METRIKA SYSTEMS CORP
POS AM, 1998-08-27
INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL
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As filed with the Securities and Exchange Commission on 
August 27, 1998                                      Registration No. 333-38371

                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549
                         -------------------------------
                         POST-EFFECTIVE AMENDMENT NO. 2
                             ON FORM S-3 TO FORM S-1
                             Registration Statement
                        Under the Securities Act of 1933
                        --------------------------------

                           METRIKA SYSTEMS CORPORATION
             (Exact name of registrant as specified in its charter)

                 Delaware                              33-0733537
     (State or other jurisdiction of                (I.R.S. Employer
      incorporation or organization)               Identification No.)


                               ---------------
                          5788 Pacific Center Boulevard
                           San Diego, California 92121
                                 (619) 450-9649
    (Address, including zip code, and telephone number, including area code,
                  of registrant's principal executive offices)
                               ---------------

                          Sandra L. Lambert, Secretary
                           Metrika Systems Corporation
                         c/o Thermo Electron Corporation
                                 81 Wyman Street
                                  P.O. Box 9046
                        Waltham, Massachusetts 02454-9046
                                 (781) 622-1000
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                                 ---------------

                                    Copy to:
                             Seth H. Hoogasian, Esq.
                                 General Counsel
                           Metrika Systems Corporation
                         c/o Thermo Electron Corporation
                                 81 Wyman Street
                                  P.O. Box 9046
                        Waltham, Massachusetts 02454-9046
                                 (781) 622-1000

                                 ---------------
<PAGE>

Approximate  date of commencement  of proposed sale to the public:  From time to
time after the effective date of this registration statement.


If the only securities  being requested on this form are being offered  pursuant
to dividend or interest reinvestment plans, please check the following box. [ ]

If any of the securities  being registered on this form are to be offered on a
delayed or continuous  basis  pursuant to Rule 415 under the Securities Act of
1933,  other than  securities  offered  only in  connection  with  dividend or
interest reinvestment plans, check the following box. [X]

If this form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the  Securities  Act of 1933,  check the  following box and
list the Securities Act registration  statement number of the earlier  effective
registration statement for the same offering. [ ]

If this form is a  post-effective  amendment filed pursuant to Rule 462(c) under
the Securities Act of 1933,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering. [ ]

If delivery of the prospectus is expected to be made pursuant to Rule 434,
check the following box. [  ]





<PAGE>


                  SUBJECT TO COMPLETION, DATED AUGUST 27, 1998

                                   PROSPECTUS
                                 967,828 Shares

                           METRIKA SYSTEMS CORPORATION

                                  Common Stock

     This  Prospectus  relates  to the  resale  of  967,828  shares  (the
"Shares") of Common  Stock,  par value $.01 per share (the "Common  Stock"),  of
Metrika  Systems  Corporation  ("Metrika  Systems" or the  "Company") by certain
shareholders  of the Company  (the  "Selling  Shareholders").  The Shares may be
offered from time to time in  transactions  on the American Stock  Exchange,  in
negotiated  transactions,  through the  writing of options on the  Shares,  or a
combination  of such methods of sale,  at fixed  prices that may be changed,  at
market  prices  prevailing  at the  time of  sale,  at  prices  related  to such
prevailing  market  prices or at negotiated  prices.  Such  transactions  may be
effected  by  the  sale  of  Shares  to  or  through  broker-dealers,  and  such
broker-dealers may receive compensation in the form of discounts, concessions or
commissions  from the sellers  and/or the purchasers of the Shares for whom such
broker-dealers  may act as  agent or to whom  they  sell as  principal,  or both
(which  compensation  to a  particular  broker-dealer  might  be  in  excess  of
customary commissions).  The Selling Shareholders and any broker-dealer who acts
in  connection  with  the  sale  of  Shares   hereunder  may  be  deemed  to  be
"underwriters" as that term is defined in the Securities Act of 1933, as amended
(the "Securities  Act"), and any commissions  received by them and profit on any
resale of the Shares as principal might be deemed to be  underwriting  discounts
and commissions under the Securities Act. The Shares were originally sold by the
Company in private placements pursuant to certain Stock Purchase Agreements with
the Company  dated  December  16,  1996 and  December  27,  1996 (the  "Purchase
Agreements"). See "Selling Shareholders".

                                 ---------------
The  Common  Stock  offered  hereby  involves a high  degree of risk.  See "RISK
FACTORS" at page 5.
                                 ---------------

THESE  SECURITIES  HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES  COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE  COMMISSION OR ANY STATE  SECURITIES  COMMISSION  PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS.  ANY  REPRESENTATION  TO THE CONTRARY
IS A CRIMINAL OFFENSE.
- ------------------------------------------------------------------------------

<PAGE>


    None of the proceeds from the sale of the Shares by the Selling Shareholders
will be received  by the  Company.  The Company has agreed to bear all  expenses
(other  than  underwriting  discounts  and  selling  commissions,  and  fees and
expenses of counsel or other advisers to the Selling Shareholders) in connection
with the  registration  and sale of the  Shares  being  registered  hereby.  The
Company  has  agreed to  indemnify  the  Selling  Shareholders  against  certain
liabilities,  including  liabilities  under the Securities Act as underwriter or
otherwise.

    The Company is a majority-owned subsidiary of Thermo Instrument Systems Inc.
("Thermo Instrument"),  which is a majority-owned  subsidiary of Thermo Electron
Corporation  ("Thermo  Electron").  The Common  Stock is traded on the  American
Stock Exchange under the symbol "MKA". On August 27, 1998, the reported  closing
price of the Common Stock on the American Stock Exchange was $11.25 per share.

               The date of this Prospectus is August __, 1998.

                                 ---------------

    No  dealer,  salesman  or  other  person  has  been  authorized  to give any
information  or to make  any  representations  other  than  those  contained  or
incorporated  by  reference  in this  Prospectus  regarding  the  Company or the
offering made by this  Prospectus,  and, if given or made,  such  information or
representations must not be relied upon as having been authorized by the Company
or by any other person.  Unless otherwise  noted,  all information  contained in
this  Prospectus is as of the date of this  Prospectus.  Neither the delivery of
this  Prospectus nor any sale or distribution  and resale made hereunder  shall,
under any circumstances, create any implication that there has been no change in
the affairs of the  Company  since the date  hereof.  This  Prospectus  does not
constitute  an offer to sell or a  solicitation  of an offer to buy any security
other than the securities covered by this Prospectus,  nor does it constitute an
offer to or solicitation  of any person in any  jurisdiction in which such offer
or solicitation may not be lawfully made.

                               ---------------

<PAGE>



                              AVAILABLE INFORMATION

    The Company is subject to the  informational  requirements of the Securities
Exchange  Act of 1934,  as  amended  (the  "Exchange  Act"),  and in  accordance
therewith  files  reports,  proxy  statements  and  other  information  with the
Securities  and Exchange  Commission  (the  "Commission").  Such reports,  proxy
statements  and other  information  can be  inspected  and  copied at the public
reference  facilities  maintained by the  Commission at 450 Fifth Street,  N.W.,
Washington, D.C. 20549, and at the following Regional Offices of the Commission:
500 West Madison Street, Suite 1400, Chicago,  Illinois 60661, and 7 World Trade
Center,  Suite 1300, New York, New York 10048.  Copies of such material can also
be obtained  from the Public  Reference  Section of the  Commission at 450 Fifth
Street,  N.W.,  Washington,  D.C. 20549 at prescribed rates. The Commission also
maintains a Web site that contains reports, proxy and information statements and
other  information  regarding  registrants  that  file  electronically  with the
Commission,   including   the   Company;   the  address  of  such  Web  site  is
http://www.sec.gov.  The Common  Stock of the Company is listed on the  American
Stock Exchange, and the reports, proxy statements and other information filed by
the Company with the  Commission can be inspected at the offices of the American
Stock Exchange, 86 Trinity Place, New York, New York 10006.

    This Prospectus, which constitutes part of a Registration Statement filed by
the Company with the Commission  under the Securities  Act, omits certain of the
information contained in the Registration Statement. Reference is hereby made to
the  Registration  Statement  and to the exhibits  relating  thereto for further
information  with  respect  to  the  Company  and  the  Shares  offered  hereby.
Statements  contained herein concerning  provisions of documents are necessarily
summaries of such documents,  and each statement is qualified in its entirety by
reference to the applicable document filed with the Commission.

    The Company  undertakes to provide  without  charge to each person to whom a
copy of this  Prospectus has been  delivered,  on the written or oral request of
such  person,  a copy of any or all of the  documents  that  have been or may be
incorporated  in this  Prospectus by reference,  other than certain  exhibits to
such  documents.  Requests  for such  copies  should be directed  to:  Sandra L.
Lambert,   Secretary,   Metrika   Systems   Corporation,   c/o  Thermo  Electron
Corporation, 81 Wyman Street, P. O. Box 9046, Waltham,  Massachusetts 02454-9046
(telephone: (781) 622-1000).


<PAGE>



                                   THE COMPANY

     The Company develops,  manufactures and markets on-line  industrial process
optimization   systems  that  employ   proprietary   ultra-high  speed  advanced
scientific  measurement  technologies for applications in raw materials analysis
and finished materials quality control. The Company operated as two divisions of
Thermo Instrument until its incorporation as a Delaware  corporation in November
1996.  In  connection  with  the  Company's  incorporation,   Thermo  Instrument
transferred  to  the  Company  the  assets,  liabilities  and  business  of  its
Gamma-Metrics  subsidiary and Radiometrie  division  ("Radiometrie") in exchange
for 5,000,000 shares of the Company's common stock. Unless the context otherwise
requires,  references in this Prospectus to the Company or Metrika Systems refer
to Metrika Systems Corporation and its subsidiaries and the predecessor business
which  constitute  the Company.  The Company's  on-line raw  materials  analyzer
business  is  conducted  by its  Gamma-Metrics  subsidiary  based in San  Diego,
California,  and its on-line  finished  materials  quality  control  business is
conducted by its Radiometrie  division with operations in Erlangen,  Germany and
Gloucester, England.

     On August 12, 1998,  Thermo  Electron  issued a press  release  regarding a
proposed   reorganization  at  Thermo  Electron   involving  certain  of  Thermo
Electron's subsidiaries, including the Company.

     In the press  release,  Thermo  Electron  announced that the Company may be
merged with ONIX  Systems  Inc.  ("ONIX"),  a  majority-owned,  publicly  traded
subsidiary of Thermo  Instrument  and with Thermo  Sentron Inc.  ("Sentron"),  a
majority-owned,  publicly traded subsidiary of Thermedics Inc., which in turn is
a majority-owned,  publicly traded  subsidiary of Thermo Electron.  The combined
entity  resulting  from the merger of the Company,  ONIX and Sentron  would be a
majority-owned, publicly traded subsidiary of Thermo Instrument. Shareholders of
each of the Company,  ONIX and Sentron would receive  shares of the common stock
of the  combined  entity in  exchange  for their  shares of common  stock of the
Company, ONIX and Sentron,  respectively.  The completion of this transaction is
subject  to  numerous  conditions,  including  the  establishment  of prices and
exchange ratios,  confirmation of anticipated tax consequences,  approval by the
directors  of  each  of  the  Company,  ONIX,  Sentron,  Thermo  Instrument  and
Thermedics,  including the independent directors of such companies,  negotiation
and execution of a definitive merger agreement,  clearance by the Securities and
Exchange  Commission of any necessary  documents in connection with the proposed
transaction, approval by the directors of Thermo Electron, and fairness opinions
from one or more investment  banking firms on certain  financial  aspects of the
transaction.

     As of August 27, 1998, Thermo Instrument owned  approximately  60.9% of the
Company's  outstanding Common Stock. The Company's  principal  executive offices
are located at 5788 Pacific Center Boulevard,  San Diego,  California 92121, and
its telephone number is (619) 450-9649.


<PAGE>



                                  RISK FACTORS

     In connection with the "safe harbor"  provisions of the Private  Securities
Litigation  Reform Act of 1995, the Company  wishes to caution  readers that the
following important factors,  among others, in some cases have affected,  and in
the future could affect, the Company's actual results and could cause its actual
results in 1998 and beyond to differ  materially  from  those  expressed  in any
forward-looking statements made by, or on behalf of, the Company.

     Dependence on Capital Spending  Policies.  The Company's  customers include
coal burning utilities,  coal mines, cement manufacturers,  and manufacturers of
web-type  materials  such as steel,  plastic  and rubber.  The capital  spending
policies of these companies can have a significant  effect on the demand for the
Company's  products.  Such  policies  are based on a wide  variety  of  factors,
including  the  resources  available  to  make  such  purchases,   the  spending
priorities  among various types of process  control  equipment or techniques and
policies  regarding  capital  expenditures  during  recessions.  Any decrease in
capital  spending by these customers could have a material adverse effect on the
Company's business and results of operations.  Further,  the Company's growth is
dependent in part on  construction  and upgrade of  manufacturing  plants in the
basic  materials  industries.  A recession in one or more markets  could cause a
slowdown or reduction in capital spending and in new plant construction.

     Uncertainty of Market Acceptance of New Products.  Certain of the Company's
products  represent  alternatives to traditional  instruments and methods.  As a
result,  such  products  may be slow to  achieve,  or may  not  achieve,  market
acceptance,  as customers  may seek further  validation  of the  efficiency  and
efficacy  of the  Company's  technology.  This is  particularly  true  where the
purchase of the product  requires a  significant  capital  commitment.  Further,
because  on-line  process  control  systems are  incorporated  into a customer's
production  line,  a decision to invest in these  systems  involves  significant
operating risks if the system fails or shuts down. The Company intends to expand
its product base by adapting its proprietary  technologies  for new applications
in broader  industry  segments  including the  pharmaceutical,  agrochemical and
industrial  chemical  industries.  The Company  believes  that, to a significant
extent,  its growth prospects  depend on the continuing  acceptance by a broader
group of  customers  and by broader  industry  segments of its new  products and
technologies.  There can be no assurance  that the Company will be successful in
adapting its proprietary  technologies for new applications,  in obtaining these
acceptances  or, if  obtained,  that such  acceptances  will be  sustained.  The
failure of the  Company  to obtain and  sustain  such  acceptances  could have a
material adverse effect on the Company's business and results of operations.
<PAGE>

     Technological  Change and New  Products.  The market  for  on-line  process
optimization systems is characterized by changing technology,  evolving industry
standards  and new product  introductions.  The  Company's  future  success will
depend in part upon its ability to enhance its existing  products and to develop
and  introduce  new  products  and   technologies  to  meet  changing   customer
requirements and to successfully serve broader industry segments. The Company is
currently devoting significant  resources toward the enhancement of its existing
products and the development of new products and  technologies.  There can be no
assurance  that the Company  will  successfully  complete  the  enhancement  and
development of these products in a timely fashion or that the Company's  current
or future  products will satisfy the needs of the on-line  process  optimization
systems  markets.  Any failure to complete the  enhancement  and  development of
these  products or the failure of the  Company's  current or future  products to
satisfy  market  needs  could have a material  adverse  effect on the  Company's
business and results of operations.

     Risks Associated with Acquisition Strategy. The Company's strategy includes
the  acquisition of businesses and  technologies  that complement or augment the
Company's  existing  product  lines.  Promising  acquisitions  are  difficult to
identify  and  complete  for a number of reasons,  including  competition  among
prospective  buyers,  the need for  regulatory  approvals,  including  antitrust
approvals,  and the high  valuations of businesses  resulting from  historically
high stock prices in many countries.  There can be no assurance that the Company
will be able to complete future acquisitions or that the Company will be able to
successfully   integrate  any  acquired  business.  In  order  to  finance  such
acquisitions,  it may be  necessary  for the Company to raise  additional  funds
through public or private financings. Any equity or debt financing, if available
at all, may be on terms which are not  favorable to the Company and, in the case
of equity financing, may result in dilution to the Company's stockholders.

     International  Operations and International  Sales. In 1997, 1996 and 1995,
sales originating outside the U.S. accounted for 51%, 56% and 58%, respectively,
of the Company's  total  revenues.  In addition,  in 1997,  1996 and 1995,  U.S.
export sales  accounted  for 33%, 26% and 23%,  respectively,  of the  Company's
total  revenues.  The Company  anticipates  that sales outside the U.S. and U.S.
export  sales will  continue  to account  for a  significant  percentage  of the
Company's total revenues. The Company intends to continue to expand its presence
in  international  markets.  International  revenues  are subject to a number of
risks,  including  the  following:  agreements  may be  difficult to enforce and
receivables  difficult  to collect  through a foreign  country's  legal  system;
foreign  customers may have longer payment cycles;  foreign countries may impose
additional  withholding  taxes or otherwise  tax the Company's  foreign  income,
impose  tariffs or adopt  other  restrictions  on  foreign  trade;  U.S.  export
licenses may be difficult to obtain; the protection of intellectual  property in
foreign countries may be more difficult to enforce; and fluctuations in exchange
<PAGE>

rates may affect product demand and may adversely  affect the  profitability  in
U.S. dollars of products and services provided by the Company in foreign markets
where  payment  for the  Company's  products  and  services is made in the local
currency.  In 1997,  effects of  currency  translation,  due to a stronger  U.S.
dollar,  decreased revenues by $2.3 million.  Further, a significant  portion of
the Company's business is conducted in foreign countries,  particularly Germany.
Foreign  operations  are also subject to certain risks such as general  economic
conditions in the countries in which the Company operates, unexpected changes in
regulatory  requirements,   compliance  with  a  variety  of  foreign  laws  and
regulations  and  overlap  of  different  tax  structures.  Tax rates in certain
foreign  countries  exceed that of the United States and foreign earnings may be
subject to  withholding  requirements  or the  imposition  of tariffs,  exchange
controls  or other  restrictions.  There can be no  assurance  that any of these
factors will not have a material  adverse  effect on the Company's  business and
results of operations.

     Competition.  The Company encounters intense competition in the sale of its
on-line finished  materials quality control products.  The Company believes that
the  principal  competitive  factors  affecting  the market for on-line  process
optimization systems include quality and reliability,  accuracy, price, customer
service and support, ease of use, distribution channels,  technical features and
compatibility with customers' manufacturing processes.  Certain of the Company's
competitors have greater  resources,  manufacturing and marketing  capabilities,
technical  staff and  production  facilities  than  those of the  Company.  As a
result,  they may be able to adapt more quickly to new or emerging  technologies
and changes in customer  requirements,  or to devote  greater  resources  to the
promotion and sale of their products than can the Company. Further,  competition
with respect to all of the Company's  products  could  increase if new companies
enter the market or if existing  competitors  expand their product lines.  There
can  be  no  assurance  that   competitors  of  the  Company  will  not  develop
technological innovations that will render products of the Company obsolete.

     Proprietary  Rights.  Proprietary rights relating to the Company's products
will be protected from unauthorized use by third parties only to the extent that
they  are  covered  by  valid  and  enforceable  patents  or are  maintained  in
confidence as trade  secrets.  There can be no assurance that any patents now or
hereafter  owned by the Company  will  afford  protection  against  competitors.
Proceedings  initiated  by the Company to protect its  proprietary  rights could
result  in   substantial   costs  to  the  Company.   Recently,   the  Company's
Gamma-Metrics  subsidiary  initiated a lawsuit in the Federal  District Court in
San Diego, California,  alleging among other things, patent infringement against
Scantech  Limited  and  its  subsidiary  Mineral  Control  Instrumentation  Ltd.
Scantech  Limited  has  filed  a  counterclaim  against  Gamma-Metrics  alleging
antitrust  violations  and unfair  competition.  There can be no assurance  that
<PAGE>

competitors of the Company,  some of whom have  substantially  greater resources
than  those of the  Company,  will not  initiate  litigation  to  challenge  the
validity of the Company's patents,  or that they will not use their resources to
design  comparable  products  that do not infringe the  Company's  patents.  The
Company could incur substantial costs and diversion of management resources with
respect to the defense of any such claims,  which could have a material  adverse
effect  on  the  Company's  business,   financial  condition,   and  results  of
operations.  Furthermore,  parties  making such claims  could  secure a judgment
awarding  substantial  damages, as well as injunctive or other equitable relief,
which  could  effectively  block  the  Company's  ability  to make,  use,  sell,
distribute or market its products and services in the U.S. and abroad. There may
also be  pending  or issued  patents  held by parties  not  affiliated  with the
Company that relate to the Company's products or technologies. In the event that
a claim  relating to proprietary  technology or information is asserted  against
the  Company,  the  Company  may need to acquire  licenses  to, or  contest  the
validity of, any such  competitor's  proprietary  technology.  It is likely that
significant  funds  would  be  required  to  contest  the  validity  of any such
competitor's proprietary technology.  There can be no assurance that any license
required  under  any  such  competitor's  proprietary  technology  would be made
available  on  acceptable  terms or that the Company  would  prevail in any such
contest.  There can be no  assurance  that the  steps  taken by the  Company  to
protect its proprietary rights will be adequate to prevent  misappropriation  of
its technology or independent  development by others of similar  technology.  In
addition,   the  laws  of  some  jurisdictions  do  not  protect  the  Company's
proprietary  rights to the same  extent as the laws of the U.S.  There can be no
assurance that these protections will be adequate.

     Dependence on Sole-source  Suppliers.  Various  components of the Company's
products are supplied by sole-source  vendors.  The Company has not  experienced
significant  difficulty in obtaining  adequate supplies from these vendors,  and
has identified alternate suppliers.  However, there can be no assurance that the
unanticipated  loss of a single vendor would not result in delays in shipment or
in the  introduction  of new  products.  Any such  delays  could have a material
adverse effect on the Company's business or results of operations.

     Government  Regulations  and  Approvals.  The  market  for  certain  of the
Company's products,  both in the U.S. and abroad, is subject to or influenced by
various domestic and foreign clean air and consumer protection laws. The Company
designs,  develops and markets its products,  in part,  to meet  customer  needs
created  by  existing  and  anticipated  regulations,  and any  changes in these
regulations may adversely affect consumer demand for the Company's products.
<PAGE>

     Potential  Fluctuations  in Quarterly  Performance.  Many of the  Company's
products are large systems that may require  significant  capital  expenditures.
Consequently,  the timing of sales of these  systems  could affect the Company's
quarterly earnings.  Further, the Company's quarterly operating results may also
vary significantly  depending on a number of other factors,  including the size,
timing and shipment of individual  orders,  changes in pricing by the Company or
its  competitors,  discount  levels,  seasonality of revenue,  foreign  currency
exchange  rates,  the mix of  products  sold,  the  timing of the  announcement,
introduction  and  delivery of new product  enhancements  by the Company and its
competitors and general economic conditions.  Generally,  the Company recognizes
product revenues upon shipment of its products.  Revenues on  substantially  all
contracts are recognized using the  percentage-of-completion  method. Typically,
the Company  experiences  higher revenues in the second half of each year due to
seasonality  experienced  by its  on-line  finished  materials  quality  control
business  primarily  because customers tend to place their orders earlier in the
year so that they can have the  systems  installed  either  during  the  holiday
season in the third  quarter  or  between  Christmas  and the New Year.  Because
certain  operating  expenses of the Company  are based on  anticipated  capacity
levels and a high  percentage of the Company's  expenses are fixed for the short
term,  a small  variation  in the timing of  recognition  of  revenue  can cause
significant  variations in operating results from quarter to quarter.  There can
be no  assurance  that any of these  factors  will not have a  material  adverse
effect on the Company's business or results of operations.

     Potential Impact of Year 2000 on Processing of Date-Sensitive  Information.
The Company is currently  assessing the potential impact of the year 2000 on the
processing  of   date-sensitive   information  by  the  Company's   computerized
information  systems and on products  sold as well as products  purchased by the
Company.  The Company believes that its internal information systems and current
products  are either  year 2000  compliant  or will be so prior to the year 2000
without incurring material costs. There can be no assurance,  however,  that the
Company will not experience  unexpected  costs and delays in achieving year 2000
compliance  for its internal  information  systems and current  products,  which
could result in a material  adverse  effect on the Company's  future  results of
operations.

      The Company is presently  assessing  the effect that the year 2000 problem
may have on its previously sold products.  The Company is also assessing whether
its key suppliers are adequately addressing this issue and the effect this might
have on the Company. The Company has not completed its analysis and is unable to
conclude at this time that the year 2000 problem as it relates to its previously
sold products and products purchased from key suppliers is not reasonably likely
to have a material adverse effect on the Company's future results of operations.
<PAGE>

      Dependence  on  Key  Personnel.   The  Company's   success  depends  to  a
significant  extent upon a number of key employees,  including members of senior
management. The loss of the services of one or more of these key employees could
have a material adverse effect on the Company.  The Company has not obtained and
does not intend to obtain key-man life insurance  policies for any key employee.
The Company  believes that its future success will depend in part on its ability
to  attract,  motivate  and retain  highly  skilled  technical,  managerial  and
marketing personnel.  Competition for such personnel is intense and there can be
no assurance that the Company will be successful in  attracting,  motivating and
retaining key  personnel.  The failure to hire and retain such  personnel  could
materially adversely affect the Company's business and results of operations.

     Potential  Conflict of  Interest.  For  financial  reporting  purposes  the
Company's   financial  results  are  included  in  the  consolidated   financial
statements of Thermo Instrument and Thermo Electron. The members of the Board of
Directors of the Company who are also  affiliated with Thermo Electron or Thermo
Instrument  will  consider  both the  short-term  and the  long-term  impact  of
operating  decisions  on the Company as well as the impact of such  decisions on
the consolidated financial results of Thermo Instrument and Thermo Electron. The
interests  of Thermo  Electron  and  Thermo  Instrument  on the one hand and the
Company on the other hand may differ.  The Company is an indirect  subsidiary of
Thermo Electron and is a party to various agreements with Thermo Electron. These
agreements may limit the Company's operating flexibility.

    Lack of Voting Control. The Company's  shareholders do not have the right to
cumulate  votes for the election of directors.  Thermo  Instrument  beneficially
owns approximately 60.9% of the voting stock of the Company. Accordingly, Thermo
Instrument  has the power to elect the entire  Board of Directors of the Company
and to approve or disapprove  any corporate  actions  submitted to a vote of the
Company's stockholders.

     Lack of Dividends.  The Company anticipates that for the foreseeable future
the  Company's  earnings,  if any,  will be retained for use in the business and
that  no  cash  dividends  will be paid  on the  Common  Stock.  Declaration  of
dividends  on the Common  Stock will depend  upon,  among other  things,  future
earnings,  the  operating and  financial  condition of the Company,  its capital
requirements and general business conditions.


<PAGE>


                              SELLING SHAREHOLDERS

    The following  table sets forth the names of the Selling  Shareholders,  the
number of shares of Common Stock owned by each Selling  Shareholder,  the number
of Shares  that may be  offered by each  Selling  Shareholder  pursuant  to this
Prospectus,  and the number of Shares each  Selling  Shareholder  will own after
completion of the offering,  assuming all of the Shares being offered hereby are
sold.
<TABLE>
<CAPTION>

- ---------------------------------------------------------------------------------------
<S>                                         <C>           <C>           <C>    
SELLING SHAREHOLDER                          SHARES OF    SHARES BEING   SHARES OWNED
                                            COMMON STOCK     OFFERED        AFTER
                                            OWNED PRIOR                 COMPLETION OF
                                               TO THE                    THE OFFERING
                                            OFFERING(1)
- ---------------------------------------------------------------------------------------
Harrogate Holdings Ltd.                             5,000         5,000              0
- ---------------------------------------------------------------------------------------
Topaz Investments and Management Inc.               1,500         1,500              0
- ---------------------------------------------------------------------------------------
Orsenna Ltd.                                        3,000         3,000              0
- ---------------------------------------------------------------------------------------
Pavlos and Efstathia Servetopoulos                  2,000         2,000              0
- ---------------------------------------------------------------------------------------
Efal Investment Co.                                 4,000         4,000              0
- ---------------------------------------------------------------------------------------
Efimia Chryssi                                        500           500              0
- ---------------------------------------------------------------------------------------
Alexandros Chryssis                                   500           500              0
- ---------------------------------------------------------------------------------------
Vasilios and Irini Lezos                              500           500              0
- ---------------------------------------------------------------------------------------
Aphrodite Trading Corp.                             3,500         3,500              0
- ---------------------------------------------------------------------------------------
Richard H. Hochman                                  6,650         6,650              0
- ---------------------------------------------------------------------------------------
James J. Albertine                                  1,667         1,667              0
- ---------------------------------------------------------------------------------------
John M. Albertine(2)                                8,332         8,332              0
- ---------------------------------------------------------------------------------------
The Acorn Fund                                    232,500        32,500        200,000
- ---------------------------------------------------------------------------------------
Kemper Technology Fund                             66,666        66,666              0
- ---------------------------------------------------------------------------------------
WNC Corporation                                    10,000        10,000              0
- ---------------------------------------------------------------------------------------
Bruce E. Toll                                      10,000        10,000              0
- ---------------------------------------------------------------------------------------
Harold S. Melcher                                  20,000        20,000              0
- ---------------------------------------------------------------------------------------
Dinesh Sachdeva                                     2,500         2,500              0
- ---------------------------------------------------------------------------------------
Richard V. Aghababian                               6,666         6,666              0
- ---------------------------------------------------------------------------------------
Thermo Opportunity Fund                            66,666        66,666              0
- ---------------------------------------------------------------------------------------
W.H.I. Growth Fund, L.P.                           50,000        50,000              0
- ---------------------------------------------------------------------------------------
Robert L. Rabuck                                    3,333         3,333              0
- ---------------------------------------------------------------------------------------
Edward Leshowitz Trustee of Angelo R.
Cali Irrevocable Trust Dated 07/01/79               2,500         2,500              0
- ---------------------------------------------------------------------------------------
Decaudaveine                                        2,500         2,500              0
- ---------------------------------------------------------------------------------------
Oddo & Cie                                         17,500        17,500              0
- ---------------------------------------------------------------------------------------
Ruffer Inv. Man. Ltd.                               5,000         5,000              0
- ---------------------------------------------------------------------------------------
Prolific International Fund PLC TC PI
Technology                                          5,000         5,000              0
- ---------------------------------------------------------------------------------------
Midland Bank Trust Company Limited                 17,500        17,500              0
- ---------------------------------------------------------------------------------------
NPI AM Re CD Marks Trust                            5,500         5,500              0
- ---------------------------------------------------------------------------------------
NPI AM Re IR & AD Marks                             2,750         2,750              0
- ---------------------------------------------------------------------------------------
NPI AM Re AIM Foundation                            5,500         5,500              0
- ---------------------------------------------------------------------------------------
NPI AM Re Beaie Markes                              2,750         2,750              0
- ---------------------------------------------------------------------------------------
NPI AM Re Marie Marks                               2,000         2,000              0
- ---------------------------------------------------------------------------------------
NPI AM Re NJ Marks                                  5,500         5,500              0
- ---------------------------------------------------------------------------------------
NPI AM Re CD Marks                                  2,000         2,000              0
- ---------------------------------------------------------------------------------------
Discount Bank and Trust Company                    25,000        25,000              0
- ---------------------------------------------------------------------------------------
Dresdner Bank (Switzerland) Ltd.                   15,000        15,000              0
- ---------------------------------------------------------------------------------------
ABN AMRO Bank (Schweiz)                            10,000        10,000              0
- ---------------------------------------------------------------------------------------
Soginvest Banca Lugano                              6,000         6,000              0
- ---------------------------------------------------------------------------------------
Pilot Trading Trust (3)                             5,000         5,000              0
- ---------------------------------------------------------------------------------------
Michael R. Turner                                   3,333         3,333              0
- ---------------------------------------------------------------------------------------
R. Hunter Morin                                     3,333         3,333              0
- ---------------------------------------------------------------------------------------
Darier, Hentsch & Cie                              33,333        33,333              0
- ---------------------------------------------------------------------------------------
Steven Ames                                         5,000         5,000              0
- ---------------------------------------------------------------------------------------
Myles H. Tanenbaum                                 25,000        25,000              0
- ---------------------------------------------------------------------------------------
Dr. Jondy L. Cohen                                  2,500         2,500              0
- ---------------------------------------------------------------------------------------
Jay A. Cohen                                        2,500         2,500              0
- ---------------------------------------------------------------------------------------
L & J Cohen Inc.                                   12,500        12,500              0
- ---------------------------------------------------------------------------------------
Leonard Cohen & Jean Cohen Trustees FBO
Leonard Cohen & Jean Cohen Revocable
Trust UAD 12/19/93                                 12,500        12,500              0
- ---------------------------------------------------------------------------------------
Atalanta Investment Co. Inc.                       25,000        25,000              0
- ---------------------------------------------------------------------------------------
Philip H. Geier                                    25,000        25,000              0
- ---------------------------------------------------------------------------------------
Yiska Moser Trust                                   8,000         8,000              0
- ---------------------------------------------------------------------------------------
HTOOB, Inc.                                         5,000         5,000              0
- ---------------------------------------------------------------------------------------
Alex E. Booth, Jr.                                  5,000         5,000              0
- ---------------------------------------------------------------------------------------
Morris Weiser, Trustee Morris Trust U/A/D
12/31/92                                            2,500         2,500              0
- ---------------------------------------------------------------------------------------
Julian I. Edison                                   20,000        20,000              0
- ---------------------------------------------------------------------------------------
Hope R. Edison                                      5,000         5,000              0
- ---------------------------------------------------------------------------------------
Eos Partners, LP                                   55,000        55,000              0
- ---------------------------------------------------------------------------------------
Harpel Family Partnership                           7,500         7,500              0
- ---------------------------------------------------------------------------------------
Rose Cali Custodian for Christopher J.
Cali Unif. Trans. Min. Act NJ                       1,500         1,500              0
- ---------------------------------------------------------------------------------------
Edward Leshowitz                                    2,000         2,000              0
- ---------------------------------------------------------------------------------------
John J. Cali                                        1,000         1,000              0
- ---------------------------------------------------------------------------------------
Jackie L. Stone                                     3,333         3,333              0
- ---------------------------------------------------------------------------------------
Seema Sachdeva and Rakesh Sachdeva                  1,350         1,350              0
- ---------------------------------------------------------------------------------------
William E. Phillips                                 3,500         3,500              0
- ---------------------------------------------------------------------------------------
Donald E. Noble(4)                                  1,500         1,500              0
- ---------------------------------------------------------------------------------------
The Benjamin Wood Painter Trust                       750           750              0
- ---------------------------------------------------------------------------------------
The Christopher Norwood Painter Trust                 750           750              0
- ---------------------------------------------------------------------------------------
Werner Kramer (5)                                  31,000         1,000         30,000
- ---------------------------------------------------------------------------------------
Comar Inc.                                          1,500         1,500              0
- ---------------------------------------------------------------------------------------
Ernesto A. Corte(6)                                38,600         3,500         35,100
- ---------------------------------------------------------------------------------------
Gilcy Partners Ltd. L.P.                            1,666         1,666              0
- ---------------------------------------------------------------------------------------
Bankers Trust, Trustee for Chrysler Corp.
Emp. #1 Pension Plan dated April 1, 1989
                                                  120,000       120,000              0
- ---------------------------------------------------------------------------------------
Denis A. Helm(7)                                   26,000         1,000         25,000
- ---------------------------------------------------------------------------------------
Green Gentury Balanced Fund                        12,500        12,500              0
- ---------------------------------------------------------------------------------------
Essex Special Growth Opportunities Fund LP
                                                   20,000        20,000              0
- ---------------------------------------------------------------------------------------
Demetrios Speliotis                                 6,000         6,000              0
- ---------------------------------------------------------------------------------------
Konstantinos & Vasilia Kanaris                        500           500              0
- ---------------------------------------------------------------------------------------
Tral & Co.                                         72,000        72,000              0
- ---------------------------------------------------------------------------------------
Clariden Bank                                      12,000        12,000              0
- ---------------------------------------------------------------------------------------
</TABLE>

     (1) Except as otherwise reflected in the footnotes to this table, all share
ownership includes Shares owned by the Selling  Shareholders and shares that the
Selling  Shareholders  have the right to acquire within 60 days of September 27,
1997, through the exercise of stock options.

     (2) John M. Albertine is a Director of Thermo Electron.

     (3) Pilot Trading  Trust is  controlled by Robert A. McCabe,  a Director of
Thermo Electron, and members of his family.

     (4) Donald E. Noble is a Director of Thermo Electron.

     (5) Werner Kramer is Executive Vice President of the Company.

     (6) Ernesto A. Corte is President,  Chief Executive  Officer and a Director
of the Company.

     (7) Denis A. Helm is Chairman of the Board of Directors of the Company.

      The Shares are being registered to permit public secondary  trading of the
Shares from time to time by the Selling  Shareholders.  All of the Shares  being
offered  by the  Selling  Shareholders  were  sold  by the  Company  in  private
placement  transactions  pursuant to Stock Purchase  Agreements with the Company
dated  December 16, 1996 and December 27, 1996 (the "Purchase  Agreements")  for
cash.

     In the Purchase Agreements, the Company agreed, among other things, to bear
all expenses (other than underwriting discounts,  selling commissions,  and fees
and  expenses of counsel and other  advisors  to the  Selling  Shareholders)  in
connection  with the  registration  and sale of the Shares being  offered by the
Selling  Shareholders.  See "Sale of Shares." The Company intends to prepare and
file such amendments and supplements to the Registration Statement of which this
Prospectus forms a part as may be necessary to keep the  Registration  Statement
effective  until all the Shares  registered  thereunder  have been sold pursuant
thereto  or  until,  by  reason  of Rule  144(k)  of the  Commission  under  the
Securities  Act or any other  rule of similar  effect,  the Shares are no longer
required to be registered for the sale thereof by the Selling Shareholders.
<PAGE>


                                 SALE OF SHARES


     The Company will not receive any of the proceeds  from this  offering.  The
Shares offered hereby may be sold from time to time by or for the account of any
of the  Selling  Shareholders  or by their  pledgees,  donees,  distributees  or
transferees  or other  successors in interest to the Selling  Shareholders.  The
Shares may be sold hereunder directly to purchasers by the Selling  Shareholders
in  negotiated  transactions;  by or through  brokers  or  dealers  in  ordinary
brokerage  transactions or transactions in which the broker solicits  purchases;
block  trades in which the broker or dealer will attempt to sell Shares as agent
but may position and resell a portion of the block as principal; transactions in
which a broker or dealer  purchases as principal for resale for its own account;
or through  underwriters  or agents.  The Shares may be sold at a fixed offering
price, which may be changed, at the prevailing market price at the time of sale,
at prices related to such prevailing market price or at negotiated  prices.  Any
brokers,  dealers,  underwriters or agents may arrange for others to participate
in any such  transaction and may receive  compensation in the form of discounts,
commissions or concessions from the Selling  Shareholders  and/or the purchasers
of the Shares.  Each Selling  Shareholder will be responsible for payment of any
and all commissions to brokers.

     The  aggregate  proceeds  to any Selling  Shareholder  from the sale of the
Shares  offered  hereby  will be the  purchase  price  of such  Shares  less any
broker's commission.

     In  order  to  comply  with  the  securities  laws of  certain  states,  if
applicable,  the  Shares  will  be  sold  in  such  jurisdictions  only  through
registered or licensed  brokers or dealers.  In addition,  in certain states the
Shares may not be sold unless they have been registered or qualified for sale in
the applicable  state or an exemption  from the  registration  or  qualification
requirement is available and is complied with.

     Any Selling  Shareholder  and any  broker-dealer,  agent or underwriter who
acts in  connection  with the sale of  Shares  hereunder  may be deemed to be an
"underwriter" as that term is defined in the Securities Act, and any commissions
received  by them and profit on any resale of the Shares as  principal  might be
deemed to be underwriting  discounts and  commissions  under the Securities Act.
The Company has agreed to indemnify  the Selling  Shareholders  against  certain
liabilities,  including  liabilities under the Securities Act as underwriters or
otherwise.


<PAGE>



                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

      The  following  documents  previously  filed  with the  Commission  by the
Company  (File No.  1-13085)  are  hereby  incorporated  in this  Prospectus  by
reference:

            (a)   Annual  Report on Form 10-K for the fiscal year ended  January
                  3, 1998;

            (b)   Quarterly  Report on Form 10-Q for the quarter  ended April 4,
                  1998;

            (c)   Current  Report on Form 8-K filed on July 17,  1998  regarding
                  the  purchase  by  the  Company  of  Honeywell-Measurex   Data
                  Measurement Corporation;

            (d)   Quarterly  Report on Form 10-Q for the  quarter  ended July 4,
                  1998;

            (e)   Current  Report on Form 8-K filed on August 13, 1998 regarding
                  the proposed reorganization at Thermo Electron; and

            (f)   The  description of the Common Stock which is contained in the
                  Company's  Registration  Statement on Form 8-A filed under the
                  Exchange Act, as such  description may be amended from time to
                  time.

      All documents filed by the Company  pursuant to Sections 13(a),  13(c), 14
or 15(d) of the Exchange Act subsequent to the date of this Prospectus and prior
to  the  termination  of  the  offering  made  hereby  shall  be  deemed  to  be
incorporated  by reference into this Prospectus and to be a part hereof from the
respective dates of filing of such documents.  Any statement contained herein or
in a  document  all or any  portion  of which is  incorporated  or  deemed to be
incorporated  by reference  herein shall be deemed to be modified or  superseded
for purposes of this Prospectus to the extent that a statement  contained herein
or in any other  subsequently  filed  document  which also is or is deemed to be
incorporated by reference herein modifies or supersedes such earlier  statement.
Any  statement  so  modified  or  superseded  shall not be deemed,  except as so
modified or superseded, to constitute a part of this Prospectus.

      The  Company  will  provide  without  charge  to any  person  to whom this
Prospectus is delivered, upon the written or oral request of such person, a copy
of any or all of the foregoing documents incorporated herein by reference (other
than certain  exhibits to such  documents).  Requests for such copies  should be
directed to Sandra L.  Lambert,  Secretary,  Metrika  Systems  Corporation,  c/o
Thermo  Electron   Corporation,   81  Wyman  Street,  P.O.  Box  9046,  Waltham,
Massachusetts 02454-9046 (telephone: (781) 622-1000).

<PAGE>

                                LEGAL MATTERS

      Certain  legal  matters  relating to the Shares  offered  hereby have been
passed upon for the Company by Seth H. Hoogasian,  Esq.,  General Counsel of the
Company. Mr. Hoogasian is a full-time employee of Thermo Electron, is an officer
of the Company, Thermo Instrument and Thermo Electron, and owns or has the right
to acquire 2,500 shares of Common Stock, 20,973 shares of the common stock, $.10
par value per  share,  of Thermo  Instrument  and  103,028  shares of the common
stock, $1.00 par value per share, of Thermo Electron.


                                   EXPERTS

     The financial  statements of the Company incorporated by reference into and
the financial statement schedule incorporated by reference into the Registration
Statement  of which  this  Prospectus  forms a part have been  audited by Arthur
Andersen LLP, independent public accountants,  to the extent and for the periods
as  indicated  in their report with respect  thereto,  and are  incorporated  by
reference  herein in  reliance  upon the  authority  of said firm as  experts in
giving said reports.


<PAGE>



                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

              Item 14. Other Expenses of Issuance and Distribution.

     The expenses  incurred by the Company in  connection  with the issuance and
distribution of the securities being registered are as follows.  All amounts are
estimated except the Securities and Exchange Commission registration fee.

                                                                   Amount
     Registration fee - Securities and Exchange Commission  $     5,024.00
     Legal fees and expenses                                      5,000.00
     Accounting fees and expenses                                 5,000.00
     Printing and engraving expenses                             15,000.00
     Miscellaneous                                                2,000.00
          Total                                             $    32,024.00

     Item 15.  Indemnification of Directors and Officers.

     The Delaware  General  Corporation  Law and the  Company's  Certificate  of
Incorporation  and By-Laws  limit the  monetary  liability  of  directors to the
Company and to its stockholders and provide for indemnification of the Company's
officers and directors for  liabilities and expenses that they may incur in such
capacities.  In general,  officers and directors are indemnified with respect to
actions  taken in good faith in a manner  reasonably  believed  to be in, or not
opposed to, the best  interests of the Company and, with respect to any criminal
action or proceeding,  actions that the  indemnitee  had no reasonable  cause to
believe were unlawful. The Company also has indemnification  agreements with its
directors and officers that provide for the maximum  indemnification  allowed by
law.

     Thermo  Electron  Corporation  has an insurance  policy  which  insures the
directors and officers of Thermo  Electron and its  subsidiaries,  including the
Company,  against certain liabilities which might be incurred in connection with
the performance of their duties.

     The Selling  Shareholders  are obligated  under the Purchase  Agreements to
indemnify directors,  officers and controlling persons of the Registrant against
certain liabilities, including liabilities under the Securities Act.

     Item 16. Exhibits

     See the Exhibit Index included  immediately  preceding the exhibits to this
Registration Statement.
<PAGE>


     Item 17. Undertakings.

     (a) The undersigned Registrant hereby undertakes as follows:

(1)  To file,  during any period in which  offers or sales are being made, a 
     post-effective amendment to this registration statement:

            (i)   To include any  prospectus  required by Section  10(a)(3) of
                  the Securities Act of 1933;

            (ii)  To reflect  in the  prospectus  any facts or events  arising
                  after the effective date of the  registration  statement (or
                  the most recent  post-effective  amendment  thereof)  which,
                  individually  or in the  aggregate,  represent a fundamental
                  change  in the  information  set  forth in the  registration
                  statement.  Notwithstanding  the foregoing,  any increase or
                  decrease  in  volume  of  securities  offered  (if the total
                  dollar  value of  securities  offered  would not exceed that
                  which  was  registered)  and any  deviation  from the low or
                  high end of the  estimated  maximum  offering  range  may be
                  reflected  in  the  form  of   prospectus   filed  with  the
                  Commission  pursuant  to Rule  424(b) if, in the  aggregate,
                  the  changes in volume and price  represent  no more than 20
                  percent change in the maximum  aggregate  offering price set
                  forth in the "Calculation of Registration  Fee" table in the
                  effective registration statement;

            (iii) To include any material information with respect to the plan 
                  of distribution  not  previously  disclosed  in the  
                  registration statement or any material  change to such  
                  information  in the registration statement.

            Provided,  however,  that paragraphs (a)(1)(i) and (a)(1)(ii) do not
apply if the information  required to be included in a post-effective  amendment
by those  paragraphs is contained in periodic reports filed with or furnished to
the Commission by the Registrant  pursuant to Section 13 or Section 15(d) of the
Securities  Exchange  Act of 1934  that are  incorporated  by  reference  in the
registration statement.

(2)  That,  for the purpose of determining  any liability  under the Securities
      Act of 1933,  each such  post-effective  amendment shall be deemed to be a
      new registration statement relating to the securities offered therein, and
      the  offering  of such  securities  at that time shall be deemed to be the
      initial bona fide offering thereof.

(3)   To remove from registration by means of a post-effective  amendment any of
      the securities  being registered which remain unsold at the termination of
      the offering.
<PAGE>


      (b) The undersigned  Registrant  hereby  undertakes  that, for purposes of
determining  any liability  under the Securities Act of 1933, each filing of the
Registrant's  annual  report  pursuant to Section  13(a) or Section 15(d) of the
Securities  Exchange  Act of 1934  (and,  where  applicable,  each  filing of an
employee  benefit  plan's  annual  report  pursuant  to  Section  15(d)  of  the
Securities  Exchange  Act of 1934) that is  incorporated  by  reference  in this
registration  statement  shall  be  deemed  to be a new  registration  statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

      (c)  Insofar  as  indemnification   for  liabilities   arising  under  the
Securities Act of 1933 may be permitted to directors,  officers and  controlling
persons of the Registrant  pursuant to the foregoing  provisions,  or otherwise,
the  Registrant  has been  advised  that in the  opinion of the  Securities  and
Exchange  Commission such  indemnification is against public policy as expressed
in the Act and is,  therefore,  unenforceable.  In the  event  that a claim  for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
Registrant of expenses  incurred or paid by a director,  officer or  controlling
person of the  Registrant  in the  successful  defense  of any  action,  suit or
proceeding)  is  asserted by such  director,  officer or  controlling  person in
connection with the securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.




<PAGE>


                                   SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Post-Effective  Amendment No. 2 on Form S-3 to Registration
Statement on Form S-1 to be signed on its behalf by the  undersigned,  thereunto
duly authorized, in the City of San Diego, State of California, on this 27th day
of August, 1998.

                                           METRIKA SYSTEMS CORPORATION

                                          By:  /s/ Ernesto A. Corte
                                               Ernesto A. Corte
                                               President and Chief
                                               Executive Officer

      Pursuant  to  the  requirements  of  the  Securities  Act  of  1933,  this
Post-Effective Amendment No. 2 on Form S-3 to Registration Statement on Form S-1
has been  signed by the  following  persons in the  capacities  and on the dates
indicated.


  Signature                         Title                             Date
     
/s/ Ernesto A. Corte          President, Chief                   August 27, 1998
- ------------------------      Executive Officer
Ernesto A. Corte              and Director (Principal
                              Executive Officer)

John N. Hatsopoulos*          Senior Vice President              August 27, 1998
- ------------------------      and Chief Financial Officer
John N. Hatsopoulos           (Principal Financial Officer)

Paul F. Kelleher*             Chief Accounting                   August 27, 1998
- ------------------------      Officer (Principal
Paul F. Kelleher              Accounting Officer)

Denis A. Helm*                Chairman of the Board              August 27, 1998
- ------------------------      and Director
Denis A. Helm

Joseph A. Baute*              Director                           August 27, 1998
- ------------------------
Joseph A. Baute

Willard R. Becraft            Director                           August 27, 1998
- ------------------------
Willard R. Becraft

John T. Keiser*               Director                           August 27, 1998
- ------------------------
John T. Keiser

Earl R. Lewis*                Director                           August 27, 1998
- ------------------------
Earl R. Lewis

Arvin H. Smith*               Director                           August 27, 1998
- ------------------------
Arvin H. Smith
<PAGE>

* The  undersigned  Paul F.  Kelleher,  by signing his name hereto,  does hereby
execute  this  Post-Effective  Amendment  No.  2 on  Form  S-3  to  Registration
Statement on Form S-1 on behalf of each of the above-named  persons  pursuant to
powers of attorney  executed by such persons and filed with the  Securities  and
Exchange Commission.

                                                       /s/ Paul F. Kelleher
                                                       ------------------------ 
                                                       Paul F. Kelleher
                                                       Attorney-in-Fact


<PAGE>



                                  EXHIBIT INDEX


 Exhibit No.                      Description of Exhibit
        4     Specimen Common Stock Certificate (filed as Exhibit 4 to the
              Registrant's Registration Statement on Form S-1 [Registration
              No. 333-25243] and incorporated herein by reference).
        5     Opinion of Seth H. Hoogasian, Esq. (previously filed)
       23.1   Consent of Arthur Andersen LLP
       23.2   Consent of Seth H. Hoogasian, Esq. (contained in Exhibit 5)
        24    Power of Attorney (previously filed)










<PAGE>


                                                                    Exhibit 23.1



                  Consent of Independent Public Accountants


To Metrika Systems Corporation:

     As independent public  accountants,  we hereby consent to the incorporation
by reference of our report dated February 17, 1998, incorporated by reference in
this  registration  statement  and to all  references to our firm included in or
made a part of this registration statement on Form S-3.


                                                     Arthur Andersen LLP


Boston, Massachusetts
August 27, 1998




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