SECURITY AGREEMENT


         1.  GRANT.   For  value   received,   Datametrics,   Inc.,  a  Delaware
corporation,  ("DMC"),  in this security agreement (this "SECURITY  AGREEMENT"),
grants to Adrien A. Maught,  Jr. ("SECURED  PARTY"),  a security interest in all
right,  title,  and  interest  of DMC now or  hereafter  acquired,  in or to the
property more particularly  described in the schedule of collateral  attached to
this Security Agreement.

         2. ATTACHMENT AND OBLIGATION SECURED.  The security interest created by
this Security  Agreement will attach immediately upon execution of this Security
Agreement by DMC, and will secure all of DMC's  obligations to make any payments
to Secured Party under the Severance  Package as agreed by DMC in Section 6.1 of
the Amended  Employment  Agreement entered into between DMC and Secured Party on
August 12, 1997. Said security interest is issued concurrently with an identical
security  interest  issued to  Daniel P.  Ginns,  both such  security  interests
ranking pari passu to each other.  Except for said security interests granted by
DMC pursuant to the agreements  described on Exhibit E of the foregoing  Amended
Employment  Agreement  in favor of (1)  Imperial  Bank  and (2) the  holders  of
certain  Senior  Subordinated  Secured  Debentures,  DMC  has  not  granted  any
perfected security interests that now exists and are continuing.  (Imperial Bank
and  the  holders  of the  Senior  Subordinated  Secured  Debentures  of DMC are
collectively referred to herein as the "Senior Secured Lenders.")

         3. SECURITY INTEREST IN PROCEEDS.  The Collateral also includes any and
all  proceeds of the  Collateral  or any part of the  Collateral,  as defined in
Section  9306  of  the  Uniform   Commercial   Code  of  California  or  in  the
corresponding provisions of the Uniform Commercial Code of any other state.

         4.  SUBORDINATION.  The rights of Secured Party under the terms of this
Security  Agreement shall be subordinated to any right or interest of the Senior
Secured  Lenders  in any of the  Collateral  securing  the  payment  of: (a) the
principal  and accrued  and unpaid  interest  (whether  accruing on or after the
filing of any petition in bankruptcy or for  reorganization  relating to DMC) on
any obligation to the Senior Secured Lenders, whether outstanding on the date of
execution  of this  Security  Agreement  or  thereafter  created,  incurred,  or
assumed,  and any  guaranty,  endorsement,  or other  contingent  obligation  in
respect thereof;  and (b) any modification,  renewal,  extension or refunding of
any such indebtedness, liabilities or obligations.

         5.  DEFAULT.  Should DMC fail to perform any provision of this Security
Agreement  or should DMC fail to pay any  obligation  secured  by this  Security
Agreement  as it  becomes  due,  DMC shall be deemed  to be in  default  of this
Security Agreement under Division 9 of the Uniform Commercial Code of California
and under the  corresponding  provisions of the Uniform  Commercial  Code of any
other state. In such event,  Secured Party will have all the rights and remedies
afforded to a secured party under Division 9 of the Uniform  Commercial  Code of
California and under the corresponding provisions of the Uniform Commercial Code
of any other state on the date of this Security Agreement and may, in connection
therewith and subject to the rights of the Senior  Secured  Lenders,  also,  but
without limitation:


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a.       Enter the premises to assemble and take  possession of the  Collateral;
         and

b.       Enter the premises,  render the  Collateral,  if equipment,  usable and
         dispose of it in the manner provided by the Uniform  Commercial Code of
         California or by the Uniform Commercial Code of any other state.

         6. FINANCING STATEMENT.  Concurrent with the execution of this Security
Agreement,  the  parties  hereto,  DMC and  Secured  Party,  shall  execute  any
financing  statement or  statements  required to perfect the  security  interest
created by this Security Agreement.

         7.  WAIVER.  Neither  the  acceptance  of any partial  benefits  and/or
partial  payments  provided under the Severance  Package by Secured  party,  nor
Secured  Party's failure to exercise any of his rights or remedies on default by
DMC, shall be a waiver of the default, a modification of this Security Agreement
or of DMC's  obligations  under  this  Security  Agreement,  or a waiver  of any
subsequent default by DMC.

         8. NOTICES. Except as expressly provided for in this Security Agreement
or by law, any and all notices or other communications  required or permitted by
this  Security  Agreement  or by law to be served on,  given to, or delivered to
either party hereto, shall be in writing and shall be deemed duly served, given,
delivered,  and received  when  personally  delivered to the party to whom it is
directed,  or in lieu of such personal  delivery,  when  deposited in the United
States mail, first class postage  prepaid,  addressed to Secured Party or to DMC
at their respective  addresses set forth on the Schedule of Collateral  attached
hereto.  Either party may change its address for the purposes of this  paragraph
by giving  written  notice  of such  change  to the  other  party in the  manner
provided in this paragraph.

         9.  ATTORNEY'S  FEES.  If any  action at law or in equity is brought to
enforce or interpret the provisions of this Agreement or any other  agreement or
instrument  provided for herein,  the  prevailing  party in such action shall be
entitled  to recover as an element  of such  party's  costs of suit,  and not as
damages actual  attorneys' fees to be fixed by the court.  The prevailing  party
shall be the party who is  entitled  to recover  its costs of suit as ordered by
the court or by applicable  law or court rules.  A party not entitled to recover
its costs shall not recover attorneys' fees.

         10.  SUCCESSORS AND ASSIGNS.  This Security  Agreement shall be binding
upon and shall inure to the benefit of the parties hereto,  their successors and
assigns, but shall not be assigned,  transferred or set over in whole or in part
by any party without the prior written consent of each party.

         11.  GOVERNING  LAW.  This Security  Agreement  will be governed by and
construed in accordance with the laws of the State of California,  except to the
extent that the validity and perfection of the security interest  hereunder,  or
remedies hereunder, in respect of any particular Collateral, are governed by the
laws of a jurisdiction other than the State of California.



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         12.  SEVERABILITY.  Any provision of this Security  Agreement  which is
held to be  invalid  or  unenforceable  in any  jurisdiction  shall,  as to such
jurisdiction, be ineffective to the extent of such invalidity or uneforceability
without  invalidating the remaining  provisions hereof or affecting the validity
or enforceability of such provision in any other jurisdiction.

         13.  COUNTERPARTS.  This Security  Agreement may be executed in several
counterparts  and also so  executed  will  constitute  one  Security  Agreement,
binding on all the Parties.

         14. SOLE AND ONLY AGREEMENT.  This instrument  constitutes the sole and
only  agreement  between  the  parties  with  respect to the  Collateral  or the
security  interest in the Collateral  created by this Security  Agreement.  This
instrument  correctly  sets forth the rights,  duties,  and  obligations of each
party with respect to the Collateral and the security interest hereby created in
the Collateral as of this date. Any prior agreements, promises, negotiations, or
representations  concerning  the subject  matter of this Security  Agreement not
expressly set forth herein are no longer of any force and effect.


Effected on August 12, 1997 at ______________

DATAMETRICS, INC.                                    ADRIEN A. MAUGHT, JR.


By /s/ Stephen R. Gass                                /s/ Adrien A. Maught, Jr.
  ----------------------                              --------------------------
Name Stephen R. Gass
Title: Director and Chair of Compensation
       Committee and Chair of Audit Committee



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                             SCHEDULE OF COLLATERAL


DMC:                                Datametrics, Inc.
                                    21135 Erwin Street
                                    Woodland Hills, California 91367

SECURED PARTY:                      Adrien A. Maught, Jr.
                                    24 Ivy Lane
                                    Windsor, Connecticut 06095

All right,  title,  and  interest  of DMC,  how or  hereafter  acquired,  to the
following described property:

                           All personal property,  whether presently existing or
                           hereafter  created  or  acquired,  including  but not
                           limited to: All accounts,  chattel paper,  documents,
                           instruments,  money,  deposit  accounts  and  general
                           intangibles including returns,  repossessions,  books
                           and   records   relating   thereto,   and   equipment
                           containing   said  books  and   records.   All  goods
                           including  equipment  and  inventory.   All  proceeds
                           including without limitation, insurance proceeds. All
                           guarantees and other security therefor.



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                                    EXHIBIT E


1. The Security and Loan Agreements entered into between Datametrics Corporation
and Imperial Bank ("Bank") on March 4, 1997 securing loans made by Bank.

2. The  Security  Agreement  entered into between  Datametrics  Corporation  and
twelve Secured Parties on November 25, 1996 securing Senior Subordinated Secured
Debentures.




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