payable
          hereunder and if such default  shall  continue for ten (10) days after
          notice to Tenant;

     (b)  if Tenant  shall fail to observe or perform any other term,  covenant,
          condition  or  warranty  of this  Lease,  other than as  specified  in
          subsections  (c) through (g) below,  and such  failure is not cured by
          Tenant  within a period of thirty (30) days after receipt by Tenant of
          notice thereof from Landlord, unless such failure cannot with due
     


                                      -18-



               diligence be cured within a period of thirty (30) days,  in which
               case such failure  shall not be deemed to continue if Tenant
               proceeds promptly and with due diligence to cure the failure and
               diligently  completes the curing  thereof  within a period of one
               hundred twenty (120) days after such notice; or

          (c)  if any assignment  for the benefit of creditors  shall be made by
               Tenant;

          (d)  if Tenant's  leasehold  interest  shall be taken on  execution or
               other process of law in any action against Tenant;

          (e)  if a lien or  other  involuntary  encumbrance  is  filed  against
               Tenant's leasehold interest,  and is not discharged,  bonded off,
               or otherwise secured against to the sole satisfaction of Landlord
               within ninety (90) days thereafter; 

          (f)  if a  petition  is  filed  by  Tenant  seeking  appointment  of a
               receiver of Tenant (or of the whole or  substantially  all of its
               property),  or  for  liquidation,  or  for  reorganization  or an
               arrangement  or any  other  relief  under  any  provision  of the
               federal bankruptcy laws or any other applicable law or statute of
               the  United  States of  America  or any state  thereof as then in
               force and effect;  or 

          (g)  if an  involuntary  petition  seeking  the  relief  described  in
               Section 12.1

          (f)  is filed  against  Tenant and such  involuntary  petition  is not
               dismissed within ninety (90) days thereafter,

then, and in any of such cases, Landlord and the agents and servants of Landlord
lawfully  may, in  addition to and not in  derogation  of any  remedies  for any
preceding breach of covenant,  immediately or at any time thereafter and without
demand or notice and with or without  process of law  (forcibly,  if  necessary)
enter into and upon the  Premises or any part  thereof in the name of the whole,
or mail a notice of termination  addressed to Tenant,  and repossess the same as
of Landlord's former estate and expel Tenant and those claiming through or under
Tenant and remove its and their effect without being deemed guilty of any manner
of trespass and without  prejudice to any remedies which might otherwise be used
for arrears of rent or prior breach of covenant,  and upon such entry or mailing
as aforesaid  this Lease shall  terminate,  Tenant hereby  waiving all statutory
rights  (including,  without  limitation,  rights of redemption,  if any) to the
extent such rights may be lawfully waived.  Landlord,  without notice to Tenant,
may store Tenant's  effects,  and those of any person claiming  through or under
Tenant at the expense and risk of Tenant,  and, if Landlord so elects,  may sell
such effects at public auction or private sale and apply the net proceeds to the
payment  of all sums  due to  Landlord  from  Tenant,  if any,  and pay over the
balance, if any, to Tenant. 

     SECTION 12.2.  Remedies.  In the event that this Lease is terminated  under
any of the provisions  contained in Section 12.1,  Tenant shall pay forthwith to
Landlord, as compensation, the excess of the total rent reserved for the residue
of the Term over the fair market rental value of the Premises for the residue of
the term,  such excess to be  discounted  to present  value at the then  current
Federal Reserve Bank discount rate. In calculating the rent reserved there shall
be included, in addition to the Fixed Rent and Additional Rent, the value of all
other  considerations  agreed  to be paid or  performed  by  Tenant  during  the
residue.  As additional and cumulative  obligations  after any such termination,
Tenant shall also pay punctually to Landlord all the



                                      -19-




sums and shall perform all the obligations  which Tenant covenants in this Lease
to pay and to perform in the same  manner and to the same extent and at the same
time as if this Lease had not been terminated.  In calculating the amounts to be
paid by Tenant pursuant to the preceding sentence, Tenant shall be credited with
any amount paid to Landlord  pursuant to the first sentence of this Section 12.2
and also with the net proceeds of any rent obtained by Landlord by reletting the
Premises,  after deducting all Landlord's reasonable expenses in connection with
such reletting, including, without limitation, all repossession costs, brokerage
commissions,  fees for legal services and expenses of preparing the Premises for
such  reletting,  it being  agreed by  Tenant  that  Landlord  may (i) relet the
Premises  or any  part  or  parts  thereof  for a term  or  terms  which  may at
Landlord's  option be equal to or less than or exceed  the  period  which  would
otherwise  have  constituted  the  balance of the term hereof and may grant such
concessions  and free rent as  Landlord  in its  reasonable  judgment  considers
advisable or necessary to relet the same and (ii) make such alterations, repairs
and decorations in the Premises as Landlord in its reasonable judgment considers
advisable  or  necessary  to relet  the  same,  and no  action  of  Landlord  in
accordance  with the  foregoing  or failure  to relet or to  collect  rent under
reletting shall operate or be construed to release or reduce Tenant's  liability
as aforesaid.  

     SECTION 12.3. REMEDIES  CUMULATIVE.  Except as otherwise expressly provided
herein, any and all rights and remedies which Landlord may have under this Lease
and at law and equity shall be cumulative  and shall not be deemed  inconsistent
with each  other,  and any two or more of all such  rights and  remedies  may be
exercised at the same time to the greatest extent permitted by law.

     SECTION 12.4.  LANDLORD'S RIGHT TO CURE DEFAULTS. At any time following ten
(10) days' prior notice to Tenant  (except in cases of emergency  when no notice
shall be  required),  Landlord  may (but  shall  not be  obligated  to) cure any
default by Tenant under this Lease, and whenever  Landlord so elects,  all costs
and expenses  incurred by Landlord,  including  reasonable  attorneys'  fees, in
curing a default  shall be paid by  Tenant to  Landlord  as  Additional  Rent on
demand, together with interest thereon at the rate provided in Section 12.7 from
the date of payment by Landlord to the date of payment by Tenant.

     SECTION  12.5.  EFFECT OF WAIVERS OF DEFAULT.  Any consent or permission by
Landlord  to any act or  omission  which  otherwise  would  be a  breach  of any
covenant  or  condition  herein,  or any waiver by Landlord of the breach of any
covenant or condition herein,  shall not in any way be held or construed (unless
expressly so declared) to operate so as to impair the  continuing  obligation of
any covenant or  condition  herein,  or otherwise  operate to permit the same or
similar acts or omissions  except as to the  specific  instance.  The failure of
Landlord  to seek  redress  for  violation  of,  or to  insist  upon the  strict
performance  of, any  covenant or  condition of this Lease shall not be deemed a
waiver of such  violation  nor  prevent  a  subsequent  act,  which  would  have
originally  constituted a violation,  from having all the force and effect of an
original violation. The receipt by Landlord of rent with knowledge of the breach
of any  covenant of this Lease shall not be deemed to have been a waiver of such
breach  by  Landlord  or of any  of  Landlord's  remedies  on  account  thereof,
including its right of termination for such default.

     SECTION  12.6. NO ACCORD AND  SATISFACTION.  No acceptance by Landlord of a
lesser sum than the Fixed  Rent,  Additional  Rent or any other  charge then due




                                      -20-



shall be deemed to be other than on account of the earliest  installment of such
rent or charge due,  unless  Landlord  elects by notice to Tenant to credit such
sum against the most recent  installment due. An endorsement or statement on any
check or any letter  accompanying  any check or payment as rent or other  charge
shall not be deemed an accord and  satisfaction,  and  Landlord  may accept such
check or payment without prejudice to Landlord's right to recover the balance of
such installment or pursue any other remedy under this Lease or otherwise.

     SECTION 12.7.  INTEREST ON OVERDUE SUMS. If Tenant fails to pay Fixed Rent,
Additional  Rent or any other sum  payable by Tenant to Landlord by the due date
thereof (i.e., the due date disregarding any requirement of notice from Landlord
or any period of grace  allowed  to  Tenant),  the  amount so unpaid  shall bear
interest,  at a variable  rate per annum (the  "Delinquency  Rate") equal to the
greater of (i) four  percent (4%) in excess of the base rate (prime rate) of The
First  National  Bank of Boston  from time to time in effect or (ii) the maximum
interest rate permissible under applicable law, commencing with the due date and
continuing  through the day on which  payment of such  delinquent  payment  with
interest thereon is paid.

                                   SECTION 13

                                   MORTGAGES

     SECTION 13.1. RIGHTS OF MORTGAGE HOLDERS. No Fixed Rent, Additional Rent or
any other  charge  shall be paid  more than ten (10) days  prior to the due date
thereof and payments  made in violation of this  provision  shall (except to the
extent that such payments are actually  received by a mortgagee in possession or
in the  process of  foreclosing  its  mortgage)  be a nullity  as  against  such
mortgagee  and Tenant  shall be liable for the amount of such  payments  to such
mortgagee.

     In the event of any act or omission by Landlord which would give Tenant the
right to terminate  this Lease or to claim a partial or total  eviction,  Tenant
shall not exercise any such right (a) until it shall have given  notice,  in the
manner  provided in Section  14.1,  of such act or omission to any Lender  whose
name and address  shall have been  furnished  to Tenant in writing,  at the last
address so  furnished,  and (b) until a reasonable  period of time for remedying
such act or omission  shall have  elapsed  following  the giving of such notice,
provided  that  following  the giving of such  notice,  Landlord  or such Lender
shall, with reasonable diligence have commenced and continued to remedy such act
or omission or to cause the same to be rendered.

     In the event any  proceedings are brought for the foreclosure of, or in the
event of exercise  of the power of sale under,  any  mortgage  now or  hereafter
encumbering  the  Premises,  Tenant  shall  attorn  to the  purchaser  upon such
foreclosure  or sale or upon  any  grant  of a deed in lieu of  foreclosure  and
recognize such purchaser as Landlord under this Lease.

     SECTION 13.2. SUPERIORITY OF LEASE; OPTION TO SUBORDINATE.  Unless Landlord
exercises the option set forth below in this Section  13.2,  this Lease shall be
superior  to and shall  not be  subordinate  to any  mortgage  on the  Premises.
Landlord shall have the option to subordinate  this Lease to any mortgage of the
Premises  provided  that the holder of record  thereof  enters into an agreement
with Tenant, in such holder's  customary form, by the terms of which such holder
will agree to (a) recognize  the rights of Tenant under this Lease,  (b) perform
Landlord's obligations hereunder arising after the date of such



                                      -21-



holder's  acquisition  of title and (c) accept  Tenant as tenant of the Premises
under the terms and  conditions  of this  Lease in the event of  acquisition  of
title by such holder  through  foreclosure  proceedings  or otherwise and Tenant
will agree to recognize  the holder of such  mortgage as Landlord in such event,
which  agreement shall be made expressly to bind and inure to the benefit of the
successors  and assigns of Tenant and of the holder and upon  anyone  purchasing
the Premises at any foreclosure  sale.  Tenant agrees to execute and deliver any
appropriate  instruments necessary to carry out the agreements contained in this
Section 13.2. 


                                   SECTION 14

                            MISCELLANEOUS PROVISIONS

     SECTION 14.1. NOTICES FROM ONE PARTY TO THE OTHER. For the purposes of this
Lease, all notices,  demands,  requests, or refusal to accept delivery which may
be or are required to be given under this Lease shall be in writing and shall be
given by personal  delivery,  or by certified  mail,  return receipt  requested,
postage  prepaid,  or  by  Federal  Express  or  similar  nationally  recognized
overnight courier,  charges prepaid, and addressed to Landlord at Communications
& Power  Industries,  Inc.,  Attention:  Facilities  Manager,  150 Sohier  Road,
Beverly,  Massachusetts  01915, and addressed to Tenant at Converter Power Inc.,
Attention:  Wendy Ventura,  148 Sohier Road, Beverly,  Massachusetts  01915. The
addresses of the parties may be changed from time to time by notice given in the
manner set forth in this Section 14.1. Each notice,  request,  demand, advice or
designation  given under this Lease shall be deemed  properly  given upon actual
receipt by the party to whom the same is  addressed.  Any notice shall be deemed
duly given when delivered or tendered for delivery at such address.

     SECTION 14.2.  QUIET  ENJOYMENT.  Landlord agrees that upon Tenant's paying
the Fixed Rent,  Additional Rent and all other sums due hereunder and performing
and observing the terms, covenants,  conditions and provisions on its part to be
performed  and observed,  Tenant shall and may peaceably and quietly have,  hold
and enjoy the  Premises  during  the term  without  any manner of  hindrance  or
molestation from Landlord or anyone claiming under Landlord,  subject,  however,
to the terms of this Lease.

     SECTION 14.3. LEASE NOT TO BE RECORDED; NOTICE OF LEASE. Tenant agrees that
it will not record this  Lease.  If the Term of this  Lease,  including  options
and/or extensions,  exceeds seven years,  Landlord and Tenant agree that, on the
request  of  either,  they  will  enter  and  record a  notice  of lease in form
reasonably acceptable to Landlord.

     SECTION  14.4..  BIND AND INURE;  LIMITATION OF LANDLORD'S  LIABILITY.  The
obligations  of this  Lease  shall run with the land,  and this  Lease  shall be
binding upon and inure to the benefit of the parties hereto and their respective
successors  and  assigns.  No owner of the  Premises  shall be liable under this
Lease except for breaches of Landlord's  obligations  occurring while such party
is the owner of the Premises.  The obligations of Landlord shall be binding upon
the assets of Landlord  which comprise the Building but not upon other assets of
Landlord.  No  individual  partner,  trustee,  stockholder,  officer,  director,
employee or beneficiary of Landlord shall be personally  liable under this Lease
and Tenant shall look solely to Landlord's interest in the Premises in pursuit



                                      -22-



of its remedies upon an event of default  hereunder,  and the general  assets of
Landlord  and its  partners,  trustees,  stockholders,  officers,  employees  or
beneficiaries  of  Landlord  shall not be  subject to levy,  execution  or other
enforcement  procedure for the satisfaction of the remedies of Tenant.  Landlord
shall not have any  liability  to Tenant  for any  incidental  or  consequential
damages  arising out of or related to the  services  provided  under this Lease,
including,  but not limited to, the loss of use,  revenue or profit arising from
any delay or failure of Landlord's  performance  hereunder or for any defects or
problems  related  thereto.  Landlord's  sole  liability  shall be to  refund an
equitable  portion of the Fixed Rent paid by Tenant for such service or services
which are the subject of claim or dispute.  

     SECTION 14.5.  ACTS OF GOD.  Excepting only the obligation of Tenant to pay
any  monetary  amount due  hereunder,  in any case where  either party hereto is
required to do any act,  delays  caused by or resulting  from acts of God,  war,
civil commotion, fire, flood or other casualty, labor difficulties, shortages of
labor, materials or equipment, government regulations, unusually severe weather,
or other causes beyond such party's  reasonable  control  (other than  financial
inability)  shall not be counted in determining the time during which work shall
be completed, whether such time be designated by a fixed date, a fixed time or a
"reasonable time", and such time shall be deemed to be extended by the period of
such delay.

     SECTION 14.6.  LANDLORD'S  DEFAULT.  Landlord  shall not be deemed to be in
default in the performance of any of its obligations  hereunder  unless it shall
fail to perform such obligations and unless within thirty (30) days after notice
from Tenant to Landlord  specifying  such  default  Landlord  has not  commenced
diligently to correct the default so specified or has not thereafter  diligently
pursued such  correction  to  completion.  Tenant  shall have no right,  for any
default by Landlord, to offset or counterclaim against any rent due hereunder.

     SECTION 14.7. BROKERAGE.  Landlord is responsible for paying one commission
to "Broker",  and Landlord  agrees to pay such  commission.  Tenant warrants and
represents  to Landlord  that it has had no dealings with any broker or agent in
connection with this Lease except "Broker", and covenants to defend with counsel
approved by Landlord,  hold harmless and indemnify Landlord from and against any
and all cost, expense or liability for any compensation, commissions and charges
claimed by any broker or agent with whom it has dealt and the costs  incurred by
Landlord in connection with the enforcement of this  indemnification  agreement.
Landlord  warrants and represents to Tenant that it has had no dealings with any
broker or agent in connection with this Lease except "Broker",  and covenants to
defend with counsel approved by Tenant,  hold harmless and indemnify Tenant from
and  against  any and all  cost,  expense  or  liability  for any  compensation,
commissions  and  charges  claimed by any broker or agent with whom it has dealt
and the costs  incurred by Tenant in  connection  with the  enforcement  of this
indemnification agreement. The aforesaid indemnification agreement shall survive
the expiration or earlier termination of this Lease.

     SECTION 14.8. MISCELLANEOUS.  This Lease shall be governed by and construed
in accordance  with the laws of the  Commonwealth of  Massachusetts.  This Lease
constitutes the entire agreement between the parties with respect to the subject
matter  hereof  and  supersede   all  prior  and   contemporaneous   agreements,
representations,  warranties,  and  understandings  of the parties,  written and
oral,  which pertain to said subject  matter.  No  supplement,  modification  or
amendment  of this  Lease  shall  be  binding  unless  executed  in  writing  by
authorized representatives of the parties hereto.


                                      -23-



     SECTION 14.9. CORPORATE AUTHORITY.  Each individual executing this Lease on
behalf  of  its  respective   corporation  represents  and  warrants  that  such
corporation is validly  formed,  duly  authorized and existing,  qualified to do
business in the state of  Massachusetts,  has the full right and legal authority
to enter into this Lease, and that such individual is duly authorized to execute
and deliver this Lease in  accordance  with such  corporation's  bylaws and/or a
Board of Directors  resolution,  and that this Lease is binding upon the parties
in accordance with all the terms and conditions therein.

     SECTION 14.10. HEADINGS,  EXHIBITS. The subject headings of the Sections of
this Lease are included for purposes of convenience of reference only, and shall
not effect the  construction  or  interpretation  of this  Lease.  All  Exhibits
referred to herein are a part of this Lease.

     SECTION 14.11.  SEVERABILITY.  If any one or more of the  provisions,  or a
portion of any such  provision,  of this Lease shall be deemed to be contrary to
law, invalid, illegal or unenforceable in any respect by any governmental agency
or court of law having  competent  jurisdiction  over the subject matter and the
parties hereto,  the remaining  provisions shall be severable and enforceable in
accordance with their terms. It is the express intent of the parties that in the
event that any term,  provision  or portion of this Lease is deemed  contrary to
law,  invalid,  illegal  or  unenforceable,  the  parties  shall  make  whatever
reasonable  adjustments in their  arrangements,  if any are required,  as may be
mutually fair in light of their original intent as reflected in this Lease.

     SECTION  14.12.  TIME OF  ESSENCE.  Time is of the essence in regard to all
obligations  provided for in the Lease.  Section  14.13.  Grants and  Easements.
During the Term,  Landlord  reserves to itself the right,  from time to time, to
grant  any  easements,   rights,  restrictions  and  dedications  (collectively,
Grants),  as it may deem necessary or as may be required by law and to cause the
recording of any instruments  evidencing such Grants,  provided that such Grants
do not  unreasonably  interfere  with the use of the Premises by Tenant.  Tenant
agrees  to  fully  cooperate  in  relocating  any  such  Grants  which  will not
unreasonably interfere with Tenant's use of the Premises.  Tenant shall sign any
agreements  with  respect  to such  Grants  as may be  reasonably  requested  by
Landlord and  Tenant's  failure to do so shall  constitute a material  breach of
this Lease.

     SECTION 14.14.  COUNTERPARTS.  This Lease may be executed in  counterparts,
each of which shall be valid and  binding  original,  but all of which  together
shall  constitute  one  and  the  same   instrument.   The  signature  page  and
acknowledgment  of any counterpart may be removed  therefrom and attached to any
other  counterpart  to evidence  execution  thereof by all of the parties hereto
without affecting the validity thereof.



                                      -24-




WITNESS  the  execution  hereof  under seal as of the day and year  first  above
written.

                                      Tenant:
                                      CONVERTER POWER INC., a
                                      Massachusetts corporation

                                      By ---------------------------------
                                      Name:
                                      Title:

                                      Landlord:
                                      COMMUNICATIONS & POWER
                                      INDUSTRIES, INC., a Delaware
                                      corporation

                                      By: --------------------------------
                                      Name:
                                      Title:




















                                      -25-