STANDARD FORM COMMERCIAL LEASE - RMD-I
                                    V6

1.   PARTIES    Charles  River Realty, dba Bachrach, Inc., 44 Hunt  Street,
  (fill in)     Watertown,  Massachusetts 02472, LESSOR,  which  expression
                shall include its heirs, successors, and assigns where  the
                context  so  admits, does hereby lease to RMD  Instruments,
                Corp.,  44  Hunt  Street,  Watertown,  Massachusetts  02472
                LESSEE,  which  expression shall  include  its  successors,
                executors,  administrators, and assigns where  the  context
                so  admits,  and  the  LESSEE hereby leases  the  following
                described premises:
2.  PREMISES
(fill in
and include,
if applicable,
suite number,
floor number,
and square feet)
                Approximately  7,700 square feet of space as  now  occupied
                by  Lessee  on  the five floors located at 44 Hunt  Street,
                Watertown, Massachusetts 02472.  Premises include  the  use
                of  20% of all parking spaces but two (2) parking spaces in
                the  front  presently  marked Ms. Redler  and  Dr.  Entine,
                together  with  the  right to use in  common,  with  others
                entitled  thereto, the hallways, stairways, and  elevators,
                necessary   for   access  to  said  leased  premises,   and
                lavatories nearest thereto.


3.             TERM
               (fill in)
                The term of this lease shall be for five (5) years
                commencing on July 1, 2008 and ending on June 30, 2013.

4.             BASE RENT
               (fill in)
                The LESSEE shall pay to the LESSOR rent at the base rate
                of  $153,230 ($19.90/sq. ft.), payable in advance in
                monthly installments of  $12,769. and increasing by 4%
                starting with the beginning of each new lease year after
                the initial one.

5.             SECURITY
               DEPOSIT
               (fill in)
                The LESSOR and LESSEE agree that a deposit in the amount
                of  $13,000.00 dollars paid by the LESSEE to the LESSOR as
                below, shall be held as a security for the LESSEE's
                performance as herein provided and refunded to the LESSEE
                within thirty days (30) at the end of this lease subject
                to the LESSEE's satisfactory compliance with the
                conditions hereof.  The deposit will be paid in two equal
                installments of $6,500 each, payable on January 1st, 2009
                and July 1st, 2009.

6.             RENT
               ADJUSTMENT
               (fill in)

                The  LESSEE  shall pay to the LESSOR as additional  rent  a
                pro-rata share (19.2%) of any increase or decrease  in  the
                building's  real  estate taxes, the  building's  water  and
                sewer  use charges and the building's costs of heating  oil
                over  the charges and costs of each of these items for  the
                base  Calendar year 2007.  Thus, for the lease year running
                from  July 1, 2008 to June 30, 2009, the amount to be added
                as  an  adjustment to the first year's base rent  would  be
                19.2%  of  the  difference in the cost  of  these  building
                expenses for Calendar 2008 and Calendar 2007.

                For  the purposes of this agreement, for the Calendar  year
                2007,  real  estate taxes for the building were $35,839.00;
                water  and sewer use charges were $2,569.00; and  the  cost
                of  heating oil was $36,412.00.  LESSEE shall make  payment
                by  the  latter  of the end of the month of  April  of  the
                lease  year  or thirty days after the LESSOR  has  provided
                the  LESSEE  written  notice  accompanied  by  a  statement
                showing  the  determination of the amount due from  LESSEE.
                This   increase  shall  be  prorated  should   this   lease
                terminate before the end of any lease year.

7.              UTILITIES
(fill in or
delete)
                LESSEE's  water and sewer use charges, and steam heat,  but
                The  LESSOR  shall provide and shall pay  for  all  of  the
                not  electricity, gas or telephone;  Where  practical,  the
                and services    Lessee  shall be metered for electricity
                and  gas  and  pay
                that  directly  to the utility companies.   Where  separate
                metering  is not practical, the Lessee will pay the  Lessor
                19.2%  of  the cost of such utilities in response to  semi-
                annual  bills  provided  to  it,  covering  the  six  month
                periods ending June 30th and December 31st.

                LESSOR  agrees  to furnish reasonable heat  to  the  leased
                premises,   the   hallways,   stairways.   elevators,   and
                lavatories  on regular business days of the heating  season
                of  each  year, to furnish elevator service  and  to  light
                passageways  and  stairways, and to furnish  such  cleaning
                service  for  the common areas as is customary  in  similar
                buildings   in   said  city  or  town,   all   subject   to
                interruption  due  to  any  accident,  to  the  making   of
                repairs,    alterations   or   improvements,    to    labor
                difficulties,  to  trouble in obtaining fuel,  electricity,
                service  or supplies from the sources from which  they  are
                usually obtained for said building, or to any cause  beyond
                the LESSOR's control.



8.             USE OF LEASED
               PREMISES
                The  LESSEE  shall  use the leased premises  only  for  the
                purpose  of  research  and  manufacturing  of  instruments,
                components  and other technologically based activities  and
                associated  work  without written consent of  Lessor  which
                shall not be unreasonably withheld.

9.             COMPLIANCE
               WITH LAWS
                The  LESSEE acknowledges that no trade or occupation  shall
                be  conducted  in the leased premises or use  made  thereof
                which  will  be unlawful, improper, noisy or offensive,  or
                contrary  to  any law or any municipal by-law or  ordinance
                in  force  in  the city or town in which the  premises  are
                situated.

10.            FIRE
               INSURANCE
                The  LESSEE shall not permit any use of the leased premises
                which  will make voidable any insurance on the property  of
                which  the  leased premises are a part, or on the  contents
                of  said property or which shall be contrary to any law  or
                regulation  from  time  to  time  established  by  the  New
                England  Fire Insurance Rating Association, or any  similar
                body  succeeding to its powers.  The LESSEE shall on demand
                reimburse  the  LESSOR, and all other  tenants,  all  extra
                insurance  premiums  caused by  the  LESSEE's  use  of  the
                premises.

11.            MAINTENANCE
               OF PREMISES
                The  LESSEE agrees to maintain the leased premises  in  the
                same  condition as they are at the commencement of the term
                or  as  they  may be put in during the term of this  lease,
                reasonable  wear  and  tear,  damage  by  fire  and   other
                casualty only excepted, and whenever necessary, to  replace
                plate  glass  and  other glass therein; acknowledging  that
                the  leased  premises are now in good order and  the  glass
                whole.  The LESSEE shall not permit the leased premises  to
                be  overloaded, damaged, stripped, or defaced,  nor  suffer
                any  waste other than ordinary wear and tear.  LESSEE shall
                obtain  written consent of LESSOR before erecting any  sign
                on the premises.

                Maintenance  of  the building exterior including  the  roof
                and  parking lot as well as the heating system and building
                structure  are  included in the base  rent  in  Section  4.
                Maintenance  costs  for  the  building  interior   is   not
                included  in the base rent and the Lessor shall  pay  19.2%
                of the cost of such maintenance.

12.            ALTERATIONS-
               ADDITIONS
                The  LESSEE  shall  not  make  structural  alterations   or
                additions  to  the  leased  premises,  but  may  make  non-
                structural   alterations  provided  the   LESSOR   consents
                thereto   in   writing,   which  consent   shall   not   be
                unreasonably   withheld  or  delayed.   All  such   allowed
                alterations  shall be at LESSEE's expense and shall  be  in
                quality   at  least  equal  to  the  present  construction.
                LESSEE  shall not permit any mechanics' liens,  or  similar
                liens,  to  remain upon the leased premises for  labor  and
                material  furnished  to  LESSEE or  claimed  to  have  been
                furnished  to  LESSEE  in  connection  with  work  of   any
                character  performed or claimed to have been  performed  at
                the  direction of LESSEE and shall cause any such  lien  to
                be  released  of record forthwith without cost  to  LESSOR.
                Any  alterations or improvements made by the  LESSEE  shall
                become  the  property of the LESSOR at the  termination  of
                occupancy   as  provided  herein,  except  for  any   trade
                fixtures  installed  by  LESSEE  which  shall  remain   the
                LESSEE's property.

13.            ASSIGNMENT-
               SUBLEASING
                The  LESSEE  shall not assign or sublet the  whole  or  any
                part  of the leased premises without LESSOR's prior written
                consent,  which consent shall not be unreasonably  withheld
                or  delayed.   Notwithstanding such consent,  LESSEE  shall
                remain  liable to LESSOR for the payment of  all  rent  and
                for  the  full performance of the covenants and  conditions
                of this lease.

14.            SUBORDINATION
                This lease shall be subject and subordinate to any and  all
                mortgages,  deeds  of trust and other  instruments  in  the
                nature of a mortgage, now or at any time hereafter, a  lien
                or  liens on the property of which the leased premises  are
                a  part  and  the  LESSEE shall, when  requested,  promptly
                execute  and deliver such written instruments as  shall  be
                necessary to show the subordination of this lease  to  said
                mortgages, deeds of trust or other such instruments in  the
                nature of a mortgage.

15.            LESSOR'S
               ACCESS
                The  LESSOR  or  agents of the LESSOR  may,  at  reasonable
                times,  enter  to view the leased premises and  may  remove
                placards  and  signs  not approved and  affixed  as  herein
                provided,  and  make  repairs  and  alterations  as  LESSOR
                should  elect  to  do and may show the leased  premises  to
                others, and at any time within three (3) months before  the
                expiration of the term, may affix to any suitable  part  of
                the  leased  premises a notice for letting or  selling  the
                leased  premises  or property of which the leased  premises
                are  a  part and keep the same so affixed without hindrance
                or molestation.


16.             INDEMNIFI-
               CATION AND
               LIABILITY
               (fill in)
                 The  LESSEE shall save the LESSOR harmless from  all  loss
                 and damage occasioned by the use or escape of water or  by
                 the bursting of pipes, as well as from any claim or damage
                 resulting from neglect in not removing snow and  ice  from
                 the  roof  of the building or from the sidewalks bordering
                 upon  the  premise so leased, or by any nuisance  made  or
                 suffered  on  the  leased premises, unless  such  loss  is
                 caused by the neglect of the LESSOR.  The removal of  snow
                 and  ice  from  the sidewalks bordering  upon  the  leased
                 premises shall be LESSORS responsibility.

17.            LESSEE'S
               LIABILITY
               INSURANCE
               (fill in)
                 The  LESSEE  shall  maintain with respect  to  the  leased
                 premises  and the property including the real  estate,  of
                 which the leased premises are a part, comprehensive public
                 liability  insurance  in the amount of $500,000/$1,000,000
                 with  property damage insurance in limits of  $100,000  in
                 responsible   companies  qualified  to  do   business   in
                 Massachusetts  and in good standing therein  insuring  the
                 LESSOR  as  well as LESSEE against injury  to  persons  or
                 damage  to property as provided.  The LESSEE shall deposit
                 with  the  LESSOR  certificates for such insurance  at  or
                 prior  to  the  commencement of the term,  and  thereafter
                 within  thirty  (30) days prior to the expiration  of  any
                 such  policies.   All  such insurance  certificates  shall
                 provide  that such policies shall not be canceled  without
                 at  least  ten  (10)  days prior written  notice  to  each
                 assured named therein.

18.            FIRE,
               CASUALTY-
               EMINENT
               DOMAIN
                 Should a substantial portion of the leased premises, or of
                 the  property  of which they are a part, be  substantially
                 damaged  by fire or other casualty, or be taken by eminent
                 domain,  the  LESSOR  may elect to terminate  this  lease.
                 When  such  fire, casualty, or taking renders  the  leased
                 premises substantially unsuitable for their intended  use,
                 a  just and proportionate abatement of rent shall be made,
                 and the LESSEE may elect to terminate this lease if:

                 (a)The LESSOR fails to give written notice within thirty
                    (30) days of intention to restore leased premises, or
                 (b)The LESSOR fails to restore the leased premises to a
                    condition substantially suitable for their intended use
                    within ninety (90) days of said fire, casualty, or
                    taking.

                 The  LESSOR reserves, and the LESSEE grants to the LESSOR,
                 all rights which the LESSEE may have for damages or injury
                 to  the  leased premises for any taking by eminent domain,
                 except  for damage to the LESSEE's fixtures, property,  or
                 equipment.

19.            DEFAULT          In the event that:
               AND
               BANKRUPTCY

                 (a)The   LESSEE  shall  default  in  the  payment  of  any
                    installment  of rent or other sum herein specified  and
                    such  default  shall continue for ten (10)  days  after
                    written notice thereof; or
                 (b)The   LESSEE   shall  default  in  the  observance   or
                    performance  of  any  other of the LESSEE's  covenants,
                    agreements,  or obligations hereunder and such  default
                    shall  not  be corrected within thirty (30) days  after
                    written notice thereof; or
                 (c)The  LESSEE  shall  be declared bankrupt  or  insolvent
                    according to law, or, if any assignment shall  be  made
                    of LESSEE's property for the benefit of creditors,

                 then  the  LESSOR  shall have the right thereafter,  while
                 such  default  continues, to re-enter  and  take  complete
                 possession of the leased premises, to declare the term  of
                 this lease ended, and remove the LESSEE's effects, without
                 prejudice  to  any remedies which might be otherwise  used
                 for  arrears  of rent or other default.  The LESSEE  shall
                 indemnify  the LESSOR against all loss of rent  and  other
                 payments  which  the LESSOR may incur by  reason  of  such
                 termination during the residue of the term.

                 If  the  LESSEE  shall  default, after  reasonable  notice
                 thereof,   in  the  observance  or  performance   of   any
                 conditions or covenants on LESSEE's part to be observed or
                 performed  under or by virtue of any of the provisions  in
                 any article of this lease, the LESSOR, without being under
                 any  obligation to do so and without thereby waiving  such
                 default,  may remedy such default for the account  and  at
                 the  expense  of  the  LESSEE.  If the  LESSOR  makes  any
                 expenditures or incurs any obligations for the payment  of
                 money  in connection therewith, including but not  limited
                 to, reasonable attorney's fees in instituting, prosecuting
                 or  defending any action or proceeding, such sums paid  or
                 obligations insured, with interest at the rate of six  (6)
                 per  cent per annum and costs, shall be paid to the LESSOR
                 by the LESSEE as additional rent.

20.            NOTICE
               (fill in)
                 Any  notice from the LESSOR to the LESSEE relating to  the
                 leased  premises  or to the occupancy  thereof,  shall  be
                 deemed duly served, if left at the leased premises with  a
                 suitable representative of the Lessee and addressed to the
                 LESSEE,  or, if mailed to the leased premises,  registered
                 or  certified  mail,  return  receipt  requested,  postage
                 prepaid,  addressed to the LESSEE.  Any  notice  from  the
                 LESSEE to the LESSOR relating to the leased premises or to
                 the  occupancy  thereof, shall be deemed duly  served,  if
                 mailed  to  the  LESSOR by registered or  certified  mail,
                 return  receipt requested, postage prepaid,  addressed  to
                 the LESSOR at such address as the LESSOR may from time  to
                 time  advise  in writing.  All rent and notices  shall  be
                 paid  and sent to the LESSOR at 44 Hunt Street, Watertown,
                 Massachusetts 02472.

21.            SURRENDER
                 The LESSEE shall at the expiration or other termination of
                 this lease remove all LESSEE's goods and effects from  the
                 leased  premises, (including, without hereby limiting  the
                 generality  of  the  foregoing, all  signs  and  lettering
                 affixed or painted by the LESSEE, either inside or outside
                 the  leased premises). LESSEE shall deliver to the  LESSOR
                 the leased premises and all keys, locks thereto, and other
                 fixtures  connected  therewith  and  all  alterations  and
                 additions made to or upon the leased premises, in the same
                 condition as they were at the commencement of the term, or
                 as  they  were  put in during the term hereof,  reasonable
                 wear  and  tear and damage by fire or other casualty  only
                 excepted.  In the event of the LESSEE's failure to  remove
                 any  of  LESSEE's  property from the premises,  LESSOR  is
                 hereby authorized, without liability to LESSEE for loss or
                 damage  thereto, and at the sole risk of LESSEE, to remove
                 and  store any of the property at LESSEE's expense, or  to
                 retain same under LESSOR's control or to sell at public or
                 private  sale, any or all of the property not  so  removed
                 and  to apply the net proceeds of such sale to the payment
                 of any sum due hereunder, or to destroy such property.

                 It is also understood and agreed that at the expiration or
                 other termination of this lease, LESSOR at his option, may
                 take   title   to  any  and  all  leasehold  improvements,
                 including,  but  not  limited  to,  chemical  hoods,  HVAC
                 systems,  built-in  or  attached work  benches,  telephone
                 systems,  backup  generators and  electrical  distribution
                 equipment,  air circulation systems, etc.   However,  this
                 does  not include those pieces of equipment which are part
                 of  working  systems used by the LESSEE  as  part  of  his
                 manufacturing or research activities such as refrigeration
                 units providing cooling to evaporators and x-ray equipment
                 or  other  technological items, such as local transformers
                 which  prepare power for use by special equipment.   Those
                 leasehold items to which the LESSOR does not opt  to  take
                 title shall be removed by the LESSEE at its expense.

22.            HAZARDOUS
               WASTE
               PROVISION
                 It is also understood and agreed that at the expiration or
                 other  termination of this lease, the LESSEE shall  remove
                 all  hazardous waste associated with its occupancy to  the
                 satisfaction  of  an independent environmental  consulting
                 firm such as IES, Inc of Somerville, MA, the firm that did
                 an  ASTM  Screen/Limited Assessment of the entire property
                 in  May  2008, or a similar qualified inspection  service.
                 Any  expense incurred to engage an environmental  casualty
                 firm  to  make  this determination shall be  the  LESSOR's
                 responsibility.  However, if the firm determines that  the
                 Lessee has failed to meet this obligation, the cost of re-
                 inspections will be that of the LESSEE.

23.            PROPERTY &
               LIABILITY
               INSURANCE
               PROVISION

                 LESSEE  will  coordinate  the  purchase  of  property  and
                 liability  insurance with the LESSOR to  maintain  a  high
                 quality of coverage and pay for 19.2% of the cost as  part
                 of  the miscellaneous expenses described below.  The  cost
                 of  insurance is not included in the base rent in  Section
                 4.    This  clause  shall  dominate  Clause  17  "Lessee's
                 Liability* Insurance" above.

24.            OPTION TO
               EXTEND
               LEASE
                 LESSEE  and  LESSOR agree to negotiate in  good  faith  an
                 extension  of  this Lease at the end of the  term.  LESSOR
                 hereby grants to LESSEE the right of first refusal to  re-
                 let  the  Premises  at  the end of the  term.   If  LESSOR
                 receives  an acceptable offer from a bona fide prospective
                 tenant  to  lease  the Premises at the end  of  the  term,
                 LESSOR  shall give notice of the same to LESSEE and LESSEE
                 shall  have  fifteen  (15)  calendar  days  from  LESSEE's
                 receipt of said written notice to exercise LESSEE's  right
                 of  first refusal and match the terms proposed by the bona
                 fide  prospective tenant except with a 2.5%  surcharge  on
                 the cash rent.

25.            RIGHT OF
               FIRST
               REFUSAL
                 LESSOR hereby grants to LESSEE a right of first refusal to
                 purchase  44  Hunt Street, Watertown, Massachusetts  02472
                 (the  "Property"), exercisable during  the  term  of  this
                 Lease,  but  subordinated to any right  of  first  refusal
                 given  to  Radiation Monitoring Devices, Inc.   If  LESSOR
                 receives a bona fide offer to purchase from a third party,
                 LESSOR  shall  provide LESSEE with written notice  thereof
                 together  with  a  true  and correct  copy  of  the  buyer
                 executed offer to purchase. LESSEE shall have a period  of
                 fifteen days following receipt of such notice in which  to
                 elect  to  purchase  the Property on the  same  terms  and
                 conditions  whereupon LESSEE shall enter into  a  purchase
                 contract  with LESSOR on such terms.  If LESSEE  does  not
                 elect  to  purchase as aforesaid and the  underlying  sale
                 does  not  occur, or if the terms change  from  the  terms
                 presented to LESSEE, this right of first refusal provision
                 shall remain in effect.

26.            MISCELLANEOUS
               EXPENSES
               PROVISION
                 It is also understood and agreed that the LESSEE will
                 reimburse the LESSOR for 19.2% of the other expenses paid
                 for by the LESSOR as illustrated in the Attachments I
                 appended to this document.  It is included for
                 illustrative purposes only and does not take precedence
                 over the written provisions of this lease.  The payment
                 will be made in response to quarterly or semi-annual bills
                 provided to the LESSEE covering the appropriate periods
                 ending either June 30th and December 31st, or March 31st,
                 June 30th, September 30th and December 31st as requested
                 by the LESSEE.

27.            EXCELL
               SPREADSHEET
               EXHIBIT
                 The "Bachrach Building Rent Chart is appended to this
                 lease as Attachment II.  It is included for illustrative
                 purposes only and does not take precedence over the
                 written provisions of this lease.


27.            ENVIRONMENTAL
                 Notwithstanding anything to the contrary contained herein,
                 Lessor shall indemnify, defend and hold the Lessee
                 harmless against any Damages arising from, relating to or
                 constituting any liability, for investigative, remedial or
                 response actions or otherwise, under Environmental Laws,
                 arising out of the ownership, operation or condition of
                 the Business and/or its properties on or prior to the
                 Lease commencement date (notwithstanding the disclosure of
                 the possibility of such event in the IES Report or
                 otherwise).

                 Notwithstanding anything to the contrary contained herein,
                 Lessee shall indemnify, defend and hold the Lessor
                 harmless against any Damages arising from, relating to or
                 constituting any liability, for investigative, remedial or
                 response actions or otherwise, under Environmental Laws,
                 arising out of the operation or condition of the Business
                 subsequent to the Lease commencement date.

                 IN WITNESS WHEREOF, the LESSOR and LESSEE have hereunto
                 set their hands and common    seals this
                 _____________________ day of  _________________________
                 2008.



________________________       ________________________
LESSOR                         LESSEE
Gerald Entine, Partner         Craig Dunham
Bachrach, Inc.                 RMD, Inc


                           ATTACHMENT I
        ILLUSTRATION OF METHODOLOGY OF ALLOCATING EXPENSES

              CLOSING JUNE 05 OF CHARLES RIVER REALTY
                           June 30, 2007

GENERAL METHODOLOGY
    The mid-year and year end adjustments which must be made relate
to  the  portion  of  CRR  building expenses,  such  as  utilities,
maintenance,  and insurance with the Sub-S and LLC should  pick  up
from  CRR and vice-versa. It also concerns how much of the building
maintenance should be capitalized.

BUILDING MAINTENANCE - January 1 to June 30, 2007
1.    D&R Electric, Instant Signal and G.C. Paint are shared and is
  transferred in its entirety upstairs and then has 1/4  sent  back
  downstairs since almost all of this cost is indoor wiring for labs
  and work areas.
2.    The cost of repairing air conditioners to CRR was $0. Of this
  79%  belongs to RMD and LLC split 3/4 and 1/4. Thus 19.75% or  $0
  goes to LLC and 59.25% or $0 goes to RMD. Each entity should write
  their  check directly to CRR and enter under Bldg. Maintenance  -
  Separate.
 (Note  that because of changes in the occupancy, the new percentage
allocations are RMD 19.2%, RMD, Instruments 19.2% and CRR 5.5%.)
3.   The cost of carpentry to CRR was $123,949. Of this 79% belongs
  to  RMD and LLC split 3/4 and 1/4. Thus 19.75% or $24,480 goes to
  LLC  and 59.25% or $73,440 goes to RMD. Each entity should  write
  their  check directly to CRR and enter under Bldg. Maintenance  -
  Separate.
4.   The cost of plumbing to CRR was $4,832. Of this 79% belongs to
  RMD and LLC split 3/4 and 1/4. Thus 19.75% or $954 goes to LLC and
  59.25% or $2,863 goes to RMD. Each entity should write their check
  directly to CRR and enter under Bldg. Maintenance - Separate.
5.    The cost of masonry to CRR was $4,595. Of this 79% belongs to
  RMD and LLC split 3/4 and 1/4. Thus 19.75% or $908 goes to LLC and
  59.25% or $2,723 goes to RMD. Each entity should write their check
  directly to CRR and enter under Bldg. Maintenance - Separate.
6.    G.C. Painting did most of its work directly for LLC since  it
  works on specific lab and production areas. However, the cost  of
  the general projects for CRR was $0. Of this 79% belongs to RMD and
  LLC split 3/4 and 1/4. Thus 19.75% or $0 goes to LLC and 59.25% or
  $0  goes to RMD. Each entity should write their check directly to
  CRR and enter under Bldg. Maintenance - Separate.
7.    The  cost  of  floor repair to CRR was $4,418.  Of  this  79%
  belongs to RMD and LLC split 3/4 and 1/4. Thus 19.75% or $478 goes
  to LLC and 59.25% or $1,433 goes to RMD. Each entity should write
  their  check directly to CRR and enter under Bldg. Maintenance  -
  Separate.
8.    The  cost of locks to CRR was $0. Of this 79% belongs to  RMD
  and LLC split 3/4 and 1/4. Thus 19.75% or $0 goes to LLC and 59.25%
  or $0 goes to RMD. Each entity should write their check directly to
  CRR and enter under Bldg. Maintenance - Separate.
9.   The cost of windows to CRR was $22,205. Of this 79% belongs to
  RMD  and LLC split 3/4 and 1/4. Thus 19.75% or $4,385 goes to LLC
  and 59.25% or $13,156 goes to RMD. Each entity should write their
  check directly to CRR and enter under Bldg. Maintenance - Separate.
10.  The cost of utilities should be shared under separate billing.

INSURANCE - Bldg. - January 1 to June 30, 2007
1.    The cost of insurance should go by square feet. Since RMD has
  been paying for everything, (6x$2,879/mo. _ $17,276) for this six
  month period, CRR owes RMD 21% ($3,628).

UTILITIES - January 1 to June 30, 2007
1.    The cost of electricity ($36,911) and gas ($8,964) to CRR was
  $45,875. Of this 79% belongs to RMD and LLC split 3/4 and 1/4. Thus
  19.75%  or $9,060 goes to LLC and 59.25% or $27,181 goes to  RMD.
  Each  entity should write their check directly to CRR  and  enter
  under Utilities - Separate.

CHECKS TO BE WRITTEN - Jan. 1 to June 30, 2007

ITEM                CRR             RMD           LLC         Notes
D&R                   0               0             0
Air                   0               0             0
Conditioners
Carpentry             0          73,440        24,480
Plumbing              0           2,863           954
Masonry               0           2,723           908
Painting              0               0             0
Floor Repair          0           1,433           478
Lock Repair           0               0             0
Window                0          13,156         4,385
Repair
Subtotal              0         $93,615       $31,205
Insurance             3             628             0          0
Utilities          0 27             181         9,060
Rent                  0               0             0
Adjustment
Total            $3,628        $120,796       $40,265
               CRR-> RMD      RMD -> CRR  LLC-> CRR

Note  that  because of changes in the occupancy, the new percentage
allocations are RMD 19.2%, RMD, Instruments 19.2% and CRR 5.5%.

            CLOSING DECEMBER 07 OF CHARLES RIVER REALTY
                         December 31, 2007

GENERAL METHODOLOGY
The mid-year and year end adjustments which must be made relate to
the portion of CRR building expenses, such as utilities,
maintenance, and insurance with the Sub-S and LLC should pick up
from CRR and vice-versa.  As per the space allocation for the
building, now that RMD has taken over the VideoLink space, the
common space and that occupied by the other tenant comprises 0.0%.
RMD occupies 78% and LLC 22% of the remainder.  It also concerns
how much of the building maintenance should be capitalized.  The
detailed allocation of expenses is contained the allocation chart
later in this document.

BUILDING MAINTENANCE - July 1 to December 31, 2007
1.   The cost of air conditioning cleaning and freon to CRR was $0.
  All of this, except for special projects for common areas ($2,482),
  belongs to RMD and LLC split 78% and 22%.  Each entity should write
  their check directly to CRR under Bldg. Maintenance - Separate.
2.    The cost of air conditioning repairs to CRR was $6,875.   All
  of  this,  except for special projects for common areas ($2,873),
  belongs to RMD and LLC split 78% and 22%.  Each entity should write
  their check directly to CRR under Bldg. Maintenance - Separate.
3.   The cost of appliance repairs to CRR was $2,068.  All of this,
  except for special projects for common areas ($2,873), belongs to
  RMD  and  LLC split 78% and 22%.  Each entity should write  their
  check directly to CRR under Bldg. Maintenance - Separate.
4.   The cost of cabinets to CRR was $202.  All of this, except for
  special projects for common areas ($967), belongs to RMD and  LLC
  split 78% and 22%.  Each entity should write their check directly
  to CRR under Equip. Maintenance - Separate.
5.    The  cost  of  carpentry to CRR was $114,966.  All  of  this,
  except for special projects for common areas ($13,574), belongs to
  RMD  and  LLC split 78% and 22%.  Each entity should write  their
  check directly to CRR under Bldg. Maintenance - Separate.
6.    The  cost of door repairs to CRR was $0.  All of this, except
  for special projects for common areas ($0), belongs to RMD and LLC
  split 78% and 22%.  Each entity should write their check directly
  to CRR under Bldg. Maintenance - Separate.
7.    The  cost  of electric repairs to CRR was $0.  All  of  this,
  except for special projects for common areas ($0), belongs to RMD
  and  LLC split 78% and 22%.  Each entity should write their check
  directly to CRR under Bldg. Maintenance - Separate.
8.    The  cost  of floor repair to CRR was $5,232.  All  of  this,
  except for special projects for common areas ($4,880), belongs to
  RMD  and  LLC split 78% and 22%.  Each entity should write  their
  check directly to CRR under Bldg. Maintenance - Separate.
9.   The cost of hood repair to CRR was $0.  All of this belongs to
  RMD  and  LLC split 78% and 22%.  Each entity should write  their
  check directly to CRR under Bldg. Maintenance - Separate.
10.   The cost of Lighting to CRR was $0.  All of this, except  for
  special projects for common areas ($2,196), belongs to RMD and LLC
  split 78% and 22%.  Each entity should write their check directly
  to CRR under Bldg. Maintenance - Separate.
11.   The cost of Locks and Security Systems to CRR was $0.  All of
  this,  except  for  special projects for common  areas  ($1,182),
  belongs to RMD and LLC split 78% and 22%.  Each entity should write
  their check directly to CRR under Bldg. Maintenance - Separate.
12.   The  cost of masonry to CRR was $5,395.  All of this,  except
  for special projects for common areas ($3,077), belongs to RMD and
  LLC  split  78%  and 22%.  Each entity should write  their  check
  directly to CRR under Bldg. Maintenance - Separate.
13.   The cost of painting to CRR was $0.  All of this, except  for
  special projects for common areas ($3,404), belongs to RMD and LLC
  split 78% and 22%.  Each entity should write their check directly
  to CRR under Bldg. Maintenance - Separate.
14.   The cost of plumbing to CRR was $16,556.  All of this, except
  for special projects for common areas ($3,718), belongs to RMD and
  LLC  split  78%  and 22%.  Each entity should write  their  check
  directly to CRR under Bldg. Maintenance - Separate.
15.   The  cost of repairing radiators and steam pipes to  CRR  was
  $16,100.  All of this, except for special projects for common areas
  ($3,152), belongs to RMD and LLC split 78% and 22%.  Each  entity
  should write their check directly to CRR under Bldg. Maintenance -
  Separate.
16.   The cost of repairing stairs and railings to CRR was $0.  All
  of  this,  except for special projects for common areas ($1,137),
  belongs to RMD and LLC split 78% and 22%.  Each entity should write
  their check directly to CRR under Bldg. Maintenance - Separate.
17.   The  cost of repairing vacuum and pressurized air systems  to
  CRR was $0.  All of this belongs to RMD and LLC split 78% and 22%.
  Each  entity should write their check directly to CRR under Bldg.
  Maintenance - Separate.
18.   The  cost of repairing windows and mirrors to CRR was $8.173.
  All of this, except for special projects for common areas ($3,378),
  belongs to RMD and LLC split 78% and 22%.  Each entity should write
  their check directly to CRR under Bldg. Maintenance - Separate.
INSURANCE - Bldg. - July 1 to December 31, 2007
1.   The cost of insurance should go by square feet.  Since RMD has
  been  paying  for everything, (6x$2,150/mo. = $12,900)  for  July
  through December 07, CRR owes RMD 0% ($0), now that there  is  no
  longer any common space.
ELECTRICITY - July 1 to December 31, 2007
1.    The  cost  of electricity to CRR was $54,141.  Of  this  100%
  belongs to RMD and LLC split 78% and 22%.  Each entity should write
  their check directly to CRR under Utilities - Separate.
     CHECKS TO BE WRITTEN - July 1 to December 31, 2007
ITEM                 CRR         RMD         LLC      Notes
Repairs                 0     136,943         38,625
Insurance               0           0              0
Utilities               0      42,230         11,911
Total               $   0    $179,173        $50,536

                 CRR->RMD    RMD->CRR        LLC->CRR

CAPITALIZATION OF MAINTENANCE COSTS - December 31, 2007
1.   The cost of various maintenance items have been capitalized as
  per  the chart below, corresponding to zero percent for carpentry
  and zero percent for the other items which were just repairs to try
  to best reflect the correct distribution.



       ALLOCATION FOR BUILDING COSTS - CAPITALIZE VS EXPENSE
ITEM                   CRR-Total   Expense   Lshold  %Capital
                                             Improve.
Air Cond. Cleaning             0          0     0      0 %
Air Cond. Repairs          6,875      6,875     0      0 %
Appliances                 2,068      2,068     0      0 %
Cabinets                     202        202     0      0 %
Carpentry                114,966    114,966     0      0 %
Door Repairs                   0          0     0      0 %
Electrical Repairs             0          0     0      0 %
Floor Repair               5,232      5,232     0      0 %
Hood Repair (All RMD)          0          0     0      0 %
Lighting                       0          0     0      0 %
Locks                          0          0     0      0 %
Masonry                    5,395      5,395     0      0 %
Painting                       0          0     0      0 %
Plumbing                  16,556     16,556     0      0 %
Radiators, Steam          16,100     16,100     0      0 %
Pipes
Stairs and Railings            0          0     0      0 %
Vacuum Repairs   (All          0          0     0      0 %
RMD)
Windows & Mirrors          8,173      8,173     0      0 %
Total                   $175,567   $175,567    $0      0 %

REIMBURSEMENT OF EXPENSES FOR OTHER PROPERTIES - December 31, 2007
1.    The cost of any items managed by CRR but attributable to non-
  CRR properties has been reimbursed by a personal check from GE in
  an amount of $19,679.

            ALLOCATION OF BUILDING EXPENSES FOR DEC. 07
ITEM   Description             TOTAL     CRR         RMD        LLC
  1    Air Cond. Cleaning          0      0            0          0
  2    Air Cond. Repairs       6,875      0        5,363      1,513
  3    Appliances              2,068      0        1,613        455
  4    Cabinets                  202      0          158         44
  5    Carpentry               114,9      0       89,673     25,293
                                  66
  6    Door Repairs                0      0            0          0
  7    Electrical Repairs          0      0            0          0
  8    Floor Repair            5,232      0        4,081      1,151
  9    Hood Repair (All RMD)       0      0            0          0
 10    Lighting                    0      0            0          0
 11    Locks                       0      0            0          0
 12    Masonry                 5,395      0        4,208      1,187
 13    Painting                    0      0            0          0
 14    Plumbing                16,55      0       12,914      3,642
                                   6
 15    Radiators, Steam Pipes  16,10      0       12,558      3,542
                                   0
 16    Stairs and Railings         0      0            0          0
 17    Vacuum  Repairs   (All      0      0            0          0
       RMD)
 18    Windows & Mirrors       8,173      0        6,375      1,798
                               =====    ======     =====       ====
       Total                 175,567      0      136,943     38,625


                           ATTACHMENT II
  ILLUSTRATION OF METHODOLOGY OF ALLOCATING YEARLY COST INCREASES