THERMO VOLTEK CORP
10-K, 1998-03-16
INSTRUMENTS FOR MEAS & TESTING OF ELECTRICITY & ELEC SIGNALS
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                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

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

                                    FORM 10-K
    (mark one)
    [ X ] Annual Report Pursuant to Section 13 or 15(d) of the Securities
          Exchange Act of 1934 for the fiscal year ended January 3, 1998

    [   ] Transition Report Pursuant to Section 13 or 15(d) of the
          Securities Exchange Act of 1934

                         Commission file number 1-10574

                               THERMO VOLTEK CORP.
             (Exact name of Registrant as specified in its charter)

    Delaware                                                       13-1946800
    (State or other jurisdiction of                          (I.R.S. Employer
    incorporation or organization)                        Identification No.)

    470 Wildwood Street, P.O. Box 2878
    Woburn, Massachusetts                                          01888-1578
    (Address of principal executive offices)                       (Zip Code)
       Registrant's telephone number, including area code: (617) 622-1000
           Securities registered pursuant to Section 12(b) of the Act:

        Title of each class         Name of each exchange on which registered
    ----------------------------    -----------------------------------------
    Common Stock, $.05 par value             American Stock Exchange

           Securities registered pursuant to Section 12(g) of the Act:
                                      None

    Indicate by check mark whether the Registrant (1) has filed all reports
    required to be filed by Section 13 or 15(d) of the Securities Exchange
    Act of 1934 during the preceding 12 months, and (2) has been subject to
    the filing requirements for at least the past 90 days. Yes [ X ]  No [  ]
    Indicate by check mark if disclosure of delinquent filers pursuant to
    Item 405 of Regulation S-K is not contained herein, and will not be
    contained, to the best of the Registrant's knowledge, in definitive proxy
    or information statements incorporated by reference into Part III of this
    Form 10-K or any amendment to this Form 10-K. [  ]

    The aggregate market value of the voting stock held by nonaffiliates of
    the Registrant as of January 30, 1998, was approximately $14,630,000.

    As of January 30, 1998, the Registrant had 8,839,370 shares of Common
    Stock outstanding.
                       DOCUMENTS INCORPORATED BY REFERENCE

    Portions of the Registrant's Annual Report to Shareholders for the year
    ended January 3, 1998, are incorporated by reference into Parts I and II.

    Portions of the Registrant's definitive Proxy Statement for the Annual
    Meeting of Shareholders to be held on June 1, 1998, are incorporated by
    reference into Part III.
PAGE
<PAGE>
                                     PART I

    Item 1. Business
            --------

    (a) General Development of Business
        -------------------------------

        Thermo Voltek Corp. (the Company or the Registrant) designs,
    manufactures, and markets test instruments and a range of products
    related to power amplification, conversion, and quality. The Company's
    test instruments simulate pulsed electromagnetic interference (pulsed
    EMI), radio frequency interference (RFI), and changes in AC voltage, to
    allow manufacturers of electronic systems and integrated circuits to test
    for electromagnetic compatibility (EMC), to ensure product quality and to
    meet certain regulatory requirements. The Company also provides EMC
    consulting and systems-integration services and distributes EMC-related
    products. The Company's power products include radio frequency (RF) and
    microwave power amplifiers, power-conversion equipment, and high-voltage
    and application-specific power supplies. These power products are used in
    communications, broadcast, research, and medical imaging applications. In
    July 1996, the Company acquired Pacific Power Source Corporation, a
    manufacturer of power-conversion equipment and programmable power
    amplifiers. In April 1997, the Company acquired Milmega Ltd., a
    manufacturer of microwave amplifiers. During 1997, the Company
    experienced lower demand for its EMC test products, due to the declining
    influence of IEC 801, the European Union directive on electromagnetic
    compatibility that took effect January 1, 1996, and, to a lesser extent,
    a decline in the component-reliability market for ESD test equipment that
    resulted from a slowdown in capital expenditures by the semiconductor
    industry. Due in part to these developments, during 1997 the Company
    implemented certain operational, organizational, and personnel changes.

        The Company was originally incorporated in 1960 under the name
    Universal Voltronics Corp. Thermedics Inc., a publicly traded subsidiary
    of Thermo Electron Corporation, acquired a controlling interest in the
    Company's common stock in March 1990. In November 1992, the Company's
    name was changed to Thermo Voltek Corp. As of January 3, 1998, Thermedics
    owned 5,771,208 shares of the Company's common stock, representing 65% of
    such stock outstanding. In addition to the Company's products, Thermedics
    develops, manufactures, and markets product quality-assurance systems,
    precision-weighing and inspection equipment, electrochemistry and
    microweighing products, security devices, and moisture-analysis systems,
    as well as implantable heart-assist systems, whole blood coagulation
    testing equipment, skin-incision devices, and other biomedical products.
    As of January 3, 1998, Thermo Electron owned 238,200 shares of the
    Company's common stock, representing 3% of such stock outstanding,
    including 186,500 shares that were purchased during 1997* in the open
    market for a total purchase price of $1,777,000. Thermo Electron provides
    analytical and monitoring instruments; biomedical products including
    heart-assist devices, respiratory-care equipment, and mammography
    systems; paper recycling and papermaking equipment; alternative-energy
    systems; industrial process equipment; and other specialized products.
    Thermo Electron also provides a range of services that include industrial

    * References to 1997, 1996, and 1995 herein are for the fiscal years
      ended January 3, 1998, December 28, 1996, and December 30, 1995,
      respectively.
                                        2PAGE
<PAGE>
    outsourcing, particularly in environmental-liability management,
    laboratory analysis, and metallurgical processing; and conducts advanced-
    technology research and development.

        Thermedics intends, for the foreseeable future, to maintain at least
    50% ownership of the Company. This may require the purchase by Thermedics
    of additional shares (or convertible notes that are then converted) of
    the Company from time to time as the number of outstanding shares of the
    Company increases. These or any other purchases by Thermedics may be made
    either in the open market or directly from the Company or Thermo Electron
    or pursuant to conversions of the subordinated convertible notes issued
    by the Company to Thermedics. During 1997, Thermedics purchased 799,875
    shares of the Company's common stock in the open market for a total
    purchase price of $7,376,000. See Notes 4 and 8 to Consolidated Financial
    Statements in the Company's 1997 Annual Report to Shareholders for a
    description of outstanding stock options and convertible obligations
    issued by the Company.

    Forward-looking Statements

        Forward-looking statements, within the meaning of Section 21E of the
    Securities Exchange Act of 1934, are made throughout this Annual Report
    on Form 10-K. For this purpose, any statements contained herein that are
    not statements of historical fact may be deemed to be forward-looking
    statements. Without limiting the foregoing, the words "believes,"
    "anticipates," "plans," "expects," "seeks," "estimates," and similar
    expressions are intended to identify forward-looking statements. There
    are a number of important factors that could cause the results of the
    Company to differ materially from those indicated by such forward-looking
    statements, including those detailed under the heading "Forward-looking
    Statements" in the Registrant's 1997 Annual Report to Shareholders, which
    statements are incorporated herein by reference.

    (b) Financial Information About Industry Segments
        ---------------------------------------------

        The Company conducts business in one industry segment.

    (c) Description of Business
        -----------------------

        The Company designs, manufactures, and markets test instruments and a
    range of products related to power amplification, conversion, and
    quality. The Company's test instruments simulate pulsed electromagnetic
    interference (pulsed EMI), radio frequency interference (RFI), and
    changes in AC voltage, to allow manufacturers of electronic systems and
    integrated circuits to test for electromagnetic compatibility (EMC).
    These products are used in the product-development, design-verification,
    and quality-assurance stages, enabling customers to optimize performance,
    reliability, and safety in the final design, and to meet industry
    standards and regulatory requirements, including a European Union (EU)
    directive that took effect in January 1996. The Company's power products
    include radio frequency (RF) and microwave power amplifiers,
    power-conversion equipment, and high-voltage and application-specific
    power supplies. These power products are used in communications,
    broadcast, research, and medical imaging applications.

                                        3PAGE
<PAGE>
        The Company's testing instruments fall into two main categories: (1)
    equipment to test completed electronic products, and (2) equipment to
    test individual electronic components such as integrated circuits.

        Product Testing Equipment. The Company's EMC testing systems for
    electronic products simulate pulsed EMI - including RFI, disturbances in
    electrical power, and natural and man-made phenomena such as lightning
    and static electricity - to allow manufacturers to check for resistance
    to these and other forms of potentially troublesome electronic pollution.
    These systems perform both immunity and emissions testing - to verify
    that completed electronic products are not only immune to EMI, but also
    that they are not emitting EMI. The Company's KeyTek Instrument
    division's ECAT(R) system integrates comprehensive pulsed EMI and
    power-quality failure simulation and testing with built-in diagnostic
    capabilities. KeyTek also offers a range of lower-cost instruments
    designed to test completed products for a particular type of pulsed EMI.
    KeyTek also manufactures the G-Strip, an RFI immunity tester that
    analyzes how effectively electronics resist the effects of radio
    frequency emitted by other electronic devices.

        Component-reliability Testing Equipment. KeyTek also manufactures EMC
    testing instruments that allow manufacturers to test electronic
    components and subassemblies, particularly integrated circuits and
    printed circuit boards, for immunity to electrostatic discharge (ESD)
    and electrical overstress (EOS). These products expose integrated
    circuits and printed circuit boards to controlled and repeatable stress
    levels, thereby determining their ability to withstand ESD and EOS.
    These products also simulate the damage that can occur during normal
    handling or operating procedures associated with the manufacturing,
    testing, and transportation of such components.

        The Company also provides EMC consulting and distribution services.
    Through its Comtest subsidiary, the Company distributes EMC-testing
    products for pulsed EMI and RFI immunity and emissions testing; provides
    a wide range of testing, consulting, training, and systems-integration
    services; and designs EMC test facilities. The Company also provides
    on-site management and service, and maintains testing and training
    facilities, at Comtest's Netherlands headquarters.

        The Company's power products, described below, have applications in
    both EMC and non-EMC areas. These include RF and microwave power
    amplifiers, power-conversion equipment, and high-voltage and
    application-specific power supplies.

        Power Amplifiers. Through its Kalmus Engineering and Milmega Ltd.
    divisions, the Company manufactures RF and microwave power amplifiers
    that have applications in EMC testing and other areas. When used in EMC
    test applications, the RF power amplifiers manufactured by Kalmus test
    products for immunity to conducted and radiated RFI. They are also
    suitable for a variety of laboratory and research applications where
    precise control over power level and frequency are required; in medical
    imaging applications; and in wireless communications applications,
    broadcasting, and mobile data communications. Milmega, acquired in April
    1997, designs and manufactures both RF and microwave power amplifiers.

                                        4PAGE
<PAGE>
    Microwave power amplifiers have frequencies of one gigaHertz and above.
    Milmega's products are suitable for EMC test and other areas, including
    research, communications, medical, and military applications.

        Power-conversion Equipment. The Company's Pacific Power Source
    Corporation division manufactures programmable power amplifiers that can
    be incorporated into EMC test equipment to assess how well electronics
    tolerate normal variations in the quality and quantity of AC voltage.
    These amplifiers are also used in other kinds of testing equipment and in
    application-specific power supplies. In October 1997, the Company
    established a new division, Global Power Systems, to market specialized
    power products, particularly for use in marine applications. Its initial
    product line is a family of dock-to-yacht power systems that convert
    power from an onshore source anywhere in the world to the voltage, phase,
    and frequency required by luxury yachts.

        High-voltage Power Supplies. Through its Universal Voltronics
    division, the Company designs, manufactures, and markets high-voltage
    power supplies, modulators, and related high-voltage equipment for
    industrial, medical, and security processes, and defense and scientific
    research applications. These systems transform utility-supplied AC power
    into the DC voltages and currents required by the user and allow precise
    control over the performance level desired for each application.

    Raw Materials

        A number of the components of the Company's EMC-testing products are
    supplied by sole-source vendors. Although the Company has not experienced
    significant difficulty in obtaining adequate supplies from these vendors,
    and believes that it would be able to identify alternate suppliers if
    necessary, there can be no assurance that the unanticipated loss of a
    single vendor would not result in delays in shipments or in the
    introduction of new products.

    Backlog

        The Company's backlog of firm orders is measured by the amount of
    unshipped orders and, with respect to long-term contracts, the amount of
    the contract reduced by the revenue that has been recognized to date on a
    percentage-of-completion basis. Certain of these orders are cancellable
    by the customer upon payment of a cancellation charge. The Company's
    backlog was $10.2 million and $10.3 million as of January 3, 1998, and
    December 28, 1996, respectively. The Company believes that substantially
    all of the backlog at January 3, 1998, will be shipped or completed
    during the next 12 months.


                                        5PAGE
<PAGE>
    Competition

        The Company is a leading supplier of EMC testing equipment. There are
    numerous companies worldwide that independently manufacture and market
    pulsed EMC test equipment for electronic products, and several more that
    independently manufacture and market component-reliability test
    equipment. The Company competes in this market primarily on the basis of
    performance, technical expertise, reputation, and price.

        In the market for RF power amplifiers and programmable power
    amplifiers, the Company competes with several companies worldwide based
    primarily on technical expertise, reputation, and price.

        In the market for high-voltage power supply systems of the general
    type manufactured and marketed by the Company, the Company competes with
    numerous companies for both contract and commercial sales primarily on
    the basis of technical expertise, product performance, reputation, and
    price.

        Substantially all of the Company's contract and commercial revenues
    are subject to intense competitive bidding. Some of the Company's
    competitors have substantially greater financial resources than those of
    the Company.

    Research and Development

        Research and development expenses for the Company were $3,620,000,
    $3,618,000, and $2,349,000 in 1997, 1996, and 1995, respectively.

    Environmental Protection Regulations

        The Company believes that compliance by the Company with federal,
    state, and local environmental protection regulations will not have a
    material adverse effect on its capital expenditures, earnings, or
    competitive position.

    Number of Employees

        As of January 3, 1998, the Company employed 278 people. Except for
    seven employees at Universal Voltronics, none of the Company's employees
    is represented by a union. The Company believes that relations with its
    employees are good.

    (d) Financial Information About Exports by Domestic Operations and
        --------------------------------------------------------------
        About Foreign Operations
        ------------------------

        Financial information about exports by domestic operations and about
    foreign operations is summarized in Note 11 to Consolidated Financial
    Statements in the Registrant's 1997 Annual Report to Shareholders, which
    information is incorporated herein by reference.


                                        6PAGE
<PAGE>
    (e) Executive Officers of the Registrant
        ------------------------------------

                                       Present Title (Year First Became
        Name                      Age  Executive Officer)
        ------------------------  ---  --------------------------------
        John W. Wood Jr.          54   Chairman of the Board and Chief
                                         Executive Officer (1990)
        Colin I.W. Baxter         66   President and Chief Operating
                                         Officer (1997)
        John N. Hatsopoulos       63   Chief Financial Officer (1990)
        Paul F. Kelleher          55   Chief Accounting Officer (1990)

        Each executive officer serves until his successor is chosen or
    appointed by the Board of Directors and qualified or until his earlier
    resignation, death, or removal. Messrs. Wood, Hatsopoulos, and Kelleher
    have held comparable positions for at least five years either with the
    Company, Thermedics, or Thermo Electron. Mr. Baxter has been President
    and Chief Operating Officer of the Company since January 1997. Mr. Baxter
    has been President of the Company's Kalmus division since May 1995, and
    from July 1996 to January 1997 was President of the Company's Pacific
    Power division. Prior to joining the Company, Mr. Baxter was President
    and Chief Executive Officer of Dranetz Technologies, Inc., a designer and
    manufacturer of electronic instruments for measuring and monitoring
    electrical power quality, demand, and sequence of events recorders. Mr.
    Wood is a Senior Vice President of Thermo Electron and the Chairman of
    the Board of Thermedics but devotes such portion of his time to the
    affairs of the Company as the Company's needs reasonably require. Messrs.
    Hatsopoulos and Kelleher are full-time employees of Thermo Electron but
    devote such time to the affairs of the Company as the Company's needs
    reasonably require.

    Item 2. Properties
            ----------

        The Company owns approximately 45,000 square feet of office,
    engineering, laboratory, and production space in Mount Kisco, New York,
    and leases approximately 110,000 square feet of office, engineering,
    laboratory, and production space under leases expiring from 1998 to 2010,
    principally in Massachusetts, Washington, California, The Netherlands,
    the United Kingdom, and Italy. The Company believes that these facilities
    are in good condition and are suitable and adequate for its present
    operations, and that suitable space is readily available if any of such
    leases are not extended.

    Item 3. Legal Proceedings
            -----------------

        Not applicable.


    Item 4. Submission of Matters to a Vote of Security Holders
            ---------------------------------------------------

        Not applicable.

                                        7PAGE
<PAGE>
                                     PART II

    Item 5. Market for Registrant's Common Equity and Related Stockholder
            -------------------------------------------------------------
            Matters
            -------

        Information concerning the market and market price for the
    Registrant's common stock, $.05 par value, and dividend policy is
    included under the sections labeled "Common Stock Market Information" and
    "Dividend Policy" in the Registrant's 1997 Annual Report to Shareholders
    and is incorporated herein by reference.

    Item 6. Selected Financial Data
            -----------------------

        The information required under this item is included under the
    sections labeled "Selected Financial Information" and "Dividend Policy"
    in the Registrant's 1997 Annual Report to Shareholders and is
    incorporated herein by reference.

    Item 7. Management's Discussion and Analysis of Financial Condition and
            ---------------------------------------------------------------
            Results of Operations
            ---------------------

        The information required under this item is included under the
    heading "Management's Discussion and Analysis of Financial Condition and
    Results of Operations" in the Registrant's 1997 Annual Report to
    Shareholders and is incorporated herein by reference.

    Item 8. Financial Statements and Supplementary Data
            -------------------------------------------

        The Registrant's Consolidated Financial Statements as of January 3,
    1998, and Supplementary Data are included in the Registrant's 1997 Annual
    Report to Shareholders and are incorporated herein by reference.

    Item 9. Changes in and Disagreements with Accountants on Accounting and
            ---------------------------------------------------------------
            Financial Disclosure
            --------------------

        Not applicable.




                                        8PAGE
<PAGE>
                                    PART III

    Item 10. Directors and Executive Officers of the Registrant
             --------------------------------------------------

        The information concerning directors required under this item is
    incorporated herein by reference from the material contained under the
    caption "Election of Directors" in the Registrant's definitive proxy
    statement to be filed with the Securities and Exchange Commission
    pursuant to Regulation 14A, not later than 120 days after the close of
    the fiscal year. The information concerning delinquent filers pursuant to
    Item 405 of Regulation S-K is incorporated herein by reference from the
    material contained under the caption "Section 16(a) Beneficial Ownership
    Reporting Compliance" under the caption "Stock Ownership" in the
    Registrant's definitive proxy statement to be filed with the Securities
    and Exchange Commission pursuant to Regulation 14A, not later than 120
    days after the close of the fiscal year.

    Item 11. Executive Compensation
             ----------------------

        The information required under this item is incorporated herein by
    reference from the material contained under the caption "Executive
    Compensation" in the Registrant's definitive proxy statement to be filed
    with the Securities and Exchange Commission pursuant to Regulation 14A,
    not later than 120 days after the close of the fiscal year.

    Item 12. Security Ownership of Certain Beneficial Owners and Management
             --------------------------------------------------------------

        The information required under this item is incorporated herein by
    reference from the material contained under the caption "Stock Ownership"
    in the Registrant's definitive proxy statement to be filed with the
    Securities and Exchange Commission pursuant to Regulation 14A, not later
    than 120 days after the close of the fiscal year.

    Item 13. Certain Relationships and Related Transactions
             ----------------------------------------------

        The information required under this item is incorporated herein by
    reference from the material contained under the caption "Relationship
    with Affiliates" in the Registrant's definitive proxy statement to be
    filed with the Securities and Exchange Commission pursuant to Regulation
    14A, not later than 120 days after the close of the fiscal year.





                                        9PAGE
<PAGE>
                                     PART IV

    Item 14. Exhibits, Financial Statement Schedules, and Reports on Form 8-K
             ----------------------------------------------------------------

       (a,d) Financial Statements and Schedules
             ----------------------------------

             (1) The consolidated financial statements set forth in the list
                 below are filed as part of this Report.

             (2) The consolidated financial statement schedule set forth in
                 the list below is filed as part of this Report.

             (3) Exhibits filed herewith or incorporated herein by reference
                 are set forth in Item 14(c) below.

             List of Financial Statements and Schedules Referenced in this
             -------------------------------------------------------------
             Item 14
             -------

             Information incorporated by reference from Exhibit 13 filed
             herewith:

                 Consolidated Statement of Income
                 Consolidated Balance Sheet
                 Consolidated Statement of Cash Flows
                 Consolidated Statement of Shareholders' Investment
                 Notes to Consolidated Financial Statements
                 Report of Independent Public Accountants

             Financial Statement Schedules filed herewith:

                 Schedule II: Valuation and Qualifying Accounts

             All other schedules are omitted because they are not applicable
             or not required, or because the required information is shown
             either in the financial statements or in the notes thereto.

         (b)Reports on Form 8-K
            -------------------

            None.

         (c)Exhibits
            --------

            See Exhibit Index on the page immediately preceding exhibits.




                                       10PAGE
<PAGE>
                                   SIGNATURES

        Pursuant to the requirements of Section 13 or 15(d) of the Securities
    Exchange Act of 1934, the Registrant has duly caused this report to be
    signed on its behalf by the undersigned, thereunto duly authorized.

    Date: March 16, 1998               THERMO VOLTEK CORP.



                                       By: John W. Wood Jr.
                                           -----------------------
                                           John W. Wood Jr.
                                           Chief Executive Officer

        Pursuant to the requirements of the Securities Exchange Act of 1934,
    this report has been signed below by the following persons on behalf of
    the Registrant and in the capacities indicated below, as of March 16,
    1998.

    Signature                          Title
    ---------                          -----


    By: John W. Wood Jr.           Chairman of the Board, Chief Executive
        -------------------------       Officer, and Director
        John W. Wood Jr.         

    By: John N. Hatsopoulos        Chief Financial Officer and Senior
        -------------------------       Vice President
        John N. Hatsopoulos       

    By: Paul F. Kelleher           Chief Accounting Officer
        -------------------------
        Paul F. Kelleher

    By  Elias P. Gyftopoulos       Director
        -------------------------
        Elias P. Gyftopoulos

    By: William W. Hoover          Director
        -------------------------
        William W. Hoover

    By: Sandra L. Lambert          Director
        -------------------------
        Sandra L. Lambert

    By: Theo Melas-Kyriazi         Director
        -------------------------
        Theo Melas-Kyriazi

    By: Peter Richman              Director
        -------------------------
        Peter Richman

                                       11PAGE
<PAGE>
                    Report of Independent Public Accountants

    To the Shareholders and Board of Directors of Thermo Voltek Corp.:

        We have audited, in accordance with generally accepted auditing
    standards, the consolidated financial statements included in Thermo
    Voltek Corp.'s Annual Report to Shareholders incorporated by reference in
    this Form 10-K, and have issued our report thereon dated February 12,
    1998. Our audits were made for the purpose of forming an opinion on those
    statements taken as a whole. The schedule listed in Item 14 on page 10 is
    the responsibility of the Company's management and is presented for
    purposes of complying with the Securities and Exchange Commission's rules
    and is not part of the basic consolidated financial statements. This
    schedule has been subjected to the auditing procedures applied in the
    audits of the basic consolidated financial statements and, in our
    opinion, fairly states in all material respects the consolidated
    financial data required to be set forth therein in relation to the basic
    consolidated financial statements taken as a whole.



                                            Arthur Andersen LLP



    Boston, Massachusetts
    February 12, 1998










                                       12PAGE
<PAGE>
   SCHEDULE II

                               THERMO VOLTEK CORP.
                        Valuation and Qualifying Accounts
                                 (In thousands)


                         Balance  Provision
                              at    Charged   Accounts                Balance
                       Beginning         to    Written                 at End
   Description           of Year    Expense        Off      Other (a) of Year
   ---------------------------------------------------------------------------
   Allowance for
     Doubtful Accounts

   Year Ended
     January 3, 1998        $587       $326      $(90)       $(24)       $799

   Year Ended
     December 28, 1996      $446       $103      $(11)       $ 49        $587

   Year Ended
     December 30, 1995      $343       $135      $(51)       $ 19        $446

   (a)Allowances of businesses acquired during the year as described in Note
      3 to Consolidated Financial Statements in the Registrant's 1997 Annual
      Report to Shareholders and the effect of foreign currency translation.





                                       13PAGE
<PAGE>
                                  EXHIBIT INDEX

    Exhibit
    Number       Description of Exhibit
    ------------------------------------------------------------------------
      2.1        Asset Purchase Agreement dated March 1, 1995, among KeyTek
                 Instrument Division of Thermo Voltek Corp., Kalmus
                 Engineering Incorporated, RF Power Labs, Incorporated, and
                 Frank Kalmus (filed as Exhibit 2.4 to the Registrant's
                 Annual Report on Form 10-K for the year ended December 31,
                 1994 [File No. 1-10574] and incorporated herein by
                 reference). Pursuant to Item 601(b)(2) of Regulation S-K,
                 schedules to this Agreement have been omitted. The Company
                 hereby undertakes to furnish supplementally a copy of such
                 schedules to the Commission upon request.

      2.2        Asset Purchase Agreement dated as of July 3, 1996,
                 between the Registrant and Pacific Power Source
                 Corporation (filed as Exhibit 2.1 to the Registrant's
                 Quarterly Report on Form 10-Q for the quarter ended
                 June 29, 1996 [File No. 1-10574] and incorporated
                 herein by reference). Pursuant to Item 601(b)(2) of
                 Regulation S-K, schedules to this Agreement have been
                 omitted. The Company hereby undertakes to furnish
                 supplementally a copy of such schedules to the
                 Commission upon request.

      3.1        Restated Certificate of Incorporation of the
                 Registrant, as amended (filed as Exhibit 3.1 to the
                 Registrant's Annual Report on Form 10-K for the year
                 ended January 2, 1993 [File No. 1-10574] and
                 incorporated herein by reference).

      3.2        Composite Restatement of By-Laws, as amended (filed as
                 Exhibit 3.2 to the Registrant's Transition Report on
                 Form 10-K for the six months ended December 29, 1990
                 [File No. 1-10574] and incorporated herein by
                 reference).

      4.1        Agreement between the Registrant and Thermedics dated
                 June 5, 1992, for Purchase of Note (filed as Exhibit 4
                 to the Registrant's Current Report on Form 8-K dated
                 June 5, 1992 [File No. 1-10574] and incorporated
                 herein by reference).

      4.2        Fiscal Agency Agreement dated as of November 19, 1993,
                 among the Registrant, Thermo Electron, and Chemical
                 Bank (filed as Exhibit 4.3 to the Registrant's Annual
                 Report on Form 10-K for the fiscal year ended January
                 1, 1994 [File No. 1-10574] and incorporated herein by
                 reference).


                                       14PAGE
<PAGE>
                                  EXHIBIT INDEX

    Exhibit
    Number        Description of Exhibit
    ------------------------------------------------------------------------
      4.3         Guarantee Reimbursement Agreement dated February 7, 1994,
                  among the Registrant, Thermedics, Thermo Cardiosystems
                  Inc., and Thermo Electron (filed as Exhibit 4.4 to
                  Thermedics' Annual Report on Form 10-K for the fiscal year
                  ended January 1, 1994 [File No. 1-9567] and incorporated
                  herein by reference).

     10.1         Amended and Restated Corporate Services Agreement dated
                  January 3, 1993, between Thermo Electron and the Registrant
                  (filed as Exhibit 10.3 to the Registrant's Annual Report on
                  Form 10-K for the year ended January 2, 1993 [File No.
                  1-10574] and incorporated herein by reference).

     10.2         Form of Indemnification Agreement for Directors and
                  Officers of the Registrant (filed as Exhibit 10.13 to the
                  Registrant's Transition Report on Form 10-K for the six
                  months ended December 29, 1990 [File No. 1-10574] and
                  incorporated herein by reference).

     10.3         Thermo Electron Corporate Charter as amended and restated
                  effective January 3, 1993 (filed as Exhibit 10.5 to the
                  Registrant's Annual Report on Form 10-K for the year ended
                  January 2, 1993 [File No. 1-10574] and incorporated herein
                  by reference).

     10.4         Consulting Agreement between the Registrant and Peter
                  Richman, as of August 5, 1993 (filed as Exhibit 10.25 to
                  the Registrant's Quarterly Report on Form 10-Q for the
                  quarter ended July 3, 1993 [File No. 1-10574] and
                  incorporated herein by reference).

     10.5         Lease Agreement dated August 2, 1993, between Comtest
                  Invest B.V. and Comtest Instrumentation B.V. (filed as
                  Exhibit 10.6 to the Registrant's Annual Report on Form 10-K
                  for the fiscal year ended January 1, 1994 [File No.
                  1-10574] and incorporated herein by reference).

     10.6         Note dated July 2, 1993, from the Registrant to Thermo
                  Electron Corporation (filed as Exhibit 10.7 to the
                  Registrant's Annual Report on Form 10-K for the fiscal year
                  ended January 1, 1994 [File No. 1-10574] and incorporated
                  herein by reference).

     10.7         Amended and Restated Master Repurchase Agreement dated as
                  of July 2, 1996, between the Registrant and Thermo Electron
                  (filed as Exhibit 10.7 to the Registrant's Annual Report on
                  Form 10-K for the fiscal year ended December 28, 1996 [File
                  No. 1-10574] and incorporated herein by reference).

    10.8 - 10.18  Reserved.

                                       15PAGE
<PAGE>
                                  EXHIBIT INDEX

    Exhibit
    Number        Description of Exhibit
    ------------------------------------------------------------------------
    10.19         1985 Stock Option Plan of the Registrant (filed as Exhibit
                  10.14 to the Registrant's Annual Report on Form 10-K for
                  the fiscal year ended June 30, 1985 [File No. 0-8245] and
                  incorporated herein by reference). (Maximum number of
                  shares issuable is 300,000 shares, after adjustment to
                  reflect 1-for-3 reverse stock split effected in November
                  1992 and 3-for-2 stock splits effected in November 1993 and
                  August 1996.)

    10.20         1990 Stock Option Plan, as amended, of the Registrant
                  (filed as Exhibit 10.2 to the Registrant's Quarterly Report
                  on Form 10-Q for the quarter ended July 2, 1994 [File No.
                  1-10574] and incorporated herein by reference). (Maximum
                  number of shares issuable is 600,000 shares, after
                  adjustment to reflect share increases in 1993 and 1994,
                  1-for-3 reverse stock split effected in November 1992, and
                  3-for-2 stock splits effected in November 1993 and August
                  1996.)

    10.21         Equity Incentive Plan of the Registrant (filed as Exhibit
                  10.21 to the Registrant's Annual Report on Form 10-K for
                  the year ended December 31, 1994 [File No. 1-10574] and
                  incorporated herein by reference).

                  In addition to the stock-based compensation plans of the
                  Registrant, the executive officers of the Registrant may be
                  granted awards under stock-based compensation plans of
                  Thermo Electron and Thermedics for services rendered to the
                  Registrant or such affiliated corporations. The terms of
                  such plans are substantially the same as those of the
                  Registrant's Equity Incentive Plan.

    10.22         Deferred Compensation Plan for Directors of the Registrant
                  (filed as Exhibit 10.23 to the Registrant's Quarterly
                  Report on Form 10-Q for the quarter ended July 3, 1993
                  [File No. 1-10574] and incorporated herein by reference).

    10.23         Directors' Stock Option Plan of the Registrant (filed as
                  Exhibit 10.23 to the Registrant's Annual Report on Form
                  10-K for the year ended December 31, 1994 [File No.
                  1-10574] and incorporated herein by reference). 



                                       16PAGE
<PAGE>
                                  EXHIBIT INDEX

    Exhibit
    Number        Description of Exhibit
    ------------------------------------------------------------------------
     10.24        Restated Stock Holdings Assistance Plan and Form of
                  Promissory Note.

      10.25       Amended and Restated Master Guarantee Reimbursement and
                  Loan Agreement dated December 18, 1997, between the Company
                  and Thermo Electron.

      10.26       Amended and Restated Master Guarantee Reimbursement and
                  Loan Agreement dated December 18, 1997, between the Company
                  and Thermedics.

     13           Annual Report to Shareholders for the year ended January 3,
                  1998 (only those portions incorporated herein by
                  reference).

     21           Subsidiaries of the Registrant.

     23           Consent of Arthur Andersen LLP.

     27.1         Financial Data Schedule for the year ended January 3, 1998.

     27.2         Financial Data Schedule for the quarter ended March 30,
                   1996 (restated for the adoption of SFAS No. 128).
 


                                                EXHIBIT 10.24

                               THERMO VOLTEK CORP.

                     RESTATED STOCK HOLDING ASSISTANCE PLAN

        SECTION 1.   Purpose.

             The purpose of this Plan is to benefit Thermo Voltek Corp.
        (the "Company") and its stockholders by encouraging Key Employees
        to acquire and maintain share ownership in the Company, by
        increasing such employees' proprietary interest in promoting the
        growth and performance of the Company and its subsidiaries and by
        providing for the implementation of the Stock Holding Policy.  

        SECTION 2.     Definitions.

             The following terms, when used in the Plan, shall have the
        meanings set forth below:

             Committee:   The Human Resources Committee of the Board of
        Directors of the Company as appointed from time to time.

             Common Stock:   The common stock of the Company and any
        successor thereto.

             Company:   Thermo Voltek Corp., a Delaware corporation.

             Stock Holding Policy:   The Stock Holding Policy of the
        Company, as adopted by the Committee and as in effect from time
        to time.

             Key Employee:   Any employee of the Company or any of its
        subsidiaries, including any officer or member of the Board of
        Directors who is also an employee, as designated by the
        Committee, and who, in the judgment of the Committee, will be in
        a position to contribute significantly to the attainment of the
        Company's strategic goals and long-term growth and prosperity.

             Loans:   Loans extended to Key Employees by the Company
        pursuant to this Plan.

             Plan:   The Thermo Voltek Corp. Stock Holding Assistance
        Plan, as amended from time to time.

        SECTION 3.     Administration.

             The Plan and the Stock Holding Policy shall be administered
        by the Committee, which shall have authority to interpret the
        Plan and the Stock Holding Policy and, subject to their
        provisions, to prescribe, amend and rescind any rules and
        regulations and to make all other determinations necessary or
        desirable for the administration thereof.  The Committee's
        interpretations and decisions with regard to the Plan and the
        Stock Holding Policy and such rules and regulations as may be
PAGE
<PAGE>
        established thereunder shall be final and conclusive.  The
        Committee may correct any defect or supply any omission or
        reconcile any inconsistency in the Plan or the Stock Holding
        Policy, or in any Loan in the manner and to the extent the
        Committee deems desirable to carry it into effect.  No member of
        the Committee shall be liable for any action or omission in
        connection with the Plan or the Stock Holding Policy that is made
        in good faith.

        SECTION 4.     Loans and Loan Limits.

             The Committee has determined that the provision of Loans
        from time to time to Key Employees in such amounts as to cause
        such Key Employees to comply with the Stock Holding Policy is, in
        the judgment of the Committee, reasonably expected to benefit the
        Company and authorizes the Company to extend Loans from time to
        time to Key Employees in such amounts as may be requested by such
        Key Employees in order to comply with the Stock Holding Policy.
        Such Loans may be used solely for the purpose of acquiring Common
        Stock (other than upon the exercise of stock options or under
        employee stock purchase plans) in open market transactions or
        from the Company.

             Each Loan shall be full recourse and evidenced by a
        non-interest bearing promissory note substantially in the form
        attached hereto as Exhibit A (the "Note") and maturing in
        accordance with the provisions of Section 6 hereof, and
        containing such other terms and conditions, which are not
        inconsistent with the provisions of the Plan and the Stock
        Holding Policy, as the Committee shall determine in its sole and
        absolute discretion.

        SECTION 5.     Federal Income Tax Treatment of Loans.

             For federal income tax purposes, interest on Loans shall be
        imputed on any interest free Loan extended under the Plan.  A Key
        Employee shall be deemed to have paid the imputed interest to the
        Company and the Company shall be deemed to have paid said imputed
        interest back to the Key Employee as additional compensation.
        The deemed interest payment shall be taxable to the Company as
        income, and may be deductible to the Key Employee to the extent
        allowable under the rules relating to investment interest.  The
        deemed compensation payment to the Key Employee shall be taxable
        to the employee and deductible to the Company, but shall also be
        subject to employment taxes such as FICA and FUTA.

        SECTION 6.     Maturity of Loans.

             Each Loan to a Key Employee hereunder shall be due and
        payable on demand by the Company.  If no such demand is made,
        then each Loan shall mature and the principal thereof shall
        become due and payable on the fifth anniversary of the date of
        the Loan, provided that the Committee may, in its sole and
        absolute discretion, authorize such other maturity and repayment
PAGE
<PAGE>
        schedule as the Committee may determine.  Each Loan shall also
        become immediately due and payable in full, without demand, upon
         the occurrence of any of the events set forth in the Note;
        provided that the Committee may, in its sole and absolute
        discretion, authorize an extension of the time for repayment of a
        Loan upon such terms and conditions as the Committee may
        determine.

        SECTION 7.     Amendment and Termination of the Plan.

             The Committee may from time to time alter or amend the Plan
        or the Stock Holding Policy in any respect, or terminate the Plan
        or the Stock Holding Policy at any time.  No such amendment or
        termination, however, shall alter or otherwise affect the terms
        and conditions of any Loan then outstanding to Key Employee
        without such Key Employee's written consent, except as otherwise
        provided herein or in the promissory note evidencing such Loan.

        SECTION 8.     Miscellaneous Provisions.

             (a)  No employee or other person shall have any claim or
        right to receive a Loan under the Plan, and no employee shall
        have any right to be retained in the employ of the Company due to
        his or her participation in the Plan.

             (b)  No Loan shall be made hereunder unless counsel for the
        Company shall be satisfied that such Loan will be in compliance
        with applicable federal, state and local laws.

             (c)  The expenses of the Plan shall be borne by the Company.

             (d)  The Plan shall be unfunded, and the Company shall not
        be required to establish any special or separate fund or to make
        any other segregation of assets to assure the making of any Loan
        under the Plan.

             (e)  Except as otherwise provided in Section 7 hereof, by
        accepting any Loan under the Plan, each Key Employee shall be
        conclusively deemed to have indicated his acceptance and
        ratification of, and consent to, any action taken under the Plan
        or the Stock Holding Policy by the Company, the Board of
        Directors of the Company or the Committee.

             (f)  The appropriate officers of the Company shall cause to
        be filed any reports, returns or other information regarding
        Loans hereunder, as may be required by any applicable statute,
        rule or regulation.

        SECTION 9.     Effective Date.

             The Plan and the Stock Holding Policy shall become effective
        upon approval and adoption by the Committee.
PAGE
<PAGE>
                               EXHIBIT A TO STOCK HOLDING ASSISTANCE PLAN


                               THERMO VOLTEK CORP.

                                 Promissory Note



        $_________                                                       
                                                Dated:____________


             For value  received, ________________,  an individual  whose
        residence is located at _______________________ (the "Employee"),
        hereby promises to pay to Thermo Voltek Corp. (the "Company"), or
        assigns, ON DEMAND,  but in any  case on or  before [insert  date
        which  is  the  fifth  anniversary  of  date  of  issuance]  (the
        "Maturity Date"), the  principal sum  of [loan  amount in  words]
        ($_______), or such part thereof as then remains unpaid,  without
        interest.   Principal shall  be payable  in lawful  money of  the
        United States of America, in immediately available funds, at  the
        principal office of  the Company or  at such other  place as  the
        Company may  designate  from  time  to time  in  writing  to  the
        Employee. 

             Unless the Company has already made a demand for payment  in
        full of this Note,  the Employee agrees to  repay to the  Company
        from the Employee's annual cash incentive compensation  (referred
        to as  bonus), beginning  with the  first such  bonus payment  to
        occur after the date of  this Note and on  each of the next  four
        bonus payment dates  occurring prior to  the Maturity Date,  such
        amount as may be designated by the Company. Any amount  remaining
        unpaid under this Note shall be  due and payable on the  Maturity
        Date.

             This Note may be prepaid at  any time or from time to  time,
        in whole  or  in part,  without  any  premium or  penalty.    The
        Employee acknowledges and agrees that the Company has advanced to
        the Employee the principal  amount of this  Note pursuant to  the
        Company's Stock Holding Assistance Plan,  and that all terms  and
        conditions of such Plan are incorporated herein by reference.  

             The unpaid principal amount of this Note shall be and become
        immediately due  and payable  without notice  or demand,  at  the
        option of  the  Company,  upon  the  occurrence  of  any  of  the
        following events:

                  (a)  the termination of the Employee's employment  with
             the Company, with or without cause, for any reason or for no
             reason;

                  (b)  the death or disability of the Employee;
PAGE
<PAGE>
                  (c)  the failure  of the  Employee to  pay his  or  her
             debts as they  become due, the  insolvency of the  Employee,
             the filing by or against the Employee of any petition  under
             the United  States Bankruptcy  Code (or  the filing  of  any
             similar  petition   under   the  insolvency   law   of   any
             jurisdiction),  or  the  making   by  the  Employee  of   an
             assignment or trust mortgage for the benefit of creditors or
             the appointment of  a receiver, custodian  or similar  agent
             with respect  to,  or  the  taking by  any  such  person  of
             possession of, any property of the Employee; or

                  (d)  the issuance of any writ of attachment, by trustee
             process or otherwise, or any restraining order or injunction
             not removed, repealed or  dismissed within thirty (30)  days
             of issuance, against or affecting the person or property  of
             the Employee or any liability or obligation of the  Employee
             to the Company.

             In case any payment  herein provided for  shall not be  paid
        when due,  the Employee  further  promises to  pay all  costs  of
        collection, including all reasonable attorneys' fees.

             No  delay  or  omission  on  the  part  of  the  Company  in
        exercising any right hereunder shall operate as a waiver of  such
        right or of any other right of the Company, nor shall any  delay,
        omission or waiver  on any  one occasion be  deemed a  bar to  or
        waiver of the  same or any  other right on  any future  occasion.
        The  Employee  hereby  waives  presentment,  demand,  notice   of
        prepayment,  protest  and  all  other  demands  and  notices   in
        connection with the delivery, acceptance, performance, default or
        enforcement of this Note.  The undersigned hereby assents to  any
        indulgence  and  any  extension  of  time  for  payment  of   any
        indebtedness  evidenced  hereby  granted  or  permitted  by   the
        Company.  

             This Note  has been  made pursuant  to the  Company's  Stock
        Holding Assistance Plan and shall be governed by and construed in
        accordance with, such Plan and the laws of the State of  Delaware
        and shall have the effect of a sealed instrument.


                                      _______________________________

                                      Employee Name: _________________


        ________________________
        Witness



                                                EXHIBIT 10.25

              AMENDED AND RESTATED MASTER GUARANTEE REIMBURSEMENT
                               AND LOAN AGREEMENT


             This AGREEMENT is entered into as of the 18th day of
        December, 1997 by and among Thermo Electron Corporation (the
        "Parent") and those of its subsidiaries that join in this
        Agreement by executing the signature page hereto (the "Majority
        Owned Subsidiaries").

                                   WITNESSETH:

             WHEREAS, the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries wish to enter into various financial
        transactions, such as convertible or nonconvertible debt, loans,
        and equity offerings, and other contractual arrangements with
        third parties (the "Underlying Obligations") and may provide
        credit support to, on behalf of or for the benefit of, other
        subsidiaries of the Parent ("Credit Support Obligations"); 

             WHEREAS, the Majority Owned Subsidiaries and the Parent
        acknowledge that the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries may be unable to enter into many kinds
        of Underlying Obligations without a guarantee of their
        performance thereunder from the Parent (a "Parent Guarantee") or
        without obtaining Credit Support Obligations from other Majority
        Owned Subsidiaries;

             WHEREAS, the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries may borrow funds from the Parent, and
        the Parent may loan funds or provide credit to the Majority Owned
        Subsidiaries and their wholly-owned subsidiaries, on a short-term
        and unsecured basis;

             WHEREAS, certain Majority Owned Subsidiaries ("Second Tier
        Majority Owned Subsidiaries ") may themselves be majority owned
        subsidiaries of other Majority Owned Subsidiaries ("First Tier
        Majority Owned Subsidiaries");

             WHEREAS, for various reasons, Parent Guarantees of a Second
        Tier Majority Owned Subsidiary's Underlying Obligations may be
        demanded and given without the respective First Tier Majority
        Owned Subsidiary also issuing a guarantee of such Underlying
        Obligation; 

             WHEREAS, the Parent may itself make a loan or provide other
        credit to a Second Tier Majority Owned Subsidiary or its
        wholly-owned subsidiaries under circumstances where the
        applicable First Tier Majority Owned Subsidiary does not provide
        such credit; and

             WHEREAS, the Parent is willing to consider continuing to
        issue Parent Guarantees and providing credit, and the Majority
        Owned Subsidiaries are willing to consider continuing to provide
PAGE
<PAGE>
        Credit Support Obligations and to borrow funds, on the terms and
        conditions set forth below;

             NOW, THEREFORE, in consideration of the foregoing and other
        good and valuable consideration, the receipt and sufficiency of
        which are hereby acknowledged by each party hereto, the parties
        agree as follows:

        1.   If the Parent provides a Parent Guarantee of an Underlying
             Obligation, and the beneficiary(ies) of the Parent Guarantee
             enforce the Parent Guarantee, or the Parent performs under
             the Parent Guarantee for any other reason, then the Majority
             Owned Subsidiary that is obligated, either directly or
             indirectly through a wholly-owned subsidiary, under such
             Underlying Obligation shall indemnify and save harmless the
             Parent from any liability, cost, expense or damage
             (including reasonable attorneys' fees) suffered by the
             Parent as a result of the Parent Guarantee.  If the
             Underlying Obligation is issued by a Second Tier Majority
             Owned Subsidiary or a wholly-owned subsidiary thereof, and
             such Second Tier Majority Owned Subsidiary is unable to
             fully indemnify the Parent (because of the poor financial
             condition of such Second Tier Majority Owned Subsidiary, or
             for any other reason), then the First Tier Majority Owned
             Subsidiary that owns the majority of the stock of such
             Second Tier Majority Owned Subsidiary shall indemnify and
             save harmless the Parent from any remaining liability, cost,
             expense or damage (including reasonable attorneys' fees)
             suffered by the Parent as a result of the Parent Guarantee.
             If a Majority Owned Subsidiary or a wholly-owned subsidiary
             thereof provides a Credit Support Obligation for any
             subsidiary of the Parent, other than a subsidiary of such
             Majority Owned Subsidiary, and the beneficiary(ies) of the
             Credit Support Obligation enforce the Credit Support
             Obligation, or the Majority Owned Subsidiary or its
             wholly-owned subsidiary  performs under the Credit Support
             Obligation for any other reason, then the Parent shall
             indemnify and save harmless the Majority Owned Subsidiary or
             its wholly-owned subsidiary, as applicable, from any
             liability, cost, expense or damage (including reasonable
             attorneys' fees) suffered by the Majority Owned Subsidiary
             or its wholly-owned subsidiary, as applicable, as a result
             of the Credit Support Obligation.  Without limiting the
             foregoing, Credit Support Obligations include the deposit of
             funds by a Majority Owned Subsidiary or a wholly-owned
             subsidiary thereof in a credit arrangement with a banking
             facility whereby such funds are available to the banking
             facility as collateral for overdraft obligations of other
             Majority Owned Subsidiaries or their subsidiaries also
             participating in the credit arrangement with such banking
             facility.

        2.   For purposes of this Agreement, the term "guarantee" shall
             include not only a formal guarantee of an obligation, but
PAGE
<PAGE>
             also any other arrangement where the Parent is liable for
             the obligations of a Majority Owned Subsidiary or its
             wholly-owned subsidiaries.  Such other arrangements include
             (a) representations, warranties and/or covenants or other
             obligations joined in by the Parent, whether on a joint or
             joint and several basis, for the benefit of the Majority
             Owned Subsidiary or its wholly-owned subsidiaries and (b)
             responsibility of the Parent by operation of law for the
             acts and omissions of the Majority Owned Subsidiary or its
             wholly-owned subsidiaries, including controlling person
             liability under securities and other laws.

        3.   Promptly after the Parent receives notice that a beneficiary
             of a Parent Guarantee is seeking to enforce such Parent
             Guarantee, the Parent shall notify the Majority Owned
             Subsidiary(s) obligated, either directly or indirectly
             through a wholly-owned subsidiary, under the relevant
             Underlying Obligation.  Such Majority Owned Subsidiary(s) or
             wholly-owned subsidiary thereof, as applicable, shall have
             the right, at its own expense, to contest the claim of such
             beneficiary.  If a Majority Owned Subsidiary or wholly-owned
             subsidiary thereof, as applicable, is contesting the claim
             of such beneficiary, the Parent will not perform under the
             relevant Parent Guarantee unless and until, in the Parent's
             reasonable judgment, the Parent is obligated under the terms
             of such Parent Guarantee to perform.  Subject to the
             foregoing, any dispute between a Majority Owned Subsidiary
             or wholly-owned subsidiary thereof, as applicable, and a
             beneficiary of a Parent Guarantee shall not affect such
             Majority Owned Subsidiary's obligation to promptly indemnify
             the Parent hereunder.  Promptly after a Majority Owned
             Subsidiary or wholly-owned subsidiary thereof, as
             applicable, receives notice that a beneficiary of a Credit
             Support Obligation is seeking to enforce such Credit Support
             Obligation, the Majority Owned Subsidiary shall notify the
             Parent.  The Parent shall have the right, at its own
             expense, to contest the claim of such beneficiary.  If the
             Parent or the subsidiary of the Parent on whose behalf the
             Credit Support Obligation is given is contesting the claim
             of such beneficiary, the Majority Owned Subsidiary or
             wholly-owned subsidiary thereof, as applicable, will not
             perform under the relevant Credit Support Obligation unless
             and until, in the Majority Owned Subsidiary's reasonable
             judgment, the Majority Owned Subsidiary or wholly-owned
             subsidiary thereof, as applicable, is obligated under the
             terms of such Credit Support Obligation to perform.  Subject
             to the foregoing, any dispute between the Parent or the
             subsidiary of the Parent on whose behalf the Credit Support
             Obligation was given, on the one hand, and a beneficiary of
             a Credit Support Obligation, on the other, shall not affect
             the Parent's obligation to promptly indemnify the Majority
             Owned Subsidiary or its wholly-owned subsidiary, as
             applicable, hereunder.
PAGE
<PAGE>
        4.   Upon the request of a Majority Owned Subsidiary, the Parent
             may make loans and advances to the Majority Owned Subsidiary
             or its wholly-owned subsidiaries on a short-term, revolving
             credit basis, from time to time in such amounts as mutually
             determined by the Parent and the Majority Owned Subsidiary.
             The aggregate principal amount of such loans and advances
             shall be reflected on the books and records of the Majority
             Owned Subsidiary (or wholly-owned subsidiary, as applicable)
             and the Parent.  All such loans and advances shall be on an
             unsecured basis unless specifically provided otherwise in
             loan documents executed at that time.  The Majority Owned
             Subsidiary or its wholly-owned subsidiaries, as applicable,
             shall pay interest on the aggregate unpaid principal amount
             of such loans from time to time outstanding at a rate
             ("Interest Rate") equal to the rate of the Commercial Paper
             Composite Rate for 90-day maturities as reported by Merrill
             Lynch Capital Markets, as an average of the last five
             business days of such Majority Owned Subsidiary's latest
             fiscal quarter then ended, plus twenty-five (25) basis
             points.  The Interest Rate shall be adjusted on the first
             business day of each fiscal quarter of such Majority Owned
             Subsidiary pursuant to the Interest Rate formula contained
             in the preceding sentence and shall be in effect for the
             entirety of such fiscal quarter.  Interest shall be computed
             on a 360-day basis.  The aggregate principal amount
             outstanding and accrued interest thereon shall be payable on
             demand.  The principal and accrued interest may be paid by
             the Majority Owned Subsidiaries or their wholly-owned
             subsidiaries, as applicable, at any time or from time to
             time, in whole or in part, without premium or penalty.  All
             payments shall be applied first to accrued interest and then
             to principal.  Principal and interest shall be payable in
             lawful money of the United States of America, in immediately
             available funds, at the principal office of the Parent or at
             such other place as the Parent may designate from time to
             time in writing to the Majority Owned Subsidiary.  The
             unpaid principal amount of any such borrowings, and accrued
             interest thereon, shall become immediately due and payable,
             without demand, upon the failure of the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, to
             pay its debts as they become due, the insolvency of the
             Majority Owned Subsidiary or its wholly-owned subsidiary, as
             applicable, the filing by or against the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, of
             any petition under the U.S. Bankruptcy Code (or the filing
             of any similar petition under the insolvency law of any
             jurisdiction), or the making by the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, of
             an assignment or trust mortgage for the benefit of creditors
             or the appointment of a receiver, custodian or similar agent
             with respect to, or the taking by any such person of
             possession of, any property of the Majority Owned Subsidiary
             or its wholly-owned subsidiary, as applicable.  In case any
             payments of principal and interest shall not be paid when
PAGE
<PAGE>
             due, the Majority Owned Subsidiary or its wholly-owned
             subsidiary, as applicable, further promises to pay all cost
             of collection, including reasonable attorneys' fees.   

        5.   If the Parent makes a loan or provides other credit ("Credit
             Extension") to a Second Tier Majority Owned Subsidiary, the
             First Tier Majority Owned Subsidiary that owns the majority
             of the stock of such Second Tier Majority Owned Subsidiary
             hereby guarantees the Second Tier Majority Owned
             Subsidiary's obligations to the Parent thereunder.  Such
             guaranty shall be enforced only after the Parent, in its
             reasonable judgment, determines that the Second Tier
             Majority Owned Subsidiary is unable to fully perform its
             obligations under the Credit Extension.  If the Parent
             provides Credit Extension to a wholly-owned subsidiary of a
             Second Tier Majority Owned Subsidiary, the Second Tier
             Majority Owned Subsidiary hereby guarantees it wholly-owned
             subsidiary's obligations to the Parent thereunder and the
             First Tier Majority Owned Subsidiary that owns the majority
             of the stock of such Second Tier Majority Owned Subsidiary
             hereby guarantees the Second Tier Majority Owned
             Subsidiary's obligations to the Parent hereunder.  Such
             guaranty by the First Tier Majority Owned Subsidiary shall
             be enforced only after the Parent, in its reasonable
             judgment, determines that the Second Tier Majority Owned
             Subsidiary is unable to fully perform its guaranty
             obligation hereunder.  

        6.   All payments required to be made by a Majority Owned
             Subsidiary or its wholly-owned subsidiaries, as applicable,
             shall be made within two days after receipt of notice from
             the Parent. All payments required to be made by the Parent
             shall be made within two days after receipt of notice from
             the Majority Owned Subsidiary.  

        7.   This Agreement shall be governed by and construed in
             accordance with the laws of the Commonwealth of
             Massachusetts applicable to contracts made and performed
             therein.
PAGE
<PAGE>
             IN WITNESS WHEREOF, the parties have caused this Agreement
        to be executed by their duly authorized officers as of the date
        first above written.


                                      THERMO ELECTRON CORPORATION


                                      By:  _____________________________
                                           Melissa F.Riordan
                                      Title:    Treasurer


                                      THERMO VOLTEK CORP. 


                                      By:  _____________________________
                                           John W.Wood Jr.
                                      Title:    Chief Executive Officer





                                                EXHIBIT 10.26

              AMENDED AND RESTATED MASTER GUARANTEE REIMBURSEMENT
                               AND LOAN AGREEMENT


             This AGREEMENT is entered into as of the 18th day of
        December, 1997 by and among Thermedics Inc. (the "Parent") and
        those of its subsidiaries that join in this Agreement by
        executing the signature page hereto (the "Majority Owned
        Subsidiaries").

                                   WITNESSETH:

             WHEREAS, the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries wish to enter into various financial
        transactions, such as convertible or nonconvertible debt, loans,
        and equity offerings, and other contractual arrangements with
        third parties (the "Underlying Obligations") and may provide
        credit support to, on behalf of or for the benefit of, other
        subsidiaries of the Parent ("Credit Support Obligations"); 

             WHEREAS, the Majority Owned Subsidiaries and the Parent
        acknowledge that the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries may be unable to enter into many kinds
        of Underlying Obligations without a guarantee of their
        performance thereunder from the Parent (a "Parent Guarantee") or
        without obtaining Credit Support Obligations from other Majority
        Owned Subsidiaries;

             WHEREAS, the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries may borrow funds from the Parent, and
        the Parent may loan funds or provide credit to the Majority Owned
        Subsidiaries and their wholly-owned subsidiaries, on a short-term
        and unsecured basis; and

             WHEREAS, the Parent is willing to consider continuing to
        issue Parent Guarantees and providing credit, and the Majority
        Owned Subsidiaries are willing to consider continuing to provide
        Credit Support Obligations and to borrow funds, on the terms and
        conditions set forth below;

             NOW, THEREFORE, in consideration of the foregoing and other
        good and valuable consideration, the receipt and sufficiency of
        which are hereby acknowledged by each party hereto, the parties
        agree as follows:

        1.   If the Parent provides a Parent Guarantee of an Underlying
             Obligation, and the beneficiary(ies) of the Parent Guarantee
             enforce the Parent Guarantee, or the Parent performs under
             the Parent Guarantee for any other reason, then the Majority
             Owned Subsidiary that is obligated, either directly or
             indirectly through a wholly-owned subsidiary, under such
             Underlying Obligation shall indemnify and save harmless the
             Parent from any liability, cost, expense or damage
             (including reasonable attorneys' fees) suffered by the
PAGE
<PAGE>
             Parent as a result of the Parent Guarantee.  If a Majority
             Owned Subsidiary or a wholly-owned subsidiary thereof
             provides a Credit Support Obligation for any subsidiary of
             the Parent, other than a subsidiary of such Majority Owned
             Subsidiary, and the beneficiary(ies) of the Credit Support
             Obligation enforce the Credit Support Obligation, or the
             Majority Owned Subsidiary or its wholly-owned subsidiary  
             performs under the Credit Support Obligation for any other
             reason, then the Parent shall indemnify and save harmless
             the Majority Owned Subsidiary or its wholly-owned
             subsidiary, as applicable, from any liability, cost, expense
             or damage (including reasonable attorneys' fees) suffered by
             the Majority Owned Subsidiary or its wholly-owned
             subsidiary, as applicable, as a result of the Credit Support
             Obligation.  Without limiting the foregoing, Credit Support
             Obligations include the deposit of funds by a Majority Owned
             Subsidiary or a wholly-owned subsidiary thereof in a credit
             arrangement with a banking facility whereby such funds are
             available to the banking facility as collateral for
             overdraft obligations of other Majority Owned Subsidiaries
             or their subsidiaries also participating in the credit
             arrangement with such banking facility.

        2.   For purposes of this Agreement, the term "guarantee" shall
             include not only a formal guarantee of an obligation, but
             also any other arrangement where the Parent is liable for
             the obligations of a Majority Owned Subsidiary or its
             wholly-owned subsidiaries.  Such other arrangements include
             (a) representations, warranties and/or covenants or other
             obligations joined in by the Parent, whether on a joint or
             joint and several basis, for the benefit of the Majority
             Owned Subsidiary or its wholly-owned subsidiaries and (b)
             responsibility of the Parent by operation of law for the
             acts and omissions of the Majority Owned Subsidiary or its
             wholly-owned subsidiaries, including controlling person
             liability under securities and other laws.

        3.   Promptly after the Parent receives notice that a beneficiary
             of a Parent Guarantee is seeking to enforce such Parent
             Guarantee, the Parent shall notify the Majority Owned
             Subsidiary(s) obligated, either directly or indirectly
             through a wholly-owned subsidiary, under the relevant
             Underlying Obligation.  Such Majority Owned Subsidiary(s) or
             wholly-owned subsidiary thereof, as applicable, shall have
             the right, at its own expense, to contest the claim of such
             beneficiary.  If a Majority Owned Subsidiary or wholly-owned
             subsidiary thereof, as applicable, is contesting the claim
             of such beneficiary, the Parent will not perform under the
             relevant Parent Guarantee unless and until, in the Parent's
             reasonable judgment, the Parent is obligated under the terms
             of such Parent Guarantee to perform.  Subject to the
             foregoing, any dispute between a Majority Owned Subsidiary
             or wholly-owned subsidiary thereof, as applicable, and a
             beneficiary of a Parent Guarantee shall not affect such
PAGE
<PAGE>
             Majority Owned Subsidiary's obligation to promptly indemnify
             the Parent hereunder.  Promptly after a Majority Owned
             Subsidiary or wholly-owned subsidiary thereof, as
             applicable, receives notice that a beneficiary of a Credit
             Support Obligation is seeking to enforce such Credit Support
             Obligation, the Majority Owned Subsidiary shall notify the
             Parent.  The Parent shall have the right, at its own
             expense, to contest the claim of such beneficiary.  If the
             Parent or the subsidiary of the Parent on whose behalf the
             Credit Support Obligation is given is contesting the claim
             of such beneficiary, the Majority Owned Subsidiary or
             wholly-owned subsidiary thereof, as applicable, will not
             perform under the relevant Credit Support Obligation unless
             and until, in the Majority Owned Subsidiary's reasonable
             judgment, the Majority Owned Subsidiary or wholly-owned
             subsidiary thereof, as applicable, is obligated under the
             terms of such Credit Support Obligation to perform.  Subject
             to the foregoing, any dispute between the Parent or the
             subsidiary of the Parent on whose behalf the Credit Support
             Obligation was given, on the one hand, and a beneficiary of
             a Credit Support Obligation, on the other, shall not affect
             the Parent's obligation to promptly indemnify the Majority
             Owned Subsidiary or its wholly-owned subsidiary, as
             applicable, hereunder.  

        4.   Upon the request of a Majority Owned Subsidiary, the Parent
             may make loans and advances to the Majority Owned Subsidiary
             or its wholly-owned subsidiaries on a short-term, revolving
             credit basis, from time to time in such amounts as mutually
             determined by the Parent and the Majority Owned Subsidiary.
             The aggregate principal amount of such loans and advances
             shall be reflected on the books and records of the Majority
             Owned Subsidiary (or wholly-owned subsidiary, as applicable)
             and the Parent.  All such loans and advances shall be on an
             unsecured basis unless specifically provided otherwise in
             loan documents executed at that time.  The Majority Owned
             Subsidiary or its wholly-owned subsidiaries, as applicable,
             shall pay interest on the aggregate unpaid principal amount
             of such loans from time to time outstanding at a rate
             ("Interest Rate") equal to the rate of the Commercial Paper
             Composite Rate for 90-day maturities as reported by Merrill
             Lynch Capital Markets, as an average of the last five
             business days of such Majority Owned Subsidiary's latest
             fiscal quarter then ended, plus twenty-five (25) basis
             points.  The Interest Rate shall be adjusted on the first
             business day of each fiscal quarter of such Majority Owned
             Subsidiary pursuant to the Interest Rate formula contained
             in the preceding sentence and shall be in effect for the
             entirety of such fiscal quarter.  Interest shall be computed
             on a 360-day basis.  The aggregate principal amount
             outstanding and accrued interest thereon shall be payable on
             demand.  The principal and accrued interest may be paid by
             the Majority Owned Subsidiaries or their wholly-owned
             subsidiaries, as applicable, at any time or from time to
PAGE
<PAGE>
             time, in whole or in part, without premium or penalty.  All
             payments shall be applied first to accrued interest and then
             to principal.  Principal and interest shall be payable in
             lawful money of the United States of America, in immediately
             available funds, at the principal office of the Parent or at
             such other place as the Parent may designate from time to
             time in writing to the Majority Owned Subsidiary.  The
             unpaid principal amount of any such borrowings, and accrued
             interest thereon, shall become immediately due and payable,
             without demand, upon the failure of the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, to
             pay its debts as they become due, the insolvency of the
             Majority Owned Subsidiary or its wholly-owned subsidiary, as
             applicable, the filing by or against the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, of
             any petition under the U.S. Bankruptcy Code (or the filing
             of any similar petition under the insolvency law of any
             jurisdiction), or the making by the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, of
             an assignment or trust mortgage for the benefit of creditors
             or the appointment of a receiver, custodian or similar agent
             with respect to, or the taking by any such person of
             possession of, any property of the Majority Owned Subsidiary
             or its wholly-owned subsidiary, as applicable.  In case any
             payments of principal and interest shall not be paid when
             due, the Majority Owned Subsidiary or its wholly-owned
             subsidiary, as applicable, further promises to pay all cost
             of collection, including reasonable attorneys' fees.   

        5.   All payments required to be made by a Majority Owned
             Subsidiary or its wholly-owned subsidiaries, as applicable,
             shall be made within two days after receipt of notice from
             the Parent. All payments required to be made by the Parent
             shall be made within two days after receipt of notice from
             the Majority Owned Subsidiary.  

        6.   This Agreement shall be governed by and construed in
             accordance with the laws of the Commonwealth of
             Massachusetts applicable to contracts made and performed
             therein.
PAGE
<PAGE>
             IN WITNESS WHEREOF, the parties have caused this Agreement
        to be executed by their duly authorized officers as of the date
        first above written.


                                      THERMEDICS INC.


                                      By:  _____________________________
                                           John W.Wood Jr.
                                      Title:    President


                                      THERMO VOLTEK CORP. 


                                      By:  _____________________________
                                           Melissa F.Riordan
                                      Title:    Treasurer





                                                                   Exhibit 13












                               THERMO VOLTEK CORP.

                        Consolidated Financial Statements

                                      1997
PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                        Consolidated Statement of Income

    (In thousands except per share amounts)         1997      1996      1995
    ------------------------------------------------------------------------
    Revenues (Note 11)                           $44,648   $48,507   $36,326
                                                 -------   -------   -------
    Costs and Operating Expenses:
      Cost of revenues                            24,860    24,357    18,790
      Selling, general, and administrative
        expenses (Note 9)                         15,992    14,889    11,766
      Research and development expenses            3,620     3,618     2,349
                                                 -------   -------   -------
                                                  44,472    42,864    32,905
                                                 -------   -------   -------
    Operating Income                                 176     5,643     3,421

    Interest Income                                1,247     1,774     2,073
    Interest Expense (includes $605, $706, and
      $706 to related parties; Note 9)            (1,162)   (1,408)   (2,130)
    Gain on Sale of Related-party Investments
      (Notes 2 and 9)                                180         -         -
    Other Income                                      53         -         -
                                                 -------   -------   -------
    Income Before Provision for Income Taxes         494     6,009     3,364
    Provision for Income Taxes (Note 6)              215     1,540       692
                                                 -------   -------   -------
    Net Income                                   $   279   $ 4,469   $ 2,672
                                                 =======   =======   =======

    Earnings per Share (Note 12):
      Basic                                      $   .03   $   .51   $   .41
                                                 =======   =======   =======
      Diluted                                    $   .03   $   .38   $   .28
                                                 =======   =======   =======

    Weighted Average Shares (Note 12):
      Basic                                        9,182     8,827     6,528
                                                 =======   =======   =======
      Diluted                                      9,305    13,628    13,512
                                                 =======   =======   =======


    The accompanying notes are an integral part of these consolidated
    financial statements.

                                        2PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                           Consolidated Balance Sheet

    (In thousands)                                            1997      1996
    ------------------------------------------------------------------------
    Assets
    Current Assets:
      Cash and cash equivalents                            $14,608   $17,874
      Available-for-sale investments, at quoted
        market value (amortized cost of $3,041 and 
        $10,011; includes $1,399 of related-party
        investments in 1996; Notes 2 and 9)                  3,041    10,067
      Accounts receivable, less allowances of $799 and
        $587                                                10,388    12,123
      Inventories                                           10,981    10,725
      Prepaid income taxes and other current assets
        (Note 6)                                             1,999     2,025
                                                           -------   -------
                                                            41,017    52,814
                                                           -------   -------
    Property, Plant, and Equipment, at Cost, Net             3,682     4,151
                                                           -------   -------
    Long-term Prepaid Income Taxes and Other Assets            539       299
                                                           -------   -------
    Cost in Excess of Net Assets of Acquired
      Companies (Note 3)                                    18,058    16,425
                                                           -------   -------
                                                           $63,296   $73,689
                                                           =======   =======

                                        3PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                     Consolidated Balance Sheet (continued)

    (In thousands except share amounts)                       1997      1996
    ------------------------------------------------------------------------
    Liabilities and Shareholders' Investment
    Current Liabilities:
      Notes payable (Note 8)                               $ 2,376   $ 1,666
      Accounts payable                                       3,194     3,718
      Accrued payroll and employee benefits                  1,159     1,264
      Accrued income taxes                                     489     1,244
      Accrued commissions                                    1,080     1,063
      Accrued warranty costs                                   624       449
      Other accrued expenses                                 1,538     1,594
      Due to parent company and affiliated companies           694       901
                                                           -------   -------
                                                            11,154    11,899
                                                           -------   -------
    Subordinated Convertible Obligations
      (includes $10,000 of related-party debt; Note 8)      17,750    19,345
                                                           -------   -------
    Commitments (Note 7)

    Shareholders' Investment (Notes 4 and 5):
      Common stock, $.05 par value, 25,000,000
        shares authorized; 9,939,865 and 9,765,676 
        shares issued                                          497       488
      Capital in excess of par value                        38,799    37,762
      Retained earnings                                      4,563     4,284
      Treasury stock at cost, 1,098,912 and 6,438 shares    (8,836)      (69)
      Cumulative translation adjustment                       (631)      (56)
      Net unrealized gain on available-for-sale
        investments (Note 2)                                     -        36
                                                           -------   -------
                                                            34,392    42,445
                                                           -------   -------
                                                           $63,296   $73,689
                                                           =======   =======


    The accompanying notes are an integral part of these consolidated
    financial statements.

                                        4PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                      Consolidated Statement of Cash Flows

    (In thousands)                               1997      1996        1995
    -----------------------------------------------------------------------
    Operating Activities:
      Net income                             $   279    $ 4,469     $ 2,672
      Adjustments to reconcile net income
        to net cash provided by operating
        activities:
          Depreciation and amortization        2,117      1,636       1,529
          Provision for losses on accounts
            receivable                           326        103         135
          Gain on sale of investments           (180)         -           -
          Other                                 (330)         -         (17)
          Changes in current accounts,
            excluding the effects of
            acquisitions:
              Accounts receivable              1,616     (3,552)     (1,525)
              Inventories                        233       (903)     (2,527)
              Other current assets                25     (1,390)        (44)
              Accounts payable                  (625)      (191)        968
              Other current liabilities       (1,386)       329         720
                                             -------    -------     -------
    Net cash provided by operating
      activities                               2,075        501       1,911
                                             -------    -------     -------
    Investing Activities:
      Acquisitions, net of cash acquired
        (Note 3)                              (2,820)    (6,040)     (4,127)
      Purchases of available-for-sale
        investments                                -     (5,500)     (7,500)
      Proceeds from sale and maturities of
        available-for-sale investments         6,980     21,009      10,000
      Purchases of property, plant, and
        equipment                               (938)    (2,048)     (1,364)
      Other                                     (171)       325         526
                                             -------    -------     -------
    Net cash provided by (used in)
      investing activities                   $ 3,051    $ 7,746     $(2,465)
                                             -------    -------     -------

                                        5PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                Consolidated Statement of Cash Flows (continued)

    (In thousands)                                 1997      1996      1995
    -----------------------------------------------------------------------
    Financing Activities:
      Net increase in short-term obligations    $   979   $   510   $   435
      Net proceeds from issuance of Company
        common stock                                201       232       324
      Repurchases of Company common stock and
        long-term obligations                    (9,655)        -      (132)
                                                -------   -------   -------
    Net cash provided by (used in) financing
      activities                                 (8,475)      742       627
                                                -------   -------   -------
    Exchange Rate Effect on Cash                     83       234      (377)
                                                -------   -------   -------
    Increase (Decrease) in Cash and Cash
      Equivalents                                (3,266)    9,223      (304)
    Cash and Cash Equivalents at Beginning
      of Year                                    17,874     8,651     8,955
                                                -------   -------   -------
    Cash and Cash Equivalents at End of Year    $14,608   $17,874   $ 8,651
                                                =======   =======   =======

    Cash Paid For:
      Interest                                  $ 1,121   $ 1,311   $ 2,034
      Income taxes                              $ 1,335   $ 2,604   $   236

    Noncash Activities:
      Conversions of subordinated convertible
        obligations (Note 8)                    $   895   $17,395   $ 9,111
                                                =======   =======   =======

      Fair value of assets of acquired
        companies                               $ 4,807   $ 7,048   $ 5,228
      Cash paid for acquired companies           (3,248)   (6,300)   (4,157)
                                                -------   -------   -------
        Liabilities assumed of acquired
          companies                             $ 1,559   $   748   $ 1,071
                                                =======   =======   =======


    The accompanying notes are an integral part of these consolidated
    financial statements.

                                        6PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

               Consolidated Statement of Shareholders' Investment

    (In thousands)                              1997       1996        1995
    -----------------------------------------------------------------------
    Common Stock, $.05 Par Value
      Balance at beginning of year          $   488     $   244     $   202
      Issuance of stock under
        employees' and directors'
        stock plans                               3           3           3
      Conversion of subordinated
        convertible obligations 
        (Note 8)                                  6          83          39
      Effect of three-for-two
        stock split                               -         158           -
                                            -------     -------     -------
      Balance at end of year                    497         488         244
                                            -------     -------     -------
    Capital in Excess of Par Value
      Balance at beginning of year           37,762      20,545      11,237
      Issuance of stock under
        employees' and directors'
        stock plans                              10         279         291
      Tax benefit related to
        employees' and directors'
        stock plans                             153         112         166
      Conversion of subordinated
        convertible obligations
        (Note 8)                                874      16,984       8,851
      Effect of three-for-two
        stock split                               -        (158)          -
                                            -------     -------     -------
      Balance at end of year                 38,799      37,762      20,545
                                            -------     -------     -------
    Retained Earnings (Accumulated
      Deficit)
      Balance at beginning of year            4,284        (185)     (2,857)
      Net income                                279       4,469       2,672
                                            -------     -------     -------
      Balance at end of year                $ 4,563     $ 4,284     $  (185)
                                            -------     -------     -------

                                        7PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

         Consolidated Statement of Shareholders' Investment (continued)

    (In thousands)                              1997       1996        1995
    -----------------------------------------------------------------------
    Treasury Stock
      Balance at beginning of year          $   (69)    $   (20)    $   (50)
      Issuance of stock under
        employees' and directors'
        stock plans                             188         (49)         30
      Repurchase of Company common stock     (8,955)          -           -
                                            -------     -------     -------
      Balance at end of year                 (8,836)        (69)        (20)
                                            -------     -------     -------
    Cumulative Translation Adjustment
      Balance at beginning of year              (56)        229         260
      Translation adjustment                   (575)       (285)        (31)
                                            -------     -------     -------
      Balance at end of year                   (631)        (56)        229
                                            -------     -------     -------
    Net Unrealized Gain (Loss) on
      Available-for-sale Investments
      Balance at beginning of year               36         146        (320)
      Change in net unrealized gain
        (loss) on available-for-sale
        investments (Note 2)                    (36)       (110)        466
                                            -------     -------     -------
      Balance at end of year                      -          36         146
                                            -------     -------     -------
    Total Shareholders' Investment          $34,392     $42,445     $20,959
                                            =======     =======     =======


    The accompanying notes are an integral part of these consolidated
    financial statements.

                                        8PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    1.  Nature of Operations and Summary of Significant Accounting Policies

    Nature of Operations
        Thermo Voltek Corp. (the Company) designs, manufactures, and markets
    test instruments and a range of products related to power amplification,
    conversion, and quality. The Company's test instruments simulate pulsed
    electromagnetic interference (pulsed EMI), radio frequency interference
    (RFI), and changes in AC voltage, to allow manufacturers of electronic
    systems and integrated circuits to test for electromagnetic compatibility
    (EMC) to ensure product quality and to meet certain regulatory
    requirements. The Company also provides EMC consulting and
    systems-integration services and distributes EMC-related products. The
    Company's power products include radio frequency (RF) and microwave power
    amplifiers, power-conversion equipment, and high-voltage and
    application-specific power supplies. These power products are used in
    communications, broadcast, research, and medical imaging applications.

    Relationship with Thermedics Inc. and Thermo Electron Corporation
        As of January 3, 1998, Thermedics Inc. owned 5,771,208 shares of the
    Company's common stock, representing 65% of such stock outstanding.
    Thermedics is a 58%-owned subsidiary of Thermo Electron Corporation. As
    of January 3, 1998, Thermo Electron owned 238,200 shares of the Company's
    common stock, representing 3% of such stock outstanding.

    Principles of Consolidation
        The accompanying financial statements include the accounts of the
    Company and its wholly owned subsidiaries. All material intercompany
    accounts and transactions have been eliminated.

    Fiscal Year
        The Company has adopted a fiscal year ending the Saturday nearest
    December 31. References to 1997, 1996, and 1995 are for the fiscal years
    ended January 3, 1998, December 28, 1996, and December 30, 1995,
    respectively. Fiscal year 1997 included 53 weeks; 1996 and 1995 each
    included 52 weeks.

    Revenue Recognition
        The Company recognizes product revenues upon shipment of its
    products. The Company provides a reserve for its estimate of warranty
    costs at the time of shipment. Revenues and profits on substantially all
    contracts are recognized using the percentage-of-completion method.
    Revenues recorded under the percentage-of-completion method were
    $5,367,000 in 1997, $4,806,000 in 1996, and $2,884,000 in 1995. The
    percentage of completion is determined by relating either the actual
    costs or actual labor incurred to date to management's estimate of total
    costs or total labor, respectively, to be incurred on each contract. If a
    loss is indicated on any contract in process, a provision is made
    currently for the entire loss. The Company's contracts generally provide
    for billing of customers upon the attainment of certain milestones
    specified in each contract. Revenues earned on contracts in process in
    excess of billings are included in inventories in the accompanying

                                        9PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    1.  Nature of Operations and Summary of Significant Accounting Policies
        (continued)

    balance sheet and were not material at year-end 1997 and 1996. There are
    no significant amounts included in the accompanying balance sheet that
    are not expected to be recovered from existing contracts at current
    contract values, or that are not expected to be collected within one
    year, including amounts billed but not paid under retainage provisions.

    Stock-based Compensation Plans
        The Company applies Accounting Principles Board Opinion (APB) No. 25,
    "Accounting for Stock Issued to Employees" and related interpretations in
    accounting for its stock-based compensation plans (Note 4). Accordingly,
    no accounting recognition is given to stock options granted at fair
    market value until they are exercised. Upon exercise, net proceeds,
    including tax benefits realized, are credited to equity.

    Income Taxes
        In accordance with Statement of Financial Accounting Standards (SFAS)
    No. 109, "Accounting for Income Taxes," the Company recognizes deferred
    income taxes based on the expected future tax consequences of differences
    between the financial statement basis and the tax basis of assets and
    liabilities calculated using enacted tax rates in effect for the year in
    which the differences are expected to be reflected in the tax return.

    Earnings per Share
        During the fourth quarter of 1997, the Company adopted SFAS No. 128,
    "Earnings per Share" (Note 12). As a result, all previously reported
    earnings per share have been restated; however, basic earnings per share
    equals the Company's previously reported primary earnings per share for
    1996 and diluted earnings per share equals the Company's previously
    reported fully diluted earnings per share for 1996 and 1995. Basic
    earnings per share have been computed by dividing net income by the
    weighted average number of shares outstanding during the year. Except
    where the result would be antidilutive, diluted earnings per share have
    been computed assuming the conversion of convertible obligations and the
    elimination of the related interest expense, and the exercise of stock
    options, as well as their related income tax effects (Note 12).

    Stock Split
        All share and per share information has been restated to reflect a
    three-for-two stock split, effected in the form of a 50% stock dividend,
    distributed in August 1996.

                                       10PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    1.  Nature of Operations and Summary of Significant Accounting Policies
        (continued)

    Cash and Cash Equivalents
        At year-end 1997 and 1996, $13,744,000 and $16,623,000, respectively,
    of the Company's cash equivalents were invested in a repurchase agreement
    with Thermo Electron. Under this agreement, the Company in effect lends
    excess cash to Thermo Electron, which Thermo Electron collateralizes with
    investments principally consisting of corporate notes, commercial paper,
    U.S. government-agency securities, money market funds, and other
    marketable equity securities, in the amount of at least 103% of such
    obligation. The Company's funds subject to the repurchase agreement are
    readily convertible into cash by the Company. The repurchase agreement
    earns a rate based on the 90-day Commercial Paper Composite Rate plus 25
    basis points, set at the beginning of each quarter. Cash equivalents are
    carried at cost, which approximates market value.

    Inventories
        Inventories are stated at the lower of cost (on a first-in, first-out
    basis) or market value and include materials, labor, and manufacturing
    overhead. The components of inventories are as follows:

    (In thousands)                                         1997        1996
    -----------------------------------------------------------------------
    Raw materials                                       $ 5,100     $ 4,835
    Work in process                                       4,089       3,097
    Finished goods                                        1,792       2,793
                                                        -------     -------
                                                        $10,981     $10,725
                                                        =======     =======

    Property, Plant, and Equipment
        The costs of additions and improvements are capitalized, while
    maintenance and repairs are charged to expense as incurred. The Company
    provides for depreciation and amortization using the straight-line method
    over the estimated useful lives of the property as follows: building and
    improvements, 5 to 25 years; machinery and equipment, 2 to 10 years; and
    leasehold improvements, the shorter of the term of the lease or the life
    of the asset. Property, plant, and equipment consists of the following:

    (In thousands)                                         1997        1996
    -----------------------------------------------------------------------
    Land and building                                   $ 1,808     $ 1,806
    Machinery, equipment, and leasehold improvements      8,829       7,933
                                                        -------     -------
                                                         10,637       9,739
    Less: Accumulated depreciation and amortization       6,955       5,588
                                                        -------     -------
                                                        $ 3,682     $ 4,151
                                                        =======     =======

                                       11PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    1.  Nature of Operations and Summary of Significant Accounting Policies
        (continued)

    Cost in Excess of Net Assets of Acquired Companies
        The excess of cost over the fair value of net assets of acquired
    companies is amortized using the straight-line method over periods not
    exceeding 40 years. Accumulated amortization was $1,886,000 and
    $1,371,000 at year-end 1997 and 1996, respectively. The Company assesses
    the future useful life of this asset whenever events or changes in
    circumstances indicate that the current useful life has diminished. The
    Company considers the future undiscounted cash flows of the acquired
    companies in assessing the recoverability of this asset. If impairment
    has occurred, any excess of carrying value over fair value is recorded as
    a loss.

    Foreign Currency
        All assets and liabilities of the Company's foreign subsidiaries are
    translated at year-end exchange rates, and revenues and expenses are
    translated at average exchange rates for the year in accordance with SFAS
    No. 52, "Foreign Currency Translation." Resulting translation adjustments
    are reflected as a separate component of shareholders' investment titled
    "Cumulative translation adjustment." Foreign currency transaction gains
    and losses are included in the accompanying statement of income and are
    not material for the three years presented.

    Use of Estimates
        The preparation of financial statements in conformity with generally
    accepted accounting principles requires management to make estimates and
    assumptions that affect the reported amounts of assets and liabilities,
    disclosure of contingent assets and liabilities at the date of the
    financial statements, and the reported amounts of revenues and expenses
    during the reporting period. Actual results could differ from those
    estimates.

    Presentation
        Certain amounts in 1996 have been reclassified to conform to the
    presentation in the 1997 financial statements.

    2.  Available-for-sale Investments

        In accordance with SFAS No. 115, "Accounting for Certain Investments
    in Debt and Equity Securities," the Company's debt and marketable equity
    securities are considered available-for-sale investments in the
    accompanying balance sheet and are carried at market value, with the
    difference between cost and market value, net of related tax effects,
    recorded currently as a component of shareholders' investment titled "Net
    unrealized gain on available-for-sale investments."

                                       12PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    2.  Available-for-sale Investments (continued)

        The aggregate market value, cost basis, and gross unrealized gains
    and losses of available-for-sale investments by major security type are
    as follows:

                                                         Gross        Gross
                               Market         Cost  Unrealized   Unrealized
    (In thousands)              Value        Basis       Gains       Losses
    -----------------------------------------------------------------------
    1997

    Corporate bonds          $ 1,001      $ 1,001     $     -      $     -
    Other                      2,040        2,040           -            -
                             -------      -------     -------      -------
                             $ 3,041      $ 3,041     $     -      $     -
                             =======      =======     =======      =======

    1996
    Government-agency
      securities             $ 4,501      $ 4,500     $     1      $     -
    Corporate bonds            2,379        2,314          65            -
    Money market preferred
      stock                    1,060        1,070           -          (10)
    Other                      2,127        2,127           -            -
                             -------      -------     -------      -------
                             $10,067      $10,011     $    66      $   (10)
                             =======      =======     =======      =======

        All of the Company's available-for-sale investments in the
    accompanying 1997 balance sheet had contractual maturities of one year or
    less. Actual maturities may differ from contractual maturities as a
    result of the Company's intent to sell these securities prior to maturity
    and as a result of put and call options that enable the Company, the
    issuer, or both to redeem these securities at an earlier date.
        Gain on the sale of investments in the accompanying 1997 statement of
    income represents the gross realized gains relating to the sale of
    related-party available-for-sale investments (Note 9). To determine the
    gain, the cost of such investments was based on specific identification.

    3.  Acquisitions

        In April 1997, the Company acquired substantially all of the assets,
    subject to certain liabilities, of Milmega Ltd. for approximately
    $3,248,000 in cash. Milmega primarily manufactures and markets microwave
    amplifiers that are suitable for EMC testing, physics research, and
    communications, medical, and military applications.

                                       13PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    3.  Acquisitions (continued)

        In July 1996, the Company acquired substantially all of the assets,
    subject to certain liabilities, of Pacific Power Source Corporation for
    $6,300,000 in cash, including the repayment of $800,000 in debt. Pacific
    Power manufactures programmable power amplifiers that can be incorporated
    into EMC test equipment to assess how well electronics tolerate normal
    variations in the quality and quantity of AC voltage. These amplifiers
    are also used in other kinds of test equipment and in
    application-specific power supplies.
        In March 1995, the Company acquired substantially all of the assets,
    subject to certain liabilities, of Kalmus Engineering Incorporated and
    R.F. Power Labs, Incorporated (collectively, Kalmus) for $3,755,000 in
    cash. Kalmus is a manufacturer of radio frequency power amplifiers and
    systems used to test products for immunity to RFI and in medical imaging
    and telecommunications applications.
        Additionally, the Company acquired a component-reliability product
    line in 1995 for approximately $402,000 in cash.
        These acquisitions have been accounted for using the purchase method
    of accounting, and their results of operations have been included in the
    accompanying financial statements from their respective dates of
    acquisition. The aggregate cost of these acquisitions exceeded the
    estimated fair value of the acquired net assets by $10,413,000, which is
    being amortized over periods not exceeding 40 years. Allocation of the
    purchase price for these acquisitions was based on estimates of the fair
    value of the net assets acquired and, for Milmega, is subject to
    adjustment upon finalization of the purchase price allocation. The
    Company has gathered no information that indicates that the final
    allocation will differ materially from the preliminary estimate.
        Pro forma data is not presented for the Company's acquisitions since
    they were not material to the Company's results of operations.

    4.  Employee Benefit Plans

    Stock-based Compensation Plans

    Stock Option Plans
    ------------------
        The Company has stock-based compensation plans for its key employees,
    directors, and others. Two of the plans, adopted in 1985 and 1990, permit
    the grant of nonqualified and incentive stock options. The plan adopted
    in 1985 expired in 1995, and no grants were made after that date. A third
    plan, adopted in 1994, permits the grant of a variety of stock and
    stock-based awards as determined by the human resources committee of the
    Company's Board of Directors (the Board Committee), including restricted
    stock, stock options, stock bonus shares, or performance-based shares. To
    date, only nonqualified stock options have been awarded under this plan.
    The option recipients and the terms of options granted under these plans
    are determined by the Board Committee. Generally, options granted to date
    are exercisable immediately, but are subject to certain transfer
    restrictions and the right of the Company to repurchase shares issued
    upon exercise of the options at the exercise price, upon certain events. 

                                       14PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    4.  Employee Benefit Plans (continued)

    The restrictions and repurchase rights generally lapse ratably over a
    five to ten year  period, depending on the term of the option, which may
    range from five to twelve years. Nonqualified stock options may be
    granted at any price determined by the Board Committee, although
    incentive stock options must be granted at not less than the fair market
    value of the Company's stock on the date of grant. To date, all options
    have been granted at fair market value. The Company also has a directors'
    stock option plan, adopted in 1993, that provides for the grant of stock
    options to outside directors pursuant to a formula approved by the
    Company's shareholders. Options awarded under this plan are exercisable
    six months after the date of grant and expire three or seven years after
    the date of grant. In addition to the Company's stock-based compensation
    plans, certain officers and key employees may also participate in the
    stock-based compensation plans of Thermo Electron and Thermedics.
        A summary of the Company's stock option activity is as follows:

                              1997              1996               1995
                        ----------------  ----------------  ----------------
                                Weighted          Weighted          Weighted
                        Number   Average  Number   Average  Number   Average
    (Shares                 of  Exercise      of  Exercise      of  Exercise
    in thousands)       Shares     Price  Shares     Price  Shares     Price
    ------------------------------------------------------------------------
    Options outstanding,
      beginning of year   782     $ 6.37     766   $ 5.22      740   $ 4.07

        Granted           196       8.27     115    12.52      167     8.73

        Exercised         (95)      3.28     (55)    3.64      (98)    2.94

        Forfeited         (93)      9.06     (44)    5.74      (43)    4.30
                        -----              -----             -----
    Options outstanding,
      end of year         790     $ 6.90     782   $ 6.37      766   $ 5.22
                        =====     ======   =====   ======    =====   ======

    Options exercisable   790     $ 6.90     782   $ 6.37      766   $ 5.22
                        =====     ======   =====   ======    =====   ======
    Options available
      for grant           281                 85               155
                        =====              =====             =====



                                       15PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    4.  Employee Benefit Plans (continued)

        A summary of the status of the Company's stock options at January 3,
    1998, is as follows:
                                       Options Outstanding and Exercisable
                                       -----------------------------------
                                                                  Weighted
                                                Weighted Average   Average
                                        Number         Remaining  Exercise
    Range of Exercise Prices            Shares  Contractual Life     Price
    ----------------------------------------------------------------------
    (Shares in thousands)

    $ 1.59 - $ 4.70                        221        2.0 years     $ 3.30
      4.71 -   7.82                        324        6.7 years       6.33
      7.83 -  10.93                        173        5.6 years      10.15
     10.94 -  14.05                         72        6.0 years      12.60
                                           ---
    $ 1.59 - $14.05                        790        5.1 years     $ 6.90
                                           ===

    Employee Stock Purchase Program
    -------------------------------
        Substantially all of the Company's full-time U.S. employees are
    eligible to participate in an employee stock purchase program sponsored
    by the Company and Thermo Electron. Under this program, shares of the
    Company's and Thermo Electron's common stock may be purchased at the end
    of a 12-month period at 95% of the fair market value at the beginning of
    the period, and the shares purchased are subject to a six-month resale
    restriction. Prior to November 1, 1995, the applicable shares of common
    stock could be purchased at 85% of the fair market value at the beginning
    of the period, and the shares purchased were subject to a one-year resale
    restriction. Shares are purchased through payroll deductions of up to 10%
    of each participating employee's gross wages.

    Pro Forma Stock-based Compensation Expense
        In October 1995, the Financial Accounting Standards Board issued SFAS
    No. 123, "Accounting for Stock-based Compensation," which sets forth a
    fair-value based method of recognizing stock-based compensation expense.
    As permitted by SFAS No. 123, the Company has elected to continue to
    apply APB No. 25 to account for its stock-based compensation plans. Had
    compensation cost for awards in 1997, 1996, and 1995 under the Company's
    stock-based compensation plans been determined based on the fair value at

                                       16PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    4.  Employee Benefit Plans (continued)

    the grant dates consistent with the method set forth under SFAS No. 123,
    the effect on the Company's net income and earnings per share would have
    been as follows:

    (In thousands except per share amounts)      1997       1996        1995
    ------------------------------------------------------------------------
    Net income:
      As reported                             $  279      $4,469     $2,672
      Pro forma                                   16       4,294      2,601
    Basic earnings per share:
      As reported                                .03         .51        .41
      Pro forma                                    -         .49        .40
    Diluted earnings per share:
      As reported                                .03         .38        .28
      Pro forma                                    -         .37        .28

        Because the method prescribed by SFAS No. 123 has not been applied to
    options granted prior to January 1, 1995, the resulting pro forma
    compensation expense may not be representative of the amount to be
    expected in future years. Pro forma compensation expense for options
    granted is reflected over the vesting period; therefore, future pro forma
    compensation expense may be greater as additional options are granted.
        The weighted average fair value per share of options granted was
    $3.41, $5.58, and $3.70 in 1997, 1996, and 1995, respectively. The fair
    value of each option grant was estimated on the grant date using the
    Black-Scholes option-pricing model with the following weighted-average
    assumptions:

                                                 1997       1996        1995
    ------------------------------------------------------------------------
    Volatility                                    37%        41%        41%
    Risk-free interest rate                      6.1%       6.6%       6.3%
    Expected life of options                4.8 years    5 years  4.4 years

        The Black-Scholes option-pricing model was developed for use in
    estimating the fair value of traded options that have no vesting
    restrictions and are fully transferable. In addition, option-pricing
    models require the input of highly subjective assumptions, including
    expected stock price volatility. Because the Company's employee stock
    options have characteristics significantly different from those of traded
    options, and because changes in the subjective input assumptions can
    materially affect the fair value estimate, in management's opinion, the
    existing models do not necessarily provide a reliable single measure of
    the fair value of its employee stock options.

                                       17PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    4.  Employee Benefit Plans (continued)

    401(k) Savings Plan
        Substantially all of the Company's full-time U.S. employees are
    eligible to participate in Thermo Electron's 401(k) savings plan.
    Contributions to the plan are made by both the employee and the Company.
    Company contributions are based upon the level of employee contributions.
    For this plan, the Company contributed and charged to expense $258,000,
    $249,000, and $184,000 in 1997, 1996, and 1995, respectively.

    5.  Common Stock

        At January 3, 1998, the Company had reserved 4,670,330 unissued
    shares of its common stock for possible issuance under stock-based
    compensation plans and for issuance upon possible conversion of the
    Company's subordinated convertible obligations.

    6.  Income Taxes

        The components of income before provision for income taxes are as
    follows:

    (In thousands)                                 1997      1996      1995
    -----------------------------------------------------------------------
    Domestic                                   $ 1,805   $ 4,684   $ 2,616
    Foreign                                     (1,311)    1,325       748
                                               -------   -------   -------
                                               $   494   $ 6,009   $ 3,364
                                               =======   =======   =======

        The components of the provision for income taxes are as follows:

    (In thousands)                                 1997      1996      1995
    -----------------------------------------------------------------------
    Currently payable (receivable):
      Federal                                   $  815    $1,554    $  608
      Foreign                                     (540)      466       323
      State                                         92       249       276
                                                ------    ------    ------
                                                   367     2,269     1,207
                                                ------    ------    ------
    Net prepaid:
      Federal                                     (132)     (689)     (412)
      State                                        (20)      (40)     (103)
                                                ------    ------    ------
                                                  (152)     (729)     (515)
                                                ------    ------    ------
                                                $  215    $1,540    $  692
                                                ======    ======    ======

                                       18PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    6.  Income Taxes (continued)

        The Company receives a tax deduction upon exercise of nonqualified
    stock options by employees for the difference between the exercise price
    and the market price of the Company's common stock on the date of
    exercise. The provision for income taxes that is currently payable does
    not reflect $153,000, $112,000, and $166,000 of such benefits allocated
    to capital in excess of par value in 1997, 1996, and 1995, respectively.
        The provision for income taxes in the accompanying statement of
    income differs from the provision calculated by applying the statutory
    federal income tax rate of 34% to income before provision for income
    taxes due to the following:

    (In thousands)                                 1997      1996      1995
    -----------------------------------------------------------------------
    Provision for income taxes at
      statutory rate                             $  168    $2,043    $1,144
    Increases (decreases) resulting from:
      Decrease in valuation allowance                 -      (684)     (630)
      State income taxes, net of federal tax         48       138       114
      Nondeductible expenses                         63        62        86
      Foreign tax rate and tax regulation
        differential                                 10        15        68
      Foreign sales corporation                     (89)     (123)      (87)
      Other                                          15        89        (3)
                                                 ------    ------    ------
                                                 $  215    $1,540    $  692
                                                 ======    ======    ======

        Prepaid income taxes in the accompanying balance sheet consist of the
    following:

    (In thousands)                                 1997      1996
    -------------------------------------------------------------
    Prepaid (deferred) income taxes:
      Tax loss and credit carryforwards          $  568    $  652
      Accruals and reserves                         199        65
      Inventory basis differences                   875       693
      Accrued compensation                          470       290
      Allowance for doubtful accounts               174        82
      Other                                        (108)       20
                                                 ------    ------
                                                 $2,178    $1,802
                                                 ======    ======

        The Company had a valuation allowance at year-end 1995 that primarily
    related to uncertainty surrounding the realization of tax loss and credit
    carryforwards and certain other tax assets of the Company. The valuation
    allowance was eliminated in 1996. Of the total decrease to the valuation
    allowance, $684,000 related to reduced uncertainty surrounding the
    realizability of the tax loss and credit carryforwards, and was recorded

                                       19PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    6.  Income Taxes (continued)

    as a decrease in the provision for income taxes in 1996. The remaining
    decrease in the valuation allowance primarily related to the elimination
    of related tax loss and credit carryforwards due to the inability to
    obtain a benefit prior to the expiration thereof. The provision for
    income taxes was reduced by $630,000 in 1995 as a result of changes in
    the amount of estimated tax assets and the utilization of a portion of
    the Company's tax loss and credit carryforwards.
        The Company has federal tax net loss carryforwards, subject to the
    limitations described below. These net operating loss carryforwards will
    begin to expire in 1999. Pursuant to U.S. Internal Revenue Code Sections
    382 and 383, the utilization of the net operating loss carryforwards is
    limited to the tax benefit of a deduction of approximately $240,000 per
    year with any unused portion of this annual limitation carried forward to
    future years. As of January 3, 1998, net operating loss carryforwards
    totaled $2.5 million, including $0.6 million that have not been benefited
    since they will expire unused.
        A provision has not been made for U.S. or additional foreign taxes on
    $0.6 million of undistributed earnings of foreign subsidiaries that could
    be subject to tax if remitted to the U.S. because the Company currently
    plans to keep these amounts permanently reinvested overseas.

    7.  Commitments

        The Company occupies office and operating facilities under operating
    leases expiring at various dates through 2010. The accompanying statement
    of income includes expenses from operating leases of $886,000, $555,000,
    and $381,000 in 1997, 1996, and 1995, respectively. The future minimum
    payments due under noncancellable operating leases as of January 3, 1998,
    are $814,000 in 1998; $745,000 in 1999; $655,000 in 2000; $312,000 in
    2001; $149,000 in 2002; and $89,000 in 2003 and thereafter. Total future
    minimum lease payments are $2,764,000.

    8.  Short- and Long-term Obligations

    Short-term Obligations
        The Company has lines of credit denominated in certain foreign
    currencies to borrow up to approximately $3,638,000. Amounts borrowed
    under these arrangements are classified as notes payable in the
    accompanying balance sheet. The weighted average interest rate for these
    borrowings at year-end 1997 and 1996 was 8.0% and 6.3%, respectively.
    Unused lines of credit were $1,262,000 at January 3, 1998.

                                       20PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    8.  Short- and Long-term Obligations (continued)

    Long-term Obligations
        Long-term obligations of the Company are as follows:

    (In thousands except per share amounts)                  1997       1996
    ------------------------------------------------------------------------
    3 3/4% Subordinated convertible debentures,
      due 2000, convertible at $7.83 per share (a)        $ 7,750    $ 9,345
    5% Subordinated convertible note, due 2003,
      convertible at $3.78 per share (b)                    4,000      4,000
    6 3/4% Subordinated convertible note, due 2002,
      convertible at $4.27 per share (b)                    6,000      6,000
                                                          -------    -------
                                                          $17,750    $19,345
                                                          =======    =======
    ___________
    (a) In lieu of issuing shares of the Company's common stock upon
        conversion, the Company has the option to pay holders of the
        debentures cash equal to the weighted average market price of the
        Company's common stock on the last trading date prior to conversion. 
    (b) Represents an obligation to Thermedics.

        During 1997 and 1996, $895,000 and $17,395,000, respectively, of
    convertible obligations were converted into shares of the Company's
    common stock.
        Short- and long-term obligations in the accompanying balance sheet
    are guaranteed on a subordinated basis by Thermo Electron. Thermedics has
    agreed to reimburse Thermo Electron in the event Thermo Electron is
    required to make a payment under the guarantees.
        See Note 10 for fair value information pertaining to the Company's
    long-term obligations.

    9.  Related-party Transactions

    Corporate Services Agreement
        The Company and Thermo Electron have a corporate services agreement
    under which Thermo Electron's corporate staff provides certain
    administrative services, including certain legal advice and services,
    risk management, certain employee benefit administration, tax advice and
    preparation of tax returns, centralized cash management, and certain
    financial and other services, for which the Company paid Thermo Electron
    annually an amount equal to 1.0% of the Company's revenues in 1997 and
    1996 and 1.20% of the Company's revenues in 1995. For these services, the
    Company was charged $446,000, $485,000, and $436,000 in 1997, 1996, and
    1995, respectively. Beginning in fiscal 1998, the Company will pay an
    annual fee equal to 0.8% of the Company's revenues. The annual fee is
    reviewed and adjusted annually by mutual agreement of the parties. The
    corporate services agreement is renewed annually but can be terminated
    upon 30 days' prior notice by the Company or upon the Company's
    withdrawal from the Thermo Electron Corporate Charter (the Thermo
    Electron Corporate Charter defines the relationship among Thermo Electron

                                       21PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    9.  Related-party Transactions (continued)

    and its majority-owned subsidiaries). Management believes that the
    service fee charged by Thermo Electron is reasonable and that such fees
    are representative of the expenses the Company would have incurred on a
    stand-alone basis. For additional items such as employee benefit plans,
    insurance coverage, and other identifiable costs, Thermo Electron charges
    the Company based upon costs attributable to the Company.

    Repurchase Agreement
        The Company invests excess cash in a repurchase agreement with Thermo
    Electron as discussed in Note 1.
    Available-for-sale Investments
        At December 28, 1996, the Company's available-for-sale investments
    included $1,399,000 (amortized cost of $1,336,000), of 6 1/2%
    subordinated convertible debentures, which were purchased on the open
    market. These debentures, which were sold in 1997 for a gain of $180,000,
    had a par value of $1,300,000 and were issued by Thermo TerraTech Inc., a
    majority-owned subsidiary of Thermo Electron.

    Subordinated Convertible Notes
        See Note 8 for subordinated convertible notes of the Company held by
    Thermedics.

    10. Fair Value of Financial Instruments
        The Company's financial instruments consist mainly of cash and cash
    equivalents, available-for-sale investments, accounts receivable, notes
    payable, accounts payable, due to parent company and affiliated
    companies, and subordinated convertible obligations. The carrying amounts
    of these financial instruments, with the exception of available-for-sale
    investments and subordinated convertible obligations, approximate fair
    value due to their short-term nature. 
        Available-for-sale investments are carried at fair value in the
    accompanying balance sheet. The fair values were determined based on
    quoted market prices. See Note 2 for fair value information pertaining to
    these financial instruments.
        The fair value of the Company's subordinated convertible obligations
    was determined based on quoted market prices. The carrying amount and
    fair value of the Company's subordinated convertible obligations are as
    follows:

                                       1997                    1996
                              ---------------------   ---------------------
                              Carrying         Fair   Carrying         Fair
    (In thousands)              Amount        Value     Amount        Value
    -----------------------------------------------------------------------
    Subordinated convertible
      obligations              $17,750      $21,263    $19,345     $38,836

        The fair value of subordinated convertible obligations exceeds the
    carrying amount primarily due to the market price of the Company's common
    stock exceeding the conversion price of the subordinated convertible
    obligations.

                                       22PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    11. Geographical Information

        The following table shows data for the Company by geographical area.

    (In thousands)                                  1997      1996      1995
    ------------------------------------------------------------------------
    Revenues:
        United States                            $31,415   $31,013   $23,375
        The Netherlands                            7,509     8,164     6,977
        United Kingdom                             4,621     8,565     6,967
        Italy                                      2,421     3,460     2,143
        Transfers among geographical areas (a)    (1,318)   (2,695)   (3,136)
                                                 -------   -------   -------
                                                 $44,648   $48,507   $36,326
                                                 =======   =======   =======
    Income before provision for income taxes:
        United States                            $ 2,829   $ 5,045   $ 3,343
        The Netherlands                              247       798       405
        United Kingdom                            (1,357)      370       388
        Italy                                       (231)      236       123
        Corporate and eliminations (b)            (1,312)     (806)     (838)
                                                 -------   -------   -------
        Total operating income                       176     5,643     3,421
        Interest and other income (expense), net     318       366       (57)
                                                 -------   -------   -------
                                                 $   494   $ 6,009   $ 3,364
                                                 =======   =======   =======

    Identifiable assets:
        United States                            $33,731   $30,954   $21,816
        The Netherlands                            4,147     5,249     5,238
        United Kingdom                             5,099     6,561     5,015
        Italy                                      1,115     1,643     1,914
        Corporate (c)                             19,204    29,282    34,862
                                                 -------   -------   -------
                                                 $63,296   $73,689   $68,845
                                                 =======   =======   =======

    Export revenues included in United States
      revenues above (d):
        Europe                                   $ 4,733   $ 2,150   $ 4,598
        Asia                                       6,041     7,881     4,994
        Other                                      1,249     1,513       330
                                                 -------   -------   -------
                                                 $12,023   $11,544   $ 9,922
                                                 =======   =======   =======

    (a) Transfers among geographical areas are accounted for at prices that
        are representative of transactions with unaffiliated parties.
    (b) Primarily corporate general and administrative expenses.
    (c) Primarily cash and cash equivalents and available-for-sale
       investments.
    (d) In general, export sales are denominated in U.S. dollars.

                                       23PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    12. Earnings per Share

        Basic and diluted earnings per share were calculated as follows:

    (In thousands except per share amounts)     1997       1996        1995
    -----------------------------------------------------------------------
    Basic
    Net income                               $   279    $ 4,469     $ 2,672
                                             -------    -------     -------
    Weighted average shares                    9,182      8,827       6,528
                                             -------    -------     -------
    Basic earnings per share                 $   .03    $   .51     $   .41
                                             =======    =======     =======

    Diluted
    Net income                               $   279    $ 4,469     $ 2,672
    Effect of:
      Convertible obligations                      -        731       1,123
                                             -------    -------     -------
    Income available to common
      shareholders, as adjusted              $   279    $ 5,200     $ 3,795
                                             -------    -------     -------
    Weighted average shares                    9,182      8,827       6,528
    Effect of:
      Convertible obligations                      -      4,553       6,781
      Stock options                              123        248         203
                                             -------    -------     -------
    Weighted average shares, as adjusted       9,305     13,628      13,512
                                             -------    -------     -------
    Diluted earnings per share               $   .03    $   .38     $   .28
                                             =======    =======     =======

        The computation of diluted earnings per share in each period excludes
    the effect of assuming the exercise of certain outstanding stock options
    because the effect would be antidilutive. As of January 3, 1998, there
    were 347,750 of such options outstanding, with exercise prices ranging
    from $7.01 to $14.40 per share.
        In addition, the computation of diluted earnings per share for 1997
    excludes the effect of assuming the conversion of all of the Company's
    convertible obligations (Note 8) because the effect would be
    antidilutive.

                                       24PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    13. Unaudited Quarterly Information

    (In thousands except per share amounts)

    1997                             First     Second(a)    Third     Fourth
    ------------------------------------------------------------------------
    Revenues                       $ 9,716    $11,888     $11,132    $11,912
    Gross profit                     4,265      5,446       4,983      5,094
    Net income (loss)                 (333)       160         427         25
    Basic and diluted earnings
      (loss) per share                (.03)       .02         .05          -

    1996                             First     Second       Third(b)  Fourth
    ------------------------------------------------------------------------
    Revenues                       $10,621    $11,882     $12,800    $13,204
    Gross profit                     5,231      5,729       6,330      6,860
    Net income                         937      1,132       1,194      1,206
    Earnings per share:
      Basic                            .12        .13         .13        .13
      Diluted                          .09        .10         .10        .10

    (a) Reflects the April 1997 acquisition of Milmega.
    (b)Reflects the July 1996 acquisition of Pacific Power.

                                       25PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                    Report of Independent Public Accountants

    To the Shareholders and Board of Directors of Thermo Voltek Corp.:

        We have audited the accompanying consolidated balance sheet of Thermo
    Voltek Corp. (a Delaware corporation and 65%-owned subsidiary of
    Thermedics Inc.) and subsidiaries as of January 3, 1998, and December 28,
    1996, and the related consolidated statements of income, shareholders'
    investment, and cash flows for each of the three years in the period
    ended January 3, 1998. These consolidated financial statements are the
    responsibility of the Company's management. Our responsibility is to
    express an opinion on these consolidated financial statements based on
    our audits.
        We conducted our audits in accordance with generally accepted
    auditing standards. Those standards require that we plan and perform the
    audit to obtain reasonable assurance about whether the consolidated
    financial statements are free of material misstatement. An audit includes
    examining, on a test basis, evidence supporting the amounts and
    disclosures in the financial statements. An audit also includes assessing
    the accounting principles used and significant estimates made by
    management, as well as evaluating the overall financial statement
    presentation. We believe that our audits provide a reasonable basis for
    our opinion.
        In our opinion, the consolidated financial statements referred to
    above present fairly, in all material respects, the financial position of
    Thermo Voltek Corp. and subsidiaries as of January 3, 1998, and December
    28, 1996, and the results of their operations and their cash flows for
    each of the three years in the period ended January 3, 1998, in
    conformity with generally accepted accounting principles.



                                              Arthur Andersen LLP



    Boston, Massachusetts
    February 12, 1998

                                       26PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                     Management's Discussion and Analysis of
                  Financial Condition and Results of Operations

        Forward-looking statements, within the meaning of Section 21E of the
    Securities Exchange Act of 1934, are made throughout this Management's
    Discussion and Analysis of Financial Condition and Results of Operations.
    For this purpose, any statements contained herein that are not statements
    of historical fact may be deemed to be forward-looking statements.
    Without limiting the foregoing, the words "believes," "anticipates,"
    "plans," "expects," "seeks," "estimates," and similar expressions are
    intended to identify forward-looking statements. There are a number of
    important factors that could cause the results of the Company to differ
    materially from those indicated by such forward-looking statements,
    including those detailed immediately after this Management's Discussion
    and Analysis of Financial Conditions and Results of Operations under the
    heading "Forward-looking Statements."

    Overview

        The Company designs, manufactures, and markets electromagnetic
    compatibility (EMC) test instruments and a range of products related to
    power amplification, conversion, and quality. The Company's test
    instruments help manufacturers of electronic systems and integrated
    circuits ensure product quality and meet certain regulatory requirements.
    The Company's power products are used in communications, broadcast,
    research, and medical imaging applications, as well as in EMC testing
    applications.
        The Company's KeyTek Instrument division manufactures instruments
    that test for immunity to pulsed electromagnetic interference (pulsed
    EMI) and systems used in reliability testing and characterization of
    semiconductor devices. Through its Universal Voltronics division, the
    Company manufactures high-voltage power supplies and related equipment
    that transform utility-supplied AC power into DC voltages and currents
    required by the user, while allowing precise control over the performance
    level desired for each application. The Company's Kalmus division
    manufactures radio frequency (RF) power amplifiers and systems used to
    test products for immunity to conducted and radiated radio frequency
    interference (RFI) and in communications, medical, and research
    applications. Comtest Europe B.V. distributes a range of EMC-related
    products, and provides EMC consulting and systems-integration services.
    Acquired in July 1996, Pacific Power Source Corporation manufactures
    power-conversion equipment for use in a variety of commercial
    applications and programmable power amplifiers that can be incorporated
    into EMC test equipment to assess tolerance to normal variances in the
    quality and quantity of AC voltage. Acquired in April 1997, Milmega Ltd.
    primarily manufactures and markets microwave amplifiers that are suitable
    for EMC testing, physics research, and communications, medical, and
    military applications. In October 1997, the Company established its
    Global Power Systems division to market specialized power products,
    particularly for use in boating and marine applications.

                                       27PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                     Management's Discussion and Analysis of
                  Financial Condition and Results of Operations

    Overview (continued)

        During 1997, the Company experienced lower demand for its EMC test
    products, as described below. Due in part to these developments, during
    1997 the Company implemented certain operational, organizational, and
    personnel changes.
        The Company's strategy is to expand through a combination of internal
    product development and the acquisition of new businesses and
    technologies. As discussed above, the Company acquired Pacific Power in
    July 1996 and Milmega Ltd. in April 1997 (Note 3).
        Approximately 57%, 60%, and 63% of the Company's revenues in 1997,
    1996, and 1995, respectively, were derived from sales of products outside
    the U.S., through export sales and sales by the Company's European
    operations. During 1997, the Company had exports from the Company's U.S.
    and foreign operations to Asia of approximately 16% of total revenues,
    primarily to Taiwan, Japan, and South Korea. Asia is experiencing a
    severe economic crisis, which has been characterized by sharply reduced
    economic activity and liquidity, highly volatile foreign-currency-
    exchange and interest rates, and unstable stock markets. The Company's
    export sales to Asia could be adversely affected by the unstable economic
    conditions there.
        Although the Company seeks to charge its customers in the same
    currency as its operating costs, the Company's financial performance and
    competitive position can be affected by currency exchange rate
    fluctuations.

    Results of Operations
    1997 Compared With 1996
        Revenues decreased to $44.6 million in 1997 from $48.5 million in
    1996. The decrease was primarily due to lower demand for the Company's
    EMC test products, resulting from the declining influence of IEC 801, the
    European Union directive on electromagnetic compatibility that took
    effect January 1, 1996, and, to a lesser extent, a decline in the
    component-reliability market for ESD test equipment that resulted from a
    slowdown in capital expenditures by the semiconductor industry. These
    decreases in revenues were offset in part by an increase in revenues of
    $5.8 million due to the acquisitions of Pacific Power in July 1996 and
    Milmega in April 1997. 
        The gross profit margin decreased to 44% in 1997 from 50% in 1996,
    primarily due to a decrease in the sale of certain higher-margin EMC test
    products, as well as the effect of the Company's decrease in total
    revenues.
        Selling, general, and administrative expenses as a percentage of
    revenues increased to 36% in 1997 from 31% in 1996, primarily due to the
    effect of the Company's decrease in revenues, offset in part by the
    effect of the acquisitions of Pacific Power and Milmega, which have lower
    costs as a percentage of revenues. In addition, during the second quarter
    of 1997, the Company incurred $0.4 million of severance and related costs
    associated with reductions in personnel, as part of a continuing

                                       28PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                     Management's Discussion and Analysis of
                  Financial Condition and Results of Operations

    1997 Compared With 1996 (continued)
    evaluation of its lines of business. Research and development expenses
    were $3.6 million in both periods, primarily due to an increase of $0.4
    million related to the acquisitions of Pacific Power and Milmega, offset
    by the completed development of certain new products in the third and
    fourth quarters of 1996.
        Interest income decreased to $1.2 million in 1997 from $1.8 million
    in 1996, primarily due to lower average invested balances. Interest
    expense decreased to $1.2 million in 1997 from $1.4 million in 1996,
    primarily due to conversions of the Company's subordinated convertible
    obligations.
        The effective tax rates were 44% and 26% in 1997 and 1996,
    respectively. The effective tax rate exceeded the statutory federal
    income tax rate in 1997, primarily due to the impact of nondeductible
    expenses and state income taxes. The effective tax rate was below the
    statutory federal income tax rate in 1996, primarily due to the
    elimination of the tax valuation allowance that was no longer required
    (Note 6), offset in part by the impact of state income taxes.
        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.

    1996 Compared With 1995
        Revenues increased 34% to $48.5 million in 1996 from $36.3 million in
    1995, due to an increase in revenues at Comtest, the inclusion of $3.0
    million in revenues from the July 1996 acquisition of Pacific Power, and
    increased revenues at KeyTek and Kalmus. Revenues at Comtest increased
    primarily due to an increase in demand for electrostatic-discharge test
    equipment manufactured by its Verifier division, as well as an increase
    in revenues from a product line for testing immunity to RFI that was
    introduced in 1995. Increased revenues at KeyTek primarily resulted from
    greater demand for its EMC test equipment. Revenues at Kalmus, acquired
    in March 1995, increased $1.1 million due to the inclusion of revenues

                                       29PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                     Management's Discussion and Analysis of
                  Financial Condition and Results of Operations

    1996 Compared With 1995 (continued)
    for the full year in 1996 and $1.3 million primarily due to increased
    shipments resulting from the implementation of manufacturing
    efficiencies.
        The gross profit margin increased to 50% in 1996 from 48% in 1995,
    primarily due to an increase in higher-margin domestic sales at KeyTek
    and an increase in the gross profit margin at Kalmus, primarily due to
    implementation of manufacturing efficiencies.
        Selling, general, and administrative expenses as a percentage of
    revenues decreased to 31% in 1996 from 32% in 1995, primarily due to an
    increase in revenues. Research and development expenses increased to $3.6
    million in 1996 from $2.3 million in 1995, principally due to higher
    research and development expenses at Comtest and KeyTek.
        Interest income decreased to $1.8 million in 1996 from $2.1 million
    in 1995, primarily due to lower average invested balances. Interest
    expense decreased to $1.4 million in 1996 from $2.1 million in 1995,
    primarily due to conversions of the Company's subordinated convertible
    obligations during 1995 and 1996.
        The effective tax rate was 26% in 1996 and 21% in 1995. The effective
    tax rates were below the statutory federal income tax rate primarily due
    to the elimination of the tax valuation allowance that was no longer
    required (Note 6), offset in part by the impact of state income taxes.
    The effective tax rate increased in 1996 primarily due to a decrease in
    tax net operating loss carryforwards as a percentage of income before
    provision for income taxes. 

    Liquidity and Capital Resources

        Consolidated working capital was $29.9 million at January 3, 1998,
    compared with $40.9 million at December 28, 1996. Included in working
    capital are cash, cash equivalents, and available-for-sale investments of
    $17.6 million at January 3, 1998, compared with $27.9 million at December
    28, 1996. During 1997, $2.1 million of cash was provided by operating
    activities. Cash of $1.6 million provided by a decrease in accounts
    receivable as a result of the Company's decrease in revenues was offset
    by cash of $1.4 million used to reduce other current liabilities.
        Excluding available-for-sale investment activity, the Company's
    investing activities in 1997 consisted primarily of the acquisition of
    Milmega for $2.8 million, net of cash acquired (Note 3), and $0.9 million
    of expenditures for purchases of property, plant, and equipment. The
    Company expects to make capital expenditures of approximately $1.4
    million during 1998. 
        The Company's financing activities used $8.5 million of cash during
    1997. In April and December 1997, the Company's Board of Directors
    authorized the repurchase, through various dates ending December 16,
    1998, of up to $15.0 million of Company securities, to be funded from
    working capital. During 1997, the Company expended $9.7 million under
    these authorizations.
        Although the Company expects to have positive cash flow from its
    existing operations, the Company anticipates it will require significant
    amounts of cash for the possible acquisition of complementary businesses

                                       30PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                     Management's Discussion and Analysis of
                  Financial Condition and Results of Operations

    Liquidity and Capital Resources (continued)

    and technologies. While the Company currently has no agreement to make
    any acquisition, it expects that it will finance any acquisition through
    a combination of internal funds, additional debt or equity financing,
    and/or short-term borrowings from Thermo Electron or Thermedics, although
    there is no agreement with these companies to ensure that funds will be
    available on acceptable terms or at all. The Company believes that its
    existing resources are sufficient to meet the capital requirements of its
    existing operations for the foreseeable future.

                                       31PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                           Forward-looking Statements


        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.

        Rapid Technological Change. The market for EMC testing products and
    services is characterized by rapid technological change. No assurance can
    be given that the Company will be able to develop new and enhanced
    instruments that keep pace with technological developments and respond to
    the increasingly complex requirements of electronics manufacturers.

        Reliance on Electrical Standards. Demand for the Company's EMC
    testing products and services is driven to a large extent by mandatory
    government standards and voluntary industry standards relating to
    electromagnetic compatibility. In particular, demand for many of the
    Company's products results from efforts by manufacturers to comply with
    IEC 801, an EC directive that became effective on January 1, 1996. As the
    number of noncomplying manufacturers is reduced over time, demand for the
    Company's products could be adversely affected. In addition, if new EMC
    standards requiring new testing capabilities are enacted less frequently
    or if EMC standards become less strict or are not strictly enforced,
    demand for the Company's products could be adversely affected.

        Sole Source Suppliers. A number of the components of the Company's
    EMC testing products are supplied by single vendors. Although the Company
    has not experienced significant difficulty in obtaining adequate supplies
    from these vendors, and believes that it would be able to identify
    alternative suppliers if necessary, there can be no assurance that the
    unanticipated loss of a single vendor would not result in delays in
    shipments or in the introduction of new products.

        International Sales. International sales account for a significant
    portion of the Company's revenues. Sales to customers in certain foreign
    countries 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 could impose withholding
    taxes or otherwise tax the Company's foreign income, impose tariffs,
    embargoes, or exchange controls, or adopt other restrictions on foreign
    trade; and export licenses, if required, may be difficult to obtain. In
    addition, fluctuations in foreign currency exchange rates could have an
    adverse impact on international sales. A portion of the Company's
    revenues is derived from exports to the Asia. Certain countries in Asia
    are experiencing a severe economic crisis, which has been characterized
    by sharply reduced economic activity and liquidity, highly volatile
    foreign-currency-exchange and interest rates, and unstable stock markets.
    The Company's export sales to Asia could be adversely affected by the
    unstable economic conditions there.

                                       32PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                           Forward-looking Statements

        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 and the need for regulatory
    approval, including antitrust approvals. 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 that are
    not favorable to the Company and, in the case of equity financing, may
    result in dilution to the Company's stockholders.

        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.

                                       33PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements

                         Selected Financial Information

    (In thousands except
    per share amounts)        1997(a)   1996(b)   1995(c)   1994(d)   1993
    ----------------------------------------------------------------------
    Statement of Income Data:
    Revenues               $44,648   $48,507   $36,326   $23,641   $18,089
    Net income                 279     4,469     2,672     1,118       480
    Earnings per share:
      Basic                    .03       .51       .41       .19       .08
      Diluted                  .03       .38       .28       .17       .08

    Balance Sheet Data:
    Working capital        $29,863   $40,915   $41,826   $41,990   $42,023
    Total assets            63,296    73,689    68,845    62,224    57,471
    Long-term
      obligations           17,750    19,345    36,740    46,000    46,000
    Shareholders'
      investment            34,392    42,445    20,959     8,472     7,097

    (a)Reflects the April 1997 acquisition of Milmega.
    (b)Reflects the July 1996 acquisition of Pacific Power.
    (c)Reflects the March 1995 acquisition of Kalmus.
    (d)Reflects the July 1994 acquisition of Verifier.

                                       34PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements


    Common Stock Market Information
        The Company's common stock is traded on the American Stock Exchange
    under the symbol TVL. The following table sets forth the high and low
    sale prices of the Company's common stock for 1997 and 1996, as reported
    in the consolidated transaction reporting system.

                                       1997                     1996
                               --------------------     --------------------
    Quarter                         High        Low         High         Low
    ------------------------------------------------------------------------
    First                      $12  7/8     $ 9 3/8     $14 1/12    $10 1/4
    Second                       9  5/8       6 7/8      15          12 1/12
    Third                        7  9/16      6          14 1/8      10 1/3
    Fourth                       7 13/16      5          14           9 3/4

        As of January 30, 1998, the Company had 330 holders of record of its
    common stock. This does not include holdings in street or nominee names.
    The closing market price on the American Stock Exchange for the Company's
    common stock on January 30, 1998, was $5 5/16 per share.

    Shareholder Services
        Shareholders of Thermo Voltek Corp. who desire information about the
    Company are invited to contact John N. Hatsopoulos, Chief Financial
    Officer, Thermo Voltek Corp., 81 Wyman Street, P.O. Box 9046, Waltham,
    Massachusetts 02254-9046, (781) 622-1111. A mailing list is maintained to
    enable shareholders whose stock is held in street name, and other
    interested individuals, to receive quarterly reports, annual reports, and
    press releases as quickly as possible. Distribution of printed quarterly
    reports is limited to the second quarter only. All material will be
    available from Thermo Electron's Internet site (http://www.thermo.com/
    subsid/tvl1.html).

    Stock Transfer Agent
        American Stock Transfer & Trust Company is the stock transfer agent
    and maintains shareholder activity records. The agent will respond to
    questions on issuance of stock certificates, change of ownership, lost
    stock certificates, and change of address. For these and similar matters,
    please direct inquiries to:

        American Stock Transfer & Trust Company
        Shareholder Services Department
        40 Wall Street, 46th Floor
        New York, New York 10005
        (718) 921-8200

    Dividend Policy
        The Company has never paid cash dividends and does not expect to pay
    cash dividends in the foreseeable future because its policy has been to
    use earnings to finance expansion and growth. Payment of dividends will
    rest within the discretion of the Board of Directors and will depend
    upon, among other factors, earnings, capital requirements, and financial
    condition.

                                       35PAGE
<PAGE>
    Thermo Voltek Corp.                             1997 Financial Statements


    Form 10-K Report
        A copy of the Annual Report on Form 10-K for the fiscal year ended
    January 3, 1998, as filed with the Securities and Exchange Commission,
    may be obtained at no charge by writing to John N. Hatsopoulos, Chief
    Financial Officer, Thermo Voltek Corp., 81 Wyman Street, P.O. Box 9046,
    Waltham, Massachusetts 02254-9046.

    Annual Meeting
        The annual meeting of shareholders will be held on Monday, June 1,
    1998, at 1:30 p.m., at the Hyatt Regency Hotel, Scottsdale, Arizona.

                                       36<PAGE>



                                                                   Exhibit 21

                               THERMO VOLTEK CORP.

                         Subsidiaries of the Registrant


        At February 28, 1998, the Registrant owned the following companies:


                                     State or Jurisdiction     Registrant's %
    Name                                of Incorporation        of Ownership
    -------------------------------------------------------------------------

    Comtest Europe B.V.                The Netherlands              100%
      Comtest Instrumentation, B.V.    The Netherlands              100%
      Comtest Italia S.R.L.                 Italy                   100%
      Comtest Limited                   United Kingdom              100%
        Milmega Limited                 United Kingdom              100%
    TVL Securities Corporation             Delaware                 100%
    UVC Realty Corp.                       New York                 100%


                                                                   Exhibit 23

                    Consent of Independent Public Accountants
                    -----------------------------------------

        As independent public accountants, we hereby consent to the
    incorporation by reference of our reports dated February 12, 1998,
    included in or incorporated by reference into Thermo Voltek Corp.'s
    Annual Report on Form 10-K for the year ended January 3, 1998, into the
    Company's previously filed Registration Statements as follows:
    Registration Statement No. 33-74484 on Form S-3, Registration Statement
    No. 33-52802 on Form S-8, Registration Statement No. 33-71780 on Form
    S-8, Registration Statement No. 33-70646 on Form S-8, Registration
    Statement No. 33-71782 on Form S-8, Registration Statement No. 33-71784
    on Form S-8, Registration Statement No. 33-85954 on Form S-8,
    Registration Statement No. 033-65277 on Form S-8, and Registration
    Statement No. 333-8835 on Form S-8.



                                                 Arthur Andersen LLP



    Boston, Massachusetts
    March 13, 1998


<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THERMO
VOLTEK CORP.'S ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED JANUARY 3, 1998 AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
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<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          JAN-03-1998
<PERIOD-END>                               JAN-03-1998
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<SECURITIES>                                     3,041
<RECEIVABLES>                                   11,187
<ALLOWANCES>                                       799
<INVENTORY>                                     10,981
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<DEPRECIATION>                                   6,955
<TOTAL-ASSETS>                                  63,296
<CURRENT-LIABILITIES>                           11,154
<BONDS>                                          7,750
                                0
                                          0
<COMMON>                                           497
<OTHER-SE>                                      33,895
<TOTAL-LIABILITY-AND-EQUITY>                    63,296
<SALES>                                         44,648
<TOTAL-REVENUES>                                44,648
<CGS>                                           24,860
<TOTAL-COSTS>                                   24,860
<OTHER-EXPENSES>                                 3,620
<LOSS-PROVISION>                                   326
<INTEREST-EXPENSE>                               1,162
<INCOME-PRETAX>                                    494
<INCOME-TAX>                                       215
<INCOME-CONTINUING>                                279
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       279
<EPS-PRIMARY>                                      .03
<EPS-DILUTED>                                      .03
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THERMO
VOLTEK CORP.'S QUARTERLY REPORT ON FORM 10-K FOR THE QUARTER ENDED MARCH 30,
1996 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-28-1996
<PERIOD-END>                               MAR-30-1996
<CASH>                                          12,601
<SECURITIES>                                    21,124
<RECEIVABLES>                                   10,147
<ALLOWANCES>                                       489
<INVENTORY>                                      9,160
<CURRENT-ASSETS>                                53,683
<PP&E>                                           7,869
<DEPRECIATION>                                   4,813
<TOTAL-ASSETS>                                  69,149
<CURRENT-LIABILITIES>                           10,685
<BONDS>                                         21,005
                                0
                                          0
<COMMON>                                           262
<OTHER-SE>                                      25,697
<TOTAL-LIABILITY-AND-EQUITY>                    69,149
<SALES>                                         10,621
<TOTAL-REVENUES>                                10,621
<CGS>                                            5,390
<TOTAL-COSTS>                                    5,390
<OTHER-EXPENSES>                                   710
<LOSS-PROVISION>                                    43
<INTEREST-EXPENSE>                                 435
<INCOME-PRETAX>                                  1,327
<INCOME-TAX>                                       390
<INCOME-CONTINUING>                                937
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       937
<EPS-PRIMARY>                                      .12
<EPS-DILUTED>                                      .09
        

</TABLE>


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