MECHANICAL TECHNOLOGY INC
S-2/A, 1998-08-06
MEASURING & CONTROLLING DEVICES, NEC
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Approximate date of proposed sale to the public: As soon as possible after 
                               effective date.

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
                            ______________________

                                  FORM S-2/A
                            REGISTRATION STATEMENT

                                    UNDER
                          THE SECURITIES ACT OF 1933
                            ______________________


         MECHANICAL TECHNOLOGY                       14-1462255
             INCORPORATED                        (I.R.S. Employer
     (Exact name of registrant as             Identification Number)
       specified in its charter)
                                                968 Albany-Shaker Road
              New York                            Latham, NY 12110
    (State or other jurisdiction                   (518) 785-2211
         of incorporation or                (Address, including zip code,
            organization)                        and telephone number,
                                               including area code, of
         Cynthia A. Scheuer                     registrant's principal
        Mechanical Technology                     executive offices)
            Incorporated
       968 Albany-Shaker Road              Copies of all communications
          Latham, NY 12110                               to:
           (518) 785-2211
    (Name, address, including zip             Catherine S. Hill, Esq.
     code, and telephone number,             Whiteman Osterman & Hanna
    including area code, of agent                One Commerce Plaza
            for service)                          Albany, NY 12260



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

     If the registrant elects to deliver its latest annual report 
to security holders, or a complete and legible facsimile thereof, 
pursuant to Item 11(a)(1) of this Form, check the following box.
[X]











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

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

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

===============================================================================
                         CALCULATION OF REGISTRATION FEE
===============================================================================
                                         Proposed    Proposed
                                         Maximum     Maximum
Title of Each Class of                   Offering    Aggregate    Amount of
Securities to be         Amount to       Price per   Offering     Registration 
Registered               be registered   Share(1)    Price        Fee
- -------------------------------------------------------------------------------
Common Stock                             $           $6,000,000   $1,770
===============================================================================
Total                                    $           $6,000,000   $1,770
===============================================================================

(1)	Common Stock price per share calculated in accordance with 
        Rule 457(c) of the Securities Act using the proposed maximum 
        aggregate Offering Price.

     The registrant hereby amends this Registration Statement on 
such date or dates as may be necessary to delay its effective date 
until the registrant shall file a further amendment that 
specifically states that this Registration Statement shall 
thereafter become effective in accordance with Section 8(a) of the 
Securities Act of 1933, as amended, or until the Registration 
Statement shall become effective on such date as the Commission 
acting pursuant to said Section 8(a), may determine.


















<PAGE>
                 SUBJECT TO COMPLETION, DATED AUGUST 6, 1998


                                 PROSPECTUS

                     MECHANICAL TECHNOLOGY INCORPORATED

              RIGHTS TO PURCHASE ________ SHARES OF COMMON STOCK

     Mechanical Technology Incorporated ("MTI" or the "Company"), at no 
charge to its stockholders, is distributing to holders of record of 
shares of its common stock, $1.00 par value per share (the "Common 
Stock"), as of the close of business on August 12, 1998 (the "Record 
Date"), non-transferable subscription rights (the "Rights") to purchase 
additional shares of Common Stock (the "Basic Subscription Privilege") at 
an exercise price of $____ per share (the "Exercise Price").  
Stockholders will receive one Right for each _____ (_) shares of Common 
Stock held on the Record Date.  Each Right will entitle its holder (a 
"Holder") to purchase one share of Common Stock (collectively the 
"Underlying Shares").  No fractional shares of Common Stock will be sold, 
and fractional interests will be rounded up.  Upon exercise of the Basic 
Subscription Privilege, a Holder will also be entitled to purchase at the 
Exercise Price a pro-rata portion of any Underlying Shares that are not 
otherwise subscribed for pursuant to the exercise of the Basic 
Subscription Privilege (the "Oversubscription Privilege"; collectively, 
with the Basic Subscription Privilege, and the sale of shares of Common 
Stock in connection therewith, the "Offering").

     First Albany Companies, Inc. ("FAC"), George C. McNamee and Alan P. 
Goldberg (the "Purchasing Shareholders") have informed the Company that 
they intend to exercise their full Basic Subscription Privilege, and may 
exercise their Oversubscripton Privilege.  The Purchasing Shareholders 
currently own 2,556,274 shares, or approximately forty-three percent 
(43%) of the outstanding Common Stock of the Company. After exercise of 
the full Basic Subscription Privilege, the Purchasing Shareholders will 
own _______ shares or approximately _____ percent (__%) of the 
outstanding Common Stock of the Company, assuming no other stockholders 
exercise their Basic Subscription Privilege.

     THE RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON  
SEPTEMBER 24, 1998, unless extended by the Company (such date, as it may 
be extended on one or more occasions, is referred to herein as the 
"Expiration Date").  In no event will the Expiration Date be extended 
beyond November 30, 1998.  If the Company elects to extend the term of 
the Rights, it will issue a press release to such effect not later than 
the first day The Nasdaq National Market is open for trading following 
the most recently announced Expiration Date.  Funds provided in payment 
of the Exercise Price will be held by the American Stock Transfer & Trust 
Company, as the Subscription Agent, until the closing, which will occur 
promptly following the Expiration Date.  The exercise of Rights is 
irrevocable once made, and no interest will be paid on funds held for 
Holders exercising their Rights.

     Since August 1994, the Company's Common Stock has been traded on the 
over-the-counter market and is listed under the symbol MKTY on the OTC 




<PAGE>
Bulletin Board.  MTI has filed a registration statement with the
Securities and Exchange Commission ("SEC") covering the shares of Common 
Stock to be issued upon exercise of the Rights.  On August 3, 1998, the 
closing bid price of the Common Stock as reported on the OTC Bulletin 
Board was $8.75 per share.

     NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY 
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS IN CONNECTION WITH
THE OFFERING MADE HEREBY, AND IF GIVEN OR MADE, SUCH INFORMATION OR 
REPRESENTATIONS MUST  NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE 
COMPANY OR BY ANY OTHER PERSON.  NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY
SALE MADE THEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT
INFORMATION HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO THE DATE HEREOF.  
THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR A SOLICITATION OF AN 
OFFER TO BUY THE SHARES TO ANY PERSON OR BY ANYONE IN ANY JURISDICTION IN WHICH 
SUCH OFFER OR SOLICITATION MAY NOT LAWFULLY BE MADE.

YOU SHOULD CAREFULLY CONSIDER THE INFORMATION REGARDING THE RISKS ASSOCIATED
WITH AN INVESTMENT IN THE COMMON STOCK OF MECHANICAL TECHNOLOGY INCORPORATED 
THAT ARE DISCUSSED UNDER THE CAPTION "RISK FACTORS" BEGINNING ON PAGE 12.

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

INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A 
REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE 
SECURITIES AND EXCHANGE COMMISSION.  THESE SECURITIES MAY NOT BE SOLD NOR MAY 
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES 
EFFECTIVE.  THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE 
SOLICITATION OF ANY OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR 
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY STATE.

    ----------------------------------------------------------------------
    |                      | EXERCISE AND OFFER  |  PROCEEDS TO THE      |
    |                      | PRICE               |  COMPANY(1)           |
    ----------------------------------------------------------------------
    | Per Share            | $                   |  Max. $               |
    ----------------------------------------------------------------------
    | Total                | $6,000,000          |  Max. $               |
    ----------------------------------------------------------------------

  (1)    Includes deduction of an estimated $163,770 in expenses, 
         including legal, accounting, investment advisor and 
         distribution expenses.











<PAGE>
                 THE DATE OF THIS PROSPECTUS IS AUGUST 6, 1998.


                             PROSPECTUS SUMMARY

     The following summary should be read in conjunction with, and is 
qualified in its entirety by, the more detailed information and 
consolidated financial statements, including the related notes, appearing 
elsewhere and incorporated by reference herein.

                                THE COMPANY

     During the last two and a half years, MTI has undergone significant 
change.  In May 1996, First Albany Companies, Inc. ("FAC") acquired a 
substantial interest in MTI and led a series of financial and strategic 
transactions that have significantly changed MTI's operations and fiscal 
well-being.  In July 1996, MTI received an infusion of capital through a 
private placement of its Common Stock.  In December 1996, MTI and FAC 
succeeded in restructuring a significant outstanding debt of the Company 
by swapping the debt for Common Stock.  This allowed the Company to 
receive an unqualified opinion in 1996 from its Independent Auditors, 
Coopers & Lybrand, L.L.P., for the first time since 1992. On June 27, 
1997, the Company transferred a portion of the Technology Division to 
Plug Power, L.L.C. ("Plug Power") to form a joint venture between the 
Company and Edison Development Corp. ("EDC").  Plug Power has focused 
exclusively on the research and development of an economically viable 
Proton Exchange Membrane ("PEM") fuel cell.  On September 30, 1997, the 
Company sold all of the assets of its L.A.B. Division to Noonan Machine 
Company of Franklin Park, Illinois.  The proceeds from this sale were 
used to pay down outstanding debt and build working capital.  On March 
31, 1998, the Company sold the remainder of its Technology Division to a 
subsidiary of Foster-Miller, Inc., a Waltham, Massachusetts-based 
technology company.  These divestitures have enabled the Company to 
better focus on its profitable test and measurement business.

     Today, MTI is a very different Company, substantially streamlined in 
focus, but with many challenges remaining.  MTI is a manufacturer of 
advanced test and measurements products that combine precision sensing 
capabilities with proprietary software and systems to serve a variety of 
applications for commercial and military customers.  The Company has two 
principal business units: the Advanced Products Division ("Advanced 
Products"), which produces sensing instruments and computer-based 
balancing systems, and Ling Electronics, Inc. ("Ling"), a developer and 
manufacturer of vibration test systems and power conversion products.  
MTI is also a member of Plug Power, which hopes to be the first 
commercial manufacturer of PEM fuel cells for residential and other 
applications.  












<PAGE>
     Advanced Products has two general product families: non-contact 
sensing instrumentation and computer-based balancing systems.  The non-
contact sensing instrumentation products utilize fiber optic, laser and 
capacitance technology to perform high precision position measurements 
for product design and quality control inspection requirements, primarily 
in the semiconductor and computer disk drive industries.  Some of these 
products bear the trademarks FOTONIC and ACCUMEASURE, which are 
recognized in the industry worldwide.  Advanced Products's computer-based 
aircraft engine balancing systems include an on-wing jet engine balancing 
system used by both commercial and military aircraft fleet maintenance 
personnel.  This product provides trim balancing and vibration analysis 
in the field or in test cells.

     Ling, of Anaheim, California, designs, manufactures, and markets 
electro-dynamic vibration test systems, high-intensity-sound transducers, 
power conversion equipment and power amplifiers used to perform 
reliability testing and stress screening during product development and 
quality control. This mode of testing is used by industry and the 
military to reveal design and manufacturing flaws in a broad range of 
precision products, from satellite parts to computer components.  Recent 
Ling products for power and frequency conversion and "clean power" 
applications include systems capable of output up to 432 kVA.

     The Company believes that the test and measurement industry will 
undergo substantial consolidation in the near future.  The challenges 
facing MTI today are similar to those facing other smaller companies in 
industries where consolidation is a part of the landscape.  The Company 
believes that consolidation may become a competitive necessity and that 
Advanced Products and Ling are well-positioned to combine with 
complementary, synergistic businesses to enhance and expand product 
offerings and increase profitability and market position.  Accordingly, 
the Company is actively exploring strategic acquisitions and alliances 
for these business units.

     Mechanical Technology Incorporated was incorporated in New York in 
1961.  Unless the context otherwise requires, "registrant", "Company" and 
"MTI" refer to Mechanical Technology Incorporated and its subsidiaries. 
The Company's principal executive offices are located at 968 Albany-
Shaker Road, Latham, New York 12110 and its telephone number is (518) 
785-2211.

                             RECENT DEVELOPMENTS

     On July 31, 1998, Plug Power asked the Company and EDC to each 
commit to contribute an additional $5 million dollars (in cash and 
research credits) between August 5, 1998 and March 31, 1999.  Such 
contributions, if made, will increase the Company's total contributions 
to Plug Power (including contributions of cash, assets, research credits, 
and a below market lease) to $11.75 million over the period commencing on 
June 27, 1997, and ending on March 31, 1999.  In addition, unless the 
Company exercises its option to match EDC's previous contributions of 








<PAGE>
$250,000 in April 1999, and $2 million in May 1999, such options will
lapse.  The Company, EDC and Plug Power are currently negotiating 
whether, when and how, such additional contributions will be made.  If 
EDC and/or MTI do not contribute or lend additional funds to Plug Power, 
and no additional sources of funding can be found, Plug Power will be 
unable to continue as a going concern.  See "Risk Factors--Inability to 
Raise Sufficient Proceeds"; "Risk Factors--Plug Power-Investment in Plug 
Power"; and "Risk Factors--Plug Power-Recognition of Plug Power Losses."

     The Company, EDC and Plug Power intend to determine the form, timing 
and pricing of additional contributions or loans to Plug Power, if any, 
for the period August 1, 1998 through March 31, 1999, not later than 
September 15, 1998.  On August 5, 1998 EDC and MTI made short-term loans 
to Plug Power of $500,000 each.  If MTI, EDC and Plug Power have not 
agreed upon the terms and timing of additional contributions to Plug 
Power, if any, as of September 15, 1998, such loans will be payable on 
demand.

     On April 15, 1998, EDC contributed $2.25 million in cash to Plug 
Power.  MTI  contributed a below-market lease for office and 
manufacturing facilities in Latham, New York, valued at $2 million and 
purchased a one year option to match EDC's remaining $250,000 
contribution.  In May 1998, EDC contributed an additional $2 million to 
Plug Power and MTI purchased a one year option to match the contribution. 
MTI's options mature in April 1999 ($250,000) and May 1999 ($2 million). 
See "Risk Factors--Plug Power-Investment in Plug Power" and "Risk 
Factors--Plug Power-Recognition of Plug Power Losses."

     Plug Power anticipates that it will continue to need substantial 
capital investment for the foreseeable future. Plug Power is currently 
negotiating with several strategic partners and has signed a preliminary 
memorandum of understanding with one potential strategic partner. There 
is no assurance, however, that Plug Power will  successfully conclude any 
transactions with strategic partners or find other sources of capital. If 
other sources of funding cannot be found, MTI will be faced with 
contributing and/or lending additional capital to Plug Power or dilution 
of its interest in Plug Power.  If EDC and the Company stop funding Plug 
Power and no additional sources of capital are found, Plug Power will not 
be able to continue as a going concern. See "Risk Factors--Inability to 
Raise Sufficient Proceeds"; "Risk Factors--Plug Power-Investment in Plug 
Power" and "Risk Factors--Plug Power-Recognition of Plug Power Losses."

     On July 15, 1998, the Company received a commitment from KeyBank 
National Association ("KeyBank") to lend the Company $4 million in a 
working capital line of credit at an interest rate of LIBOR plus 250 
basis points, and $1 million in an equipment loan/lease line of credit at 
an interest rate of LIBOR plus 275 basis points, both of which expire 
January 31, 2000.  Additionally, KeyBank has agreed to issue a $6 million 
direct pay letter of credit to enhance the $6 million Industrial 
Development Revenue  Bonds ("IDR Bonds") to be issued on the Company's 
behalf  on or about August 30, 1998.  The loan commitment requires the 
Company to meet certain covenants, including a fixed charge coverage and 
leverage ratio.  Further, if certain performance standards are achieved, 






<PAGE>
the interest rates on the debt may be reduced.  The commitment letter
also requires the Company to grant a first lien on all consolidated 
assets of the Company exclusive of Plug Power, a first mortgage on all 
land and buildings owned by the Company and a first lien on any equipment 
purchased by the Company.  See "Risk Factors--Need for Immediate 
Financing."

     The Industrial Development Agency for the Town of  Colonie("IDA") 
has agreed to issue $6 million in IDR Bonds on behalf of the Company to 
assist in the construction of a new building for Advanced Products and 
MTI's corporate staff and renovation of existing buildings to be leased 
to Plug Power (the "Project"). The Project is due to be completed as of 
December 1998.  The IDA will issue Industrial Development Revenue Notes 
to FAC, which will underwrite the sale of the IDR Bonds to the public. 
The bond proceeds will be deposited with a trustee for the bondholders. 
MTI may draw down on the bond proceeds to cover qualified Project costs. 
The bond closing is expected to be completed on or about August 30, 1998. 
FAC will receive no fees for underwriting the IDR Bonds, but will be 
reimbursed for its out of pocket costs.   See "Risk Factors--Immediate 
Need for Financing" and "Risk Factors--Conflict of Interest."







































<PAGE>
                                THE OFFERING


Description of the      If you hold MTI Common Stock on August 12, 1998,
Offering                you will receive one non-transferable right
                        to purchase MTI Common Stock for every
                        ___ (_) shares of MTI Common Stock you own.
                        Fractional Rights will be rounded up to the
                        next whole number in determining the number 
                        of Rights to be issued to stockholders.  Each 
                        right entitles you to purchase one share of 
                        MTI's Common Stock at a purchase price of $____ 
                        ("Exercise Price").  MTI is offering _______ 
                        shares of Common Stock for purchase through the 
                        exercise of Rights ("Underlying Shares").  
                        See "Offering--The Rights.

Basic Subscription      Holders are entitled to purchase, at the
Privilege               Exercise Price, one share of Common Stock
                        for each Right held.  See "Offering--The 
                        Rights", "Offering--Subscription Privileges-
                        Basic Subscription Privilege" and 
                        "Offering--No Revocation.
 
Oversubscription        Each Holder who elects to exercise his or her
Privilege               Basic Subscription Privilege may also
                        subscribe at the Exercise Price for 
                        Underlying Shares, if any, remaining unissued 
                        after satisfaction of all subscriptions 
                        pursuant to the Basic Subscription Privilege. 
                        If an insufficient number of Underlying 
                        Shares is available to satisfy fully all 
                        elections to exercise the Oversubscription 
                        Privilege, the available Underlying Shares will 
                        be allocated on a pro-rata basis among Holders 
                        who exercise their Oversubscription 
                        Privilege based on the respective numbers of 
                        Underlying shares subscribed for by 
                        such Holders pursuant to the Basic Subscription 
                        "Offering--Subscription Privileges-
                        Oversubscripton Privilege" and "Offering--No 
                        Revocation

















<PAGE>
Commitments to Exercise First Albany Companies, Inc. ("FAC"), George C.
of Subscription         McNamee and Alan P.Goldberg (the "Purchasing 
                        Shareholders") have agreed to exercise their 
                        full Subscription Privilege and may exercise their 
                        Oversubscription Privilege. The Purchasing Shareholders
                        currently own 2,556,274 shares, or approximately
                        forty-three percent (43%) of the outstanding 
                        Common Stock of the Company.  After exercise 
                        of the full Basic Subscription Privilege, 
                        the Purchasing Shareholders will own 
                        _________ shares or approximately 
                        ___________ percent (__%) of the outstanding 
                        Common Stock of the Company, assuming no 
                        other stockholders exercise their Basic 
                        Subscription Privilege

Exercise Price          If you wish to exercise your Rights to purchase
                        Common Stock, the Exercise Price will be
                        $____ per share of Common Stock.  See "Risk 
                        Factors--Determination of Exercise Price" and 
                        "Determination of Exercise Price.
 
When You Can Exercise   The Rights will only be exercisable from the
Your Rights             period beginning on August 13, 1998, and
                        ending on September 24, 1998 at 5:00 p.m., New 
                        York City time, unless extended by the Company 
                        from time to time.  See "Offering--Expiration 
                        Date.
 
Number of Shares of     _______ shares.
Common Stock Offered in 
the Offering

Record Date             August 12, 1998

























<PAGE>
Expiration Date         September 24, 1998, unless extended by the
                        Company from time to time, provided that the 
                        Expiration Date shall not be later than 
                        November 30, 1998, unless the Board of 
                        Directors determines that a material event 
                        has occurred that necessitates one or more 
                        further extensions of the Rights to permit 
                        adequate disclosure of information concerning 
                        such event to Holders. If the Company elects to 
                        extend the term of the Rights, it will issue a 
                        press release to such effect not later than 
                        the first day on which The Nasdaq National 
                        Market is open for trading following the 
                        most recently announced Expiration Date.  In the 
                        event the Company elects to extend the term of 
                        the Offering by more than 14 calendar days, 
                        it will, in addition, cause written notice of 
                        such extension to be sent promptly  to all 
                        Holders of record on the Record Date.  See 
                        "Offering--Expiration Date.

Procedure for           Rights may be exercised by properly completing
Exercising Rights       the certificate evidencing such Rights
                        (the "Subscription Certificate") and 
                        forwarding such Subscription Certificate 
                        (or following the Guaranteed Delivery 
                        Procedures, as defined below) to the 
                        Subscription Agent on or prior to the Expiration 
                        Date, together with payment in full of the 
                        Exercise Price for each Underlying Share 
                        subscribed for pursuant to the Subscription 
                        Privileges.  If the mail is used to forward 
                        Subscription Certificates and/or payment, insured,
                        registered mail should be used.  The exercise 
                        of a Right may not be revoked or amended. If
                        time does not permit a Holder of a Right to 
                        deliver its Subscription Certificate to the 
                        Subscription Agent on or before the Expiration 
                        Date, such Holder should make use of the 
                        Guaranteed Delivery Procedures described 
                        under "Offering--Exercise of Rights." 
                        Please note that funds paid by uncertified 
                        personal check may take at least five business 
                        days to 















<PAGE>
                        clear.  Accordingly, Holders who wish to pay 
                        the Exercise Price by means of uncertified 
                        personal check should make payment 
                        sufficiently in advance of the Expiration Date 
                        to ensure that such payment is received and 
                        clears by such date.  Holders should consider 
                        payment by means of certified or cashier's 
                        check, money order or wire transfer of funds. 
                        See "Offering--Exercise of Rights" and 
                        "Offering--Over/Underpayment of Exercise Price."

Persons Holding Shares, Persons holding shares of Common Stock and
or Wishing to Exercise  receiving the Rights distributable with 
Rights Through Others   respect to such shares through a broker,
                        dealer, commercial bank, trust company or other 
                        nominee, as well as persons holding 
                        certificates of Common Stock personally who 
                        would prefer to have such institutions effect 
                        transactions relating to the Rights on their 
                        behalf, should give timely instructions to 
                        their broker, dealer, commercial bank, trust 
                        company or other nominee and request it to effect 
                        the transactions for them.  See  "Offering--
                        Exercise of Rights" and "Offering--Exercise of 
                        Rights Through Third Parties."

Closing and Issuance of The closing will occur and certificates 
Common Stock            representing Underlying Shares will be delivered
                        to subscribers as soon as practical after the 
                        Expiration Date and after all prorations 
                        have been effected.  See "Offering--Subscription 
                        Privileges" and "Offering--Delivery of  
                        Subscription Certificates."  No Underlying Shares will
                        be issued until the closing.  Funds delivered to the
                        Subscription Agent for the exercise of Subscription
                        Privileges will be held in escrow by the Subscription
                        Agent until the closing.  No interest will be 
                        paid to Holders on funds held by the Subscription 
                        Agent.  In the case of Holders exercising 
                        Oversubscription Privileges, any excess 
                        funds will be returned to the Holders as soon 
                        as practical following the closing.


 














<PAGE>
Common Stock to be      After this Offering, assuming all Rights are
Outstanding After the   subscribed for, _________ shares of
Offering                Common Stock will be outstanding (not 
                        including 249,865 shares issuable upon the 
                        exercise of outstanding stock options at a 
                        weighted average exercise price of $3.42 
                        per share, of which options to purchase 
                        99,365 shares of Common were exercisable as of 
                        August 6, 1998)
 
How We Intend to Use    It is anticipated that the net proceeds to the
the Proceeds            Company will be approximately $6 million 
                        if all of the Underlying Shares are purchased in 
                        the Offering.  If less than all of the 
                        Underlying Shares are purchased, the proceeds 
                        will be correspondingly reduced.  See "Risk 
                        Factors-- Inability to Raise Sufficient 
                        Proceeds." The net proceeds from this 
                        Offering will be used for further investment 
                        into or loans to Plug Power. See "Recent 
                        Developments"; "Risk Factors--Plug Power-
                        Investment in Plug Power"; "Risk Factors--
                        Plug Power-Recognition of Plug Power Losses."  
                        The Company may also use the proceeds of the 
                        Offering for acquisitions, efforts to 
                        increase market share, working capital, general 
                        corporate purposes and other capital 
                        expenditures.  See "Risk Factors--Discretion in 
                        Application of Proceeds" and "Use of Proceeds.
 
Subscription Agent      American Stock Transfer & Trust Company.  See 
                        "Offering--Subscription Agent."



























<PAGE>
               STATEMENT CONCERNING FORWARD LOOKING STATEMENTS 

     Statements in this Prospectus or in documents incorporated herein by 
reference that are not statements of historical fact constitute "forward-
looking statements" within the meaning of the Private Securities Litigation 
Reform Act of 1995, including statements regarding future revenues, expenses 
and profits.  These forward looking statements are subject to known and unknown 
risks, uncertainties or other factors that may cause the actual results of the 
Company to be materially different from the historical results or from any 
results expressed or implied by the forward looking statements.  Such risks and 
factors include, but are not limited to, those discussed below under "Risk 
Factors" and "Management's Discussion and Analysis of Results of Operations and 
Financial Condition" in MTI's Form 10-Q for the quarter ended June 26, 1998, 
attached hereto as Exhibit 13.2.  All cautionary statements made in this 
Prospectus should be read as being applicable to all related forward-looking 
statements wherever they appear.

                                 RISK FACTORS
 
     An investment in the Common Stock being offered by this Prospectus 
involves a high degree of risk.  In addition to the other information contained 
in this Prospectus or incorporated herein by reference, prospective investors 
should carefully consider the following risk factors before purchasing the 
Common Stock offered by this Prospectus.

Plug Power
     Investment in Plug Power
     On July 31, 1998, Plug Power requested contributions or loans of $10 
million from EDC and MTI to fund continuing operations for the period August 1, 
1998 through March 31, 1999.  Thus far, EDC and MTI have already contributed 
$16 million in cash and other assets to Plug Power since June 27, 1997.  There 
is no assurance the $10 million requested will fully fund Plug Power's 
operations through March 1999.  Further, even if the $10 million is sufficient 
to fund Plug Power through March 1999, the Company believes that Plug Power 
will continue to need substantial additional capital investment thereafter 
until it can profitably sell PEM fuel cells to the public.  There is no 
assurance when, if ever, such sales will be made.  If EDC and MTI stop funding 
Plug Power, and no other sources of capital are found, Plug Power will be 
unable to continue as a going concern.  If EDC and other investors fund Plug 
Power, MTI's interest in Plug Power will suffer substantial dilution unless MTI 
is able and willing to match such contributions.

     Recognition of Plug Power Losses
     MTI has recorded its proportionate share of Plug Power's losses only to 
the extent of MTI's recorded investment in Plug Power, which has been written 
down to zero as of March 28, 1998.  Future investments into or loans to Plug 
Power may result in the Company's recognition of losses to the full extent of 
such investment or loans.  Recording of its proportionate share of Plug Power 
losses will likely result in the Company reporting significant losses in the 
future, which is likely to have a substantial adverse impact on the market 
price for the Company's Common Stock.








<PAGE>
     Plug Power Research and Development
     Plug Power is engaged in the research and development of an economically 
viable PEM fuel cell.  Plug Power faces intense competition from a number of 
companies, including at least one competitor that is significantly larger with 
significantly greater resources. Substantial research and development on the 
PEM fuel cell remains to be completed.  There is no assurance that Plug Power 
will ever successfully complete such research and development and if they do, 
that their competitors will not do so more quickly or more effectively.   
Further, there can be no assurance that any product that Plug Power may 
ultimately produce will find a market.  

     History of Plug Power Losses
     Since its inception on June 27, 1997, Plug Power has incurred substantial 
losses as follows:               
                                                                       (000's)
     For the period June 27, 1997 (inception) to September 30, 1997    $  630
     For the nine months ended June 26, 1998                           $6,019
    
     Plug Power will continue to sustain significant losses until it can 
produce sufficient revenues to cover its costs.  MTI expects that such revenues 
will not be generated until it cost-effectively produces and sells PEM fuel 
cells to the public.  There can be no assurance as to when, or if Plug Power 
may ever sell PEM fuel cells to the public on a profitable basis.

Discretion in Application of Proceeds
     The Company intends to use some, if not all, of the proceeds of the 
Offering for further investments into or loans to Plug Power. The Company may 
also use the proceeds of the Offering for acquisitions, efforts to increase 
market share, working capital, general corporate purposes and other capital 
expenditures. The specific uses of the proceeds will be at the complete 
discretion of the Company and may be allocated from time to time based on a 
variety of circumstances.  There can be no assurance that the Company will 
deploy the proceeds in a manner that will enhance the financial condition of 
the Company.

Inability to Raise Sufficient Proceeds
     There is no assurance that the Company will raise the full amount of funds 
sought through this Offering.  Failure to raise sufficient funds through this 
Offering will severely limit the Company's ability to make further investments 
into or loans to Plug Power or to make acquisitions or otherwise increase the 
market share of its core businesses.

Immediate Need for Financing
     On July 15, 1998, the Company received a letter of commitment from KeyBank 
whereby KeyBank agreed to provide a $4 million working capital line of credit 
and a $1 million equipment loan/lease line, both of which will expire January 
31, 2000.  Additionally, KeyBank has agreed to issue a $6 million direct pay 
letter of credit to enhance the $6 million IDR Bonds to be issued on the 
Company's behalf on or about August 30, 1998.  There can be no assurance that 
the Company and KeyBank will come to terms on the final agreements contemplated 
by the commitment letter, or that the terms of such financing will be favorable 
to the  Company.  There is also no assurance that the Company will be able to 
sell the $6 million in IDR Bonds to the public.  If the Company cannot obtain 
the financing described above, the failure to do so will have a material 
adverse effect on the Company's business and operating results.  




<PAGE>
Conflict of Interest
     George McNamee is Chairman of the Board of Directors of each of FAC, MTI 
and Plug Power, and is also Chief Executive Officer of MTI and Co-Chief 
Executive Officer of FAC.  Beno Sternlicht and Walter Robb are members of the 
Board of Directors of MTI and Plug Power.  Alan Goldberg is a member of the 
Board of Directors of FAC and MTI and Co-Chief Executive Officer of FAC.  FAC 
owns 34% of the outstanding Common Stock of MTI.  These interrelationships 
create the potential for conflicts of interest to arise in connection with the 
exercise by MTI's directors of their respective fiduciary duties.

Discontinued Operations; Change in Strategy
     Since 1996, MTI has shifted its focus from research and development to 
product development, marketing and sales.  With the sale of the remainder of 
the Technology Division to a subsidiary of Foster-Miller, Inc. in March 1998 
(see Note 4, "Discontinued Operations" in MTI's Form 10-Q for the quarter ended 
March 27, 1998, attached hereto as Exhibit 13.1), MTI has completed its planned 
sale of non-core businesses and is now prepared to explore strategic 
acquisitions and alliances for its two core businesses, Advanced Products and 
Ling.   There can be no assurance that any acquisitions or strategic alliances 
will be made, or if such acquisitions or alliances are made that they will have 
a positive impact on the Company's business and results of operations in the 
short or long term.

Dilution; Discount from Market Price
     Holders who do not exercise their Subscription Privileges in full will 
realize a dilution in their percentage voting interest and ownership interest 
in future net earnings, if any, of the Company to the extent that Rights are 
exercised by other Holders.  The Exercise Price represents a ____% discount 
from the closing bid price of the Common Stock on ________, 1998 and could 
result in a reduction in the market price for the Common Stock.

Substantial Immediate Dilution  
     Assuming all Underlying Shares are subscribed for in connection with this 
Offering, a purchaser of Common Stock in this Offering will experience 
immediate and substantial dilution of approximately $____ in value per share 
because the Exercise Price of the  Common Stock ($____) exceeds the $____ pro-
forma net tangible book value per share at June 26, 1998 of the Company's 
Common Stock after giving effect to the Offering.

Determination of Exercise Price
     The Exercise Price of the Common Stock was determined by the Board of 
Directors upon the advice of the independent Consulting and Investment Banking 
firm of Schwartz Heslin Group, Inc.  The Exercise Price does not necessarily 
bear any relationship to the prices at which shares of Common Stock have traded 
in the market or in private transactions, or to the Company's earnings, assets, 
book value, financial condition or any other recognized criterion of value. 
There can be no assurance that the value of the Common Stock will not decline 
below the Exercise Price.

Attraction and Retention of Technical Employees
     The Company believes that its future success will depend in large part 
upon its ability to attract, retain and motivate highly skilled employees, 
particularly technical employees.  These employees are likely to remain in 
limited supply for the foreseeable future.  There can be no assurance that the 
Company will be able to attract and retain sufficient numbers of highly skilled 




<PAGE>
technical employees.  The loss of a significant number of the Company's
technical employees could have a material adverse effect on the Company.

Competition
     The Company faces intense competition from at least several companies, 
many of which are larger than MTI and have greater financial resources.  While 
Advanced Products and Ling each have a major share of their respective markets, 
the Company does not consider either of them to be dominant within its 
industry.  The primary competitive considerations in the Company's businesses 
are: product quality and performance; price; and timely delivery.  These 
competitive pressures have restrained, and can be expected in the future to 
restrain the growth and profitability of the Company's businesses, which could 
have a material adverse effect on the value of the Common Stock.

Economic Events in Asia
     The Company's operations may be affected by unfavorable financial and 
economic conditions in Asia, which are outside of the control of the Company.  
Recent economic events in Asia have had a material adverse effect on currency 
fluctuations and spending in such areas.  The Company's operating results may 
be adversely affected by such crises due to the potential for significant 
decreases in demand for the Company's products and services, the potential for 
foreign governments to implement prohibitions and limitations on U.S. 
companies, and the potential for foreign currency losses. Such events could 
have an adverse effect on the market value of the Common Stock.

Additional Capital Requirements
     Management expects that Plug Power will continue to need substantial, 
additional funding and the future growth and development of the Company's 
business will require additional capital.  There can be no assurance that the 
Company will be able to obtain additional capital when necessary, or that the 
terms on which any capital investment can be obtained will be favorable to the 
Company.  If the Company cannot obtain capital on satisfactory terms, the 
failure to obtain such financing will limit the Company's ability to make 
investments in or loans to Plug Power and will have a material adverse effect 
on the Company's business and operating results.

Control by Existing Holders of Common Stock  
     The members of the Company's present Board of Directors directly or 
indirectly own more than 48% of the Company's outstanding Common Stock.  As a 
result, it is unlikely that investors who purchase the shares of Common Stock 
offered hereby will be able to obtain representation on the Company's Board of 
Directors (unless they first obtain the support of the shareholders on the 
existing Board), or otherwise exercise any control or influence over the 
Company's management.  Furthermore, the substantial shareholdings by members of 
the present Board of Directors make it unlikely that an independent third party 
could effect a change in control of the Company without the consent of the 
Board, thereby effectively insulating the Company's Board of Directors and 
management from objections and challenges by shareholders to actions taken by 
the Board and management in the conduct of the Company's business and the 
formulation of its business objectives, strategies and policies.  This could 
have an adverse effect on the market value of the Common Stock.








<PAGE>
No Assurance of Public Market for Common Stock  
     In August 1994, the Company was removed from The Nasdaq National Market 
System and commenced trading on the OTC Bulletin Board.  The Company intends to 
apply for re-listing on The Nasdaq National Market System shortly after the end 
of its fiscal year.  There can be no assurance that MTI's Common Stock will be 
re-listed or that there will be an active trading market for the Company's 
Common Stock.  In addition, the trading price of the Common Stock has been, and 
in the future could be, subject to significant fluctuations in response to 
variations in quarterly operating results, the gain or loss of significant 
contracts, changes in management, new products or services by the Company or 
its competitors, general trends in the industry, announcements by Plug Power 
and other events or factors.  In addition, the stock market has experienced 
extreme price and volume fluctuations that have particularly affected the 
market price for many companies in similar industries and that have often been 
unrelated to the operating performance of these companies.  These broad market 
fluctuations may adversely affect the market price of the Common Stock.

Rapid Technological Change;  Dependence on New Product Introduction, Product 
Enhancements and Product Developments
     The market for many of the Company's products and services is 
characterized by rapidly changing technology and evolving industry standards.  
There is no assurance that the Company's current technology base will continue 
to address current and evolving customer needs.  The Company believes that its 
future success will depend on its ability to develop and manufacture new 
products and product enhancements and to introduce them successfully into the 
market.  Failure to do so in a timely fashion could harm the Company's 
competitive position.  The announcements or introductions of new products by 
the Company or its competitors may adversely affect the Company's operating 
results, because these announcements or introductions may cause customers to 
defer or forego ordering products from the Company's existing product lines. 
Moreover, there is no assurance the Company will have sufficient funds to 
finance product introductions, enhancements or developments.

Issuance of Additional Common Stock
     The Company has 15 million authorized shares of Common Stock, $1.00 par 
value, of which ________ shares will be issued in connection with this 
Offering, resulting in a maximum of _________ shares outstanding after 
completion of this Offering.  The Company's Board of Directors generally has 
authority, without action or vote of the stockholders, to issue all or part of 
the authorized but unissued shares.  Any such issuance could further dilute the 
percentage ownership interest of shareholders and may further dilute the book 
value of the Common Stock. 

Year 2000 Compliance
     Currently, there is significant uncertainty regarding the impact of the 
year 2000 on software installed in certain products by the Company.  Current 
versions of the Company's products are designed to be "Year 2000" compliant.  
The Company is in the process of determining the impact of any non-compliance 
of previously installed products or purchased software and related products on 
the Company and its customers and suppliers.  The Company does not currently 
believe that the effects of any potential Year 2000 non-compliance in the 
Company's products will result in any material adverse impact on the Company's 
business or financial condition.  There can be no assurance, however, that the 
Company will not be exposed to potential claims resulting from system problems 
associated with the arrival of the Year 2000.




<PAGE>
No Cash Dividends
     Since its inception, the Company has not paid any cash dividends on its 
Common Stock.  The Company anticipates that its future earnings, if any, will 
be retained for use in the business or for other corporate purposes, and it is 
not anticipated that any cash dividends on the Common Stock will be paid in the 
foreseeable future.

     In addition to the matters discussed above, prospective investors should 
consult their own attorneys, accountants and other professional advisors as to 
legal, tax and related matters concerning their prospective investment in the 
Company's Common Stock.



                    SUMMARY CONSOLIDATED FINANCIAL INFORMATION

     Set forth below is summary consolidated financial information (restated for
the discontinuance of the Technology Division as of December 26, 1997) and 
certain adjusted financial information of the Company.  The consolidated 
financial information as of and for the five years ended September 30, 1997 set 
forth below has been derived from consolidated financial statements audited by 
PricewaterhouseCoopers LLP, independent public accountants.  The consolidated 
financial data as of and for the nine months ended June 26, 1998 and June 27, 
1997 has been derived from unaudited consolidated financial statements which, 
in the opinion of management, reflect all adjustments (consisting only of 
normal recurring accruals) necessary for a fair presentation of the financial 
data for such periods.  The following information should be read in conjunction 
with "Management's Discussion and Analysis of Results of Operations and 
Financial Condition" and the Company's consolidated financial statements and 
the accompanying notes set forth in the Company's Form 10-Q for the quarter 
ended June 26, 1998, attached hereto as Exhibit 13.2




























<PAGE>
<TABLE>
                                   Nine Months
                               Ended June 26 and 27             Years Ended September 30,  (Restated)
                               ---------------------   --------------------------------------------------------
                                    (unaudited)                               (audited)
<S>                           <C>         <C>         <C>         <C>         <C>         <C>         <C>
                                          (Restated)
                                  1998       1997        1997        1996        1995        1994        1993
                                 ------     ------      ------      ------      ------      ------      ------
Statement of Earnings Data:                    (in thousands, except per share data)

Net Sales..................     $16,016     $18,215     $24,102     $22,755     $18,140     $29,721     $28,395 

Gross Profit...............       7,013       7,245       9,628       8,830       6,145      11,800      11,321

Operating Income (Loss)....       1,814       1,335       1,593       1,069      (2,167)      2,157       3,021

Gain on sale of 
subsidiary/division or    
building...................           -           -       2,012         750       6,779       1,856           -

Income from Continuing           
Operations Before 
Extraordinary Item and 
Income Taxes...............       1,734       1,161       2,701         673       3,352         816       1,840

Income  from Continuing        
Operations before 
Extraordinary Item.........       1,734       1,065       2,558         598       3,256         201       1,492

Extraordinary Item - Gain on 
Extinguishment of Debt, net
of taxes ($106)............           -       2,507       2,507           -           -           -           -

Income from Continuing 	    
Operations.................       1,734       3,572       5,065         598       3,256         201       1,492

Income (Loss) from 
Discontinued Operations,     
Net of Taxes...............      (2,285)(2)    (198)       (545)      3,150        (334)    (24,579)(1)    (436)

Net (Loss) Income..........        (551)      3,374       4,520       3,748       2,922     (24,378)      1,056

Diluted Earnings Per Share:(3)

Income from Continuing           
Operations before 
Extraordinary Item.........        0.28        0.19        0.45        0.15        0.91        0.05        0.42

Extraordinary Item.........           -        0.45        0.44           -           -           -           -

(Loss) Income from                   
Discontinued Operations....       (0.37)      (0.03)      (0.09)       0.81       (0.09)      (6.96)      (0.12)

Net (Loss) Income..........       (0.09)       0.61        0.80        0.96        0.82       (6.91)       0.30

Weighted Average Shares         
Outstanding and 
Equivalents................   6,133,271   5,577,386   5,670,364   3,911,952   3,559,789   3,529,881   3,527,835

Other Information:

Capital Expenditures.......         202         322         377         264         409         426         188

Depreciation and    
Amortization...............         224         181         243         233         358         460         706

Balance Sheet Data:

Working Capital (Deficit)..       6,517       6,678       7,696       7,086       2,712      (6,219)     17,326

Total Assets...............      13,108      15,111      14,003      13,481      13,444      23,971      41,680

Total Long Term Debt.......           0         856           0       5,508       6,960      11,182      13,082

Total Shareholders' Equity        
(Deficit)..................       7,886       7,070       8,213       2,164      (3,490)     (6,418)     17,969

</TABLE>
(1) Includes a net charge of $15,415,000 related to the discontinuance of the
    Company's United Telecontrol Electronics, Inc. subsidiary.
(2) Includes a net charge of $1,769,000 related to the discontinuance of the
    Company's Technology Division.
(3) Earnings per share have been restated to comply with SFAS No. 128,
    "Earnings Per Share."


































<PAGE>
                               USE OF PROCEEDS

     The net proceeds from the Offering are estimated to be approximately $6 
million after the payment of expenses associated with the Offering, assuming
the Offering is fully subscribed. See "Risk Factors--Inability to Raise
Sufficient Proceeds." The Company intends to use some, if not all, of the
proceeds of the Offering for further investments into or loans to Plug Power.
The Company may also use the proceeds of the Offering for acquisitions, efforts
to increase market share, working capital, general corporate purposes and other
capital expenditures. See "Recent Developments"; "Risk Factors--Discretion in
Application of Proceeds." Although the Company intends to pursue acquisitions
actively, it has no current contract or commitment with respect to any
particular acquisition.

                      DETERMINATION OF EXERCISE PRICE

     The Exercise Price was determined by the Board of Directors upon the advice
of the independent Consulting and Investment Banking firm of Schwartz Heslin
Group, Inc., which has issued a fairness opinion supporting the fairness of the
Exercise Price.  See "Risk Factors--Determination of Exercise Price."

                                  OFFERING

The Rights 
     The Company is distributing, at no cost to the record holders of its 
outstanding Common Stock as of August 12, 1998 non-transferable Rights to
purchase additional shares of Common Stock at a price of $____ per share.
The Company will distribute one non-transferable Right for each ___ (_) shares
of Common Stock held on the Record Date.  Each Right will entitle its Holder
to purchase one share of Common Stock.  The Rights will be evidenced by non-
transferable subscription certificates. An aggregate of _______ shares of
Common Stock will be sold if all Rights are exercised.  

     No fractional Rights, or cash in lieu thereof, will be issued or paid. The
number of Rights distributed to each Holder will be rounded up to the nearest
whole share in connection with the exercise of Subscription Privileges.  

Subscription Privileges 
     Basic Subscription Privilege. Each Right will entitle the Holder thereof to
receive, upon payment of the Exercise Price, one share of Common Stock.  
Certificates representing shares of Common Stock purchased pursuant to the 
Subscription Privilege will be delivered to subscribers as soon as practical
after the Expiration Date, irrespective of whether the Subscription Privilege is
exercised immediately prior to the Expiration Date or earlier.Holders exercising
their Subscription Privilege will not be shareholders of record with respect to 
the shares issuable pursuant to such Subscription Privilege until the closing, 
which it is anticipated will occur four business days after the Expiration Date.
 











<PAGE>
     Oversubscription Privilege. Subject to the allocation described below, each
Right also carries the right to subscribe, at the Exercise Price, for any 
Underlying Shares not subscribed for through the exercise of Basic Subscription 
Privileges by other Holders (the "Excess Shares").  If the Excess Shares are not
sufficient to satisfy all subscriptions made pursuant to the Oversubscription 
Privilege, such Excess Shares will be allocated pro-rata (subject to the 
elimination of fractional shares) among those Holders exercising the 
Oversubscription Privilege, in proportion, not to the number of shares requested
pursuant to the Oversubscription Privilege, but to the number of shares each 
Holder exercising the Oversubscription Privilege subscribed for pursuant to the
Basic Subscription Privilege; provided,however, that if such pro-rata allocation
results in any Holder being allocated a greater number of Excess Shares than
such Holder subscribed for pursuant to the exercise of such Holder's
Oversubscription Privilege, then such Holder will be allocated only the number
of Excess Shares for which such Holder subscribed.  The remaining Excess Shares
will be allocated among all other Holders exercising the Oversubscription
Privilege.  Only beneficial Holders who exercise the Basic Subscription
rivilege in full will be entitled to exercise the Oversubscription Privilege.
Notification of the number of shares allocated pursuant to the Oversubscription
Privilege will be delivered to subscribers as soon as practical after the
Expiration Date and after all prorations have been effected.

Expiration Date
    The Rights will expire at 5:00 p.m.,New York City time, on September 24,1998
(the "Expiration Date"), unless extended by the Company from time to time.  
Notwithstanding the foregoing, the Expiration Date in no event shall be later
than November 30, 1998, except that the Company reserves the right to extend
the exercise period on one or more occasions if the Board of Directors
determines that the occurrence of a material event necessitates an amendment
of the Registration Statement or recirculation of the Prospectus that forms a
part thereof in order to permit time for the distribution of such information.
After the Expiration Date, unexercised Rights will be null and void.  The
Company will not be obligated to honor any purported exercise of Rights
received by the Subscription Agent after the Expiration Date, regardless of
when the documents relating to such exercise were sent, except pursuant to the
Guaranteed Delivery Procedures described below.

Commitments to Exercise Rights
     FAC, George C. McNamee and Alan P. Goldberg (the "Purchasing Shareholders")
have informed the Board of Directors that they intend to exercise their full
Basic Subscription Privilege, and may exercise their Oversubscription Privilege.
The Purchasing Shareholders currently own 2,556,274 shares or approximately
forty-three percent (43%) of the outstanding Common Stock of the Company.
After exercise of the full Basic Subscription Privilege, the Purchasing
Shareholders will own _________ shares or approximately ____________ percent
(__%) of the outstanding Common Stock of the Company, assuming no other
stockholders exercise their Basic Subscription Privilege.

Exercise of Rights
     Rights may be exercised by delivering to the Subscription Agent,on or prior
to 5:00 p.m., New York City time, on the Expiration Date, the properly completed
and executed Subscription Certificate evidencing such Rights with any required
signatures, together with payment in full of the Exercise Price for each 
Underlying Share subscribed for pursuant to the Subscription Privileges (except 
as permitted pursuant to clause (iii) of the next sentence).Such payment in full




<PAGE>
must be by: (i) check or bank draft drawn upon a U.S. bank or postal money
order, payable to American Stock Transfer & Trust Company, as Subscription
Agent; (ii) wire transfer of funds to the account maintained by the
Subscription Agent for such purpose; or (iii) in such other manner as the
Company may approve in writing in the case of persons acquiring Underlying
Shares at an aggregate Exercise Price of $500,000 or more (the payment method
under (iii) being an "Approved Payment Method"), provided in each case that
the full amount of such Exercise Price is received by the Subscription Agent
in currently available funds within three Nasdaq National Market trading days
following the Expiration Date.  Payment of the Exercise Price will be deemed
to have been received by the Subscription Agent only upon (a) clearance of any
uncertified check, (b) receipt by the Subscription Agent of any certified
check or bank draft drawn upon a United States bank or of any postal money
order, (c) receipt of good funds in the Subscription Agent's account designated
above, or (d) receipt of good funds by the Subscription Agent through an
Approved Payment Method.

     If paying by uncertified personal check, please note that the funds paid
thereby may take at least five business days to clear.  Accordingly, Holders
who wish to pay the Exercise Price by means of an uncertified personal check
are urged to make payment sufficiently in advance of the Expiration Date to
ensure that such payment is received and clears by such date and are urged to
consider payment by means of certified or bank cashier's check, money order
or wire transfer of funds.

     The address to which the Subscription Certificates and payment of the
Exercise Price should be delivered is:

     American Stock Transfer & Trust Company
     40 Wall Street
     New York, New York 10005

     If a Holder wishes to exercise Rights, but time will not permit such Holder
to cause the Subscription Certificate or Subscription Certificates evidencing
such Rights to reach the Subscription Agent on or prior to the Expiration Date,
such Rights may nevertheless be exercised if all of the following conditions
(the "Guaranteed Delivery Procedures") are met:

   (i)  such Holder has caused payment in full of the Exercise Price for each
        Underlying Share being subscribed for pursuant to the Subscription 
        Privileges to be received (in the manner set forth above) by the 
        Subscription Agent on or prior to the Expiration Date;

   (ii) the Subscription Agent receives, on or prior to the Expiration Date, a 
        guaranteed notice (a "Notice of Guaranteed Delivery"), substantially in 
        the form provided with the Instructions for Subscription Certificate(the
        "Instructions") distributed with the Subscription Certificates, from an
        "Eligible Institution" (as defined in Rule 17Ad-15 under the Securities 
        Exchange Act of 1934), stating the number of Rights represented by the 
        Subscription Certificate(s) held by such exercising Holder, the number 
        of Underlying Shares being subscribed for pursuant to the Subscription 
        Privileges and guaranteeing the delivery to the Subscription Agent of
        any Subscription Certificate(s) evidencing such Rights within three
        Nasdaq National Market trading days following the date of the Notice of
        Guaranteed Delivery; and

   (iii)the properly completed Subscription Certificate(s), with any required 
        signatures, is received by the Subscription Agent within three Nasdaq 

<PAGE>
        National Market trading days following the date of the Notice of
        Guaranteed Delivery relating thereto. The Notice of Guaranteed Delivery 
        may be delivered to the Subscription Agent in the same manner as 
        Subscription Certificate(s) at the address set forth above, or may be 
        transmitted to the Subscription Agent by facsimile transmission 
        (telecopy number (718) 234-5001).  Additional copies of the form of 
        Notice of Guaranteed Delivery are available upon request from the 
        Subscription Agent, whose address and telephone number are set forth 
        under "Subscription Agent" below.

    Funds received in payment of the Exercise Price for Excess Shares subscribed
for pursuant to the Oversubscription Privilege will be held in a segregated 
account pending issuance of such Excess Shares.  If a Holder exercising the 
Oversubscription Privilege is allocated less than all of the Excess Shares that 
such Holder wished to subscribe for pursuant to the Oversubscription Privilege, 
the excess funds paid by such Holder in respect of the Exercise Price for shares
not issued shall be returned by mail without interest or deduction as soon as 
practical after the Expiration Date.

Exercise of Rights Through Third Parties
     A Holder who holds shares of Common Stock for the account of others,such as
a broker, a trustee or a depositary for securities, should notify the respective
beneficial owners of such shares as soon as possible to ascertain such
beneficial owners' intentions and to obtain timely instructions with respect
to the Rights. If the beneficial owner so instructs, the record Holder of such
Rights shall complete the Subscription Certificate and submit it to the
Subscription Agent with the proper payment.  In addition, the beneficial owner
of Common Stock or Rights held through such a Holder of record should contact
the Holder and make a timely request that the Holder effect transactions in
accordance with the beneficial owner's instructions.  

Over/Underpayment of Exercise Price
     If either the number of Underlying Shares being subscribed for pursuant
to the Basic Subscription Privilege is not specified on the Subscription
Certificate, or the amount of funds delivered is not enough to pay the Exercise
Price for all Underlying Shares stated to be subscribed for, the number of
Underlying Shares subscribed for will be assumed to be the maximum amount that
could be subscribed for upon payment of such amount.  If the number of
Underlying Shares being subscribed for is not specified, or payment of the
Exercise Price for the indicated number of Rights that are being exercised
exceeds the required Exercise Price, the payment will be applied, until
depleted, to subscribe for Underlying Shares in the following order: (i) to
subscribe for the number of Underlying Shares indicated, if any, pursuant to
the Basic Subscription Privilege; (ii) to subscribe for Underlying Shares until
the Basic Subscription Privilege has been fully exercised with respect to all
of the Rights represented by the Subscription Certificate; and (iii) to
subscribe for additional Underlying Shares pursuant to the Oversubscription
Privilege (subject to any applicable proration).

Delivery of Subscription Certificates
     The Instructions accompanying the Subscription Certificates should be read
carefully and followed in detail.  PLEASE SEND ALL SUBSCRIPTION CERTIFICATES TO
THE SUBSCRIPTION AGENT.  DO NOT SEND SUBSCRIPTION CERTIFICATES TO THE COMPANY.

     The method of delivery of subscription certificates and payment of the
Exercise Price to the Subscription Agent will be at the election and risk of the



<PAGE>
Rights Holder, but if sent by mail it is recommended that such certificates and
payments be sent by registered mail, properly insured, with return receipt 
requested, and that a sufficient number of days be allowed to ensure delivery to
the Subscription Agent and clearance of payment prior to 5:00 p.m.,New York City
time, on the Expiration Date.  Because uncertified personal checks may take at 
least five business days to clear, the Rights Holder is strongly urged to pay,or
arrange for payment, by means of certified or bank cashier's check, money order 
or wire transfer of funds.

    Any questions or requests for assistance concerning the method of exercising
Rights or requests for additional copies of this Prospectus, or the Notice of 
Guaranteed Delivery should be directed to the Subscription Agent at telephone 
number (718) 921-8200, or the Company at telephone number (518) 785-2211.

No Revocation
     Once a Rights Holder has exercised the Basic Subscription Privilege or the
Oversubscription Privilege, such exercise may not be revoked.

Subscription Agent
     The Company has appointed American Stock Transfer & Trust Company as
Subscription Agent for the Offering.  The Subscription Agent's address, which is
the address to which the Subscription Certificates and payment of the Exercise 
Price should be delivered, as well as the address to which Notice of Guaranteed 
Delivery must be delivered, and the Subscription Agent's telephone number and 
facsimile number, are:										

                American Stock Transfer & Trust Company
                40 Wall Street
                New York, NY 10005
                Telephone No. (718) 921-8200
                Telecopier No. (718) 234-5001

     The Company will pay the fees and expenses of the Subscription Agent, and
has also agreed to indemnify it from any liability that it may incur in
connection with the Offering.

                      FEDERAL INCOME TAX CONSEQUENCES
	
     Because of the complexity of the provisions of the Internal Revenue Code of
1986, as amended (the "Code") and because tax consequences may vary depending
upon the particular facts relating to each holder of MTI Common Stock, such
holders should consult their own tax advisors concerning their individual tax
situations and the tax consequences of this Offering under the Code and under
any applicable state, local or foreign tax laws.

                             PLAN OF DISTRIBUTION

     The Common Stock offered hereby is being offered by the Company pursuant to
the issuance of Rights directly to holders of shares of Common Stock on the
Record Date.  Certain employees, officers or directors of the Company may
solicit responses from Holders to the Offering, but such individuals will not
receive any commissions or compensation for such services other than their
normal employment compensation.






<PAGE>
     The Company intends to distribute Rights and copies of this Prospectus to
stockholders of record on the Record Date promptly following the Effective Date 
of the Registration Statement of which this Prospectus forms a part.

     Holders who desire to subscribe for the purchase of shares of Common Stock
in the Offering are urged to complete, date and sign the Subscription
Certificate and return it to the Subscription Agent on or before the Expiration
Date, together with payment in full for the share purchase.  See "Offering--
Exercise of Rights" and "Offering--Exercise of Rights Through Third Parties."

                 DESCRIPTION OF SECURITIES TO BE REGISTERED

     The authorized capital stock of the Company includes 15 million shares of
Common Stock, par value $1.00 per share. The Company is registering _______
shares of Common Stock in connection with the Offering. The outstanding shares
of Common Stock are fully paid and non-assessable.  Holders of Common Stock
are entitled to dividends when, as and if declared by the Board of Directors
of the Company out of any funds legally available to the Company for that
purpose.

     The Company has not paid dividends on the Common Stock and does not
anticipate doing so in the foreseeable future.

     Holders of Common Stock are entitled to one vote per share held of record
with respect to all matters submitted to a vote of the stockholders.  There is
no cumulative voting for the election of directors, who are elected for
staggered three-year terms.

     At August 3, 1998, the approximate number of Holders of record of the
Common Stock was 1,460.


                         INCORPORATION BY REFERENCE

     The following documents filed by the Company with the SEC are hereby 
incorporated by reference and are an integral part hereof: the Company's Annual 
Report on Form 10-K  for its fiscal year ended September 30, 1997; the Company's
Amended Annual Report on Form 10-K/A for its fiscal year ended September 30,
1997, as filed on January 23, 1998; the Company's Amended Annual Report on
Form 10-K/A for its fiscal year ended September 30, 1997, as filed on March 2,
1998; the Company's Quarterly Report on Form 10-Q  for its quarter ended March
27, 1998; the Company's Quarterly Report or Form 10-Q for its quarter ended
June 26, 1998; and the Company's Current Report on Form 8-K dated April 8, 1998.
Copies of the the Company's Form 10-K and 10-K/A reports for the year ended
September 30, 1997 and Form 10-Q reports for quarters ended March 27, 1998 and
June 26, 1998 accompany this Prospectus.  All documents filed by the Company
pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act, subsequent
to the date of this prospectus and prior to the termination of the Offering,
shall be deemed to be incorporated by reference in this prospectus and to be
a part hereof from the respective dates of the filing thereof. Any statement
contained in a document incorporated or deemed to be incorporated by reference
herein modifies or supersedes such statement. Any such statement so modified
or superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this prospectus.  All other documents may be obtained
from MTI at no charge by any person, including any




<PAGE>
beneficial owner, to whom a prospectus is delivered, who makes a written or oral
request for such documents.  Please address all such requests to Cynthia A.
Scheuer, Chief Financial Officer, Mechanical Technology, Inc., 968 Albany-Shaker
Road, Latham, New York 12110 ((518) 785-2211).

	
                            AVAILABLE INFORMATION

     MTI is subject to the informational requirements of the Securities Exchange
Act of 1934 (the "Exchange Act") and in accordance therewith files reports and 
other information with the SEC.  Forms 10-K, 10-K/A, 10-Q, S-8, 8-K, the Proxy 
Statement and other information filed by the Company, can be read  and copied at
the Public Reference Room of the SEC in Washington, D.C. at the address given 
below, and at certain of its Regional Offices at 1 World Trade Center, Suite
1300, New York, New York 10048 and 500 W. Madison Street, Suite 1400, Chicago,
Illinois 60661.  You may obtain information on the operation of the Public
Reference Room by calling the SEC at 1-800-SEC-0330.  Copies of such material
can be obtained from the Public Reference Section of the SEC, 450 Fifth Street,
N.W., Washington, D.C. 20549 at prescribed rates.  The SEC also maintains an
Internet site that contains reports, proxy and information statements and other
information regarding issuers that file electronically with the SEC at
http://www.sec.gov.

	
                                LEGAL MATTERS

     Certain legal matters with respect to the validity of the Rights and the
Underlying Shares have been passed upon for the Company by Whiteman Osterman &
Hanna, Albany, New York.


                                   EXPERTS

     The consolidated balance sheets as of September 30, 1997 and 1996 and the
consolidated statements of income, shareholders' equity, and cash flows for each
of the three years in the period ended September 30, 1997, incorporated by 
reference in this registration statement, have been incorporated herein in 
reliance on the report of PricewaterhouseCoopers LLP, independent accountants, 
given on the authority of that firm as experts in accounting and auditing.

     The Exercise Price was determined by the Board of Directors upon the advice
of independent Consulting and Investment Banking firm of Schwartz Heslin Group, 
Inc. Schwartz Heslin Group, Inc. has also issued a fairness opinion attesting to
the fairness of the Exercise Price.  The Company will pay fees and expenses of
Schwartz Heslin Group, Inc., and has also agreed to indemnify it from certain
liabilities it may incur in connection with the Offering.













<PAGE>
                     MECHANICAL TECHNOLOGY INCORPORATED
              Cross-Reference Sheet to Prospectus on Form S-2
            Furnished Pursuant to Item 501(b) of Regulation S-K

Item   Form S-2 Caption               Location in Prospectus           Page
- ----   ----------------               ----------------------           ----
1.     Forepart of the Registration   Outside Front Cover Page
       Statement and Outside Front
       Cover Page of Prospectus

2.     Inside Front and Outside Back  Inside Front Cover Page
       Cover Pages of Prospectus      Outside Back Cover Pages

3.     Summary Information and        Prospectus Summary; Risk Factors
       Risk Factors

4.     Use of Proceeds                Use of Proceeds

5.     Determination of Exercise      Determination of Exercise Price
       Price

6.     Dilution                       Risk Factors--Dilution; Risk Factors--
                                      Substantial Immediate Dilution

7.     Selling Securityholders        Not Applicable

8.     Plan of Distribution           Plan of Distribution

9.     Description of Securities      Description of Securities to be
       to be registered               Registered:  Risk Factors--Issuance
                                      of Additional Capital Stock; Offering

10.    Interests of Named Experts     Legal Matters; Experts
       and Counsel 

11.    Information with Respect to    Form 10-K for the fiscal year ended
       Registrant                     September 30, 1997, Form 10-K/A, filed
                                      as of January 23, 1998, Form 10K/A, filed
                                      as of March 2, 1998, Form 10-Q for the
                                      quarter ended March 27, 1998, and Form
                                      10-Q for the quarter ended June 26, 1998,
                                      appended hereto

12.    Incorporation of Certain       Incorporation of Certain
       Information by Reference       Documents by Reference; Available
                                      Information













<PAGE>
                                   PART II

                 INFORMATION NOT REQUIRED IN THE PROSPECTUS


Item 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

        SEC Registration Fee                     $   1,770
        Printing                                    12,000*
        Legal fees and Expenses                     65,000*
        Accounting Fees and Expenses                20,000*
        Pricing and Fairness Opinion and Expenses   30,000*
        Stock Transfer Fees                         35,000*
                                                  --------
                Total                             $163,770*
                                                  ========
*Estimated


Item 15.  	INDEMNIFICATION OF DIRECTORS AND OFFICERS --
          DISCLOSURE OF COMMISSION'S POSITION ON INDEMNIFICATION
 
     Under provisions of the Company's Amended and Restated Certificate of
Incorporation, the Company shall indemnify any person who was or is a party or
is threatened to be made a party to any threatened, pending or completed 
action, proceeding or suit (including one by or in the right of the Company to 
procure a judgment in its favor), whether civil or criminal, by reason of the 
fact that he, his testator or intestate is or was a director or officer of the 
Company, or is or was serving any other corporation, partnership, joint 
venture, trust, employee benefit plan or other enterprise in any capacity at 
the request of the Company, against judgments, fines, amounts paid in 
settlement and expenses, including attorneys' fees, actually incurred as a 
result of or in connection with any such action, proceeding or suit, or any 
appeal therefrom, if such director or officer acted in good faith for a purpose 
which he reasonably believed to be in or not opposed to the best interests of 
the Company, and, in criminal actions or proceedings, in addition, had no 
reasonable cause to believe that his conduct was unlawful; provided, however, 
that no indemnification shall be made to or on behalf of any director or 
officer if a judgment or other final adjudication adverse to the director or 
officer establishes that his acts were committed in bad faith or were the 
result of active and deliberate dishonesty and were material to the cause of 
action so adjudicated, or that he personally gained a financial profit or other 
advantage to which he was not legally entitled.

     Insofar as the indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors, officers or persons controlling the 
Company pursuant to the foregoing provisions, the Company has been informed 
that in the opinion of the SEC such indemnification is against public policy as 
expressed in the Securities Act of 1933 and is therefore unenforceable.

Item 16.  EXHIBIT INDEX

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





<PAGE>
Item 17.  UNDERTAKINGS

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

     The undersigned registrant hereby undertakes to deliver or cause to be 
delivered with the prospectus, to each person to whom the prospectus is sent or 
given, the latest annual report to security holders that is incorporated by 
reference in the prospectus and furnished pursuant to, and meeting the 
requirements of, Rule 14a-3 or Rule 14c-3 under the Securities Exchange Act of 
1934; and, where interim financial information required to be presented by 
Article 3 of Regulation S-X are not set forth in the prospectus, to deliver, or 
cause to be delivered to each person to whom the prospectus is sent or given, 
the latest quarterly report that is specifically incorporated by reference in 
the prospectus to provide such interim financial information.





































<PAGE>
                                  SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the registrant 
certifies that it has reasonable grounds to believe that it meets all of the 
requirements for filing on Form S-2/A and has duly caused this registration 
statement to be signed on its behalf by the undersigned, thereunto duly 
authorized, in the City of Albany, State of New York on August 6, 1998.

MECHANICAL TECHNOLOGY, INC.

By: /s/ George C. McNamee
    -----------------------------
    George C. McNamee
    Chief Executive Officer






     KNOWN ALL MEN BY THESE PRESENTS, that each person whose signature appears 
below constitutes and appoints Cynthia A. Scheuer and George C. McNamee his 
true and lawful attorneys-in-fact and agents, each acting alone, with full 
power of substitution and resubstitution, for him and in his name, place and 
stead, in any and all capacities, to sign any or all amendments to this 
Registration Statement, including post-effective amendments, and to file the 
same, with all exhibits thereto, and all documents in connection therewith, 
with the Securities and Exchange Commission, granting unto said attorneys-in-
fact and agents, and each of them, full power and authority to do and perform 
each and every act and thing requisite and necessary to be done in and about 
the premises, as fully to all intents and purposes as he might or could do in 
person, and hereby ratifies and confirms all that said attorneys-in-fact and 
agents, each acting alone, or their substitute or substitutes, may lawfully do 
or cause to be done by virtue hereof.

























<PAGE>
     Pursuant to the requirements of the Securities Act of 1933, this 
registration statement has been signed by the following persons in the 
capacities and on the dates indicated.


SIGNATURE                                          DATE

/s/ George C. McNamee                            08/06/98 
- ---------------------------------------
George C. McNamee
Chief Executive Officer and Director
(Principal Executive Officer)

/s/ Cynthia A. Scheuer                               "
- ---------------------------------------
Cynthia A. Scheuer
Chief Financial Officer (Principal
Financial and Accounting Officer)

/s/ Dale W. Church                                   "
- ---------------------------------------
Dale W. Church				
Director

/s/ Edward A. Dohring                                "
- ---------------------------------------
Edward A. Dohring				
Director

/s/ Alan P. Goldberg                                 "
- ---------------------------------------
Alan P. Goldberg				
Director

/s/ E. Dennis O'Connor                               "
- ---------------------------------------
E. Dennis O'Connor				
Director

/s/ Walter L. Robb                                   "
- ---------------------------------------
Dr. Walter L. Robb				
Director

/s/ Beno Sternlicht                                  "
- ---------------------------------------
Dr. Beno Sternlicht				
Director











<PAGE>
                                Exhibit Table


  5.1  Form of Opinion re legality
10.21  Asset Purchase Agreement between MTI and NYFM, Incorporated,
        dated as of March 31,1998 
10.22  Option Agreement-Contribution Match between Plug Power, L.L.C. 
        and MTI, dated as of April 24, 1998
10.23  Option Agreement-Contribution Match between Plug Power, L.L.C. 
        and MTI, dated as of June 15, 1998
10.24  Contribution Agreement between Edison Development Corporation 
        and MTI, dated as of June 10, 1998
10.25  Form of Notice of Guaranteed Delivery for Subscription 
        Certificate
10.26  Form of American Stock Transfer & Trust Co. Agency Agreement
10.27  Form of Instructions for Subscription Certificate
13.1   Form 10-Q Quarterly Report for the Quarter Ended March 27, 
        1998(1)
13.2   Form 10-Q Quarterly Report for the Quarter Ended June 26, 
        1998 (2)
23.1   Form of Consent of PricewaterhouseCoopers LLP
23.2   Form of Consent of Whiteman Osterman & Hanna (included in Form 
        of Opinion in Exhibit 5.1)
24     Power of Attorney (included on signature page)

___________________

Certain Exhibits were previously filed (as indicated below) and are 
incorporated by reference herein.

(1) Filed with the Securities and Exchange Commission as of May 8, 
1998. 

(2) Filed with the Securities and Exchange Commission as of August 6, 
1998.		
























<PAGE>


Exhibit No. 23.1



                       CONSENT OF INDEPENDENT ACCOUNTANTS


We consent to the incorporation by reference in the registration statement of 
Mechanical Technology Incorporated and Subsidiaries on Form S-2/A (File No. 
__________) of our report dated November 14, 1997, on our audits of the 
consolidated financial statements of Mechanical Technology Incorporated and 
Subsidiaries as of September 30, 1997 and 1996, and for the years ended 
September 30, 1997, 1996 and 1995.  We also consent to the references to our 
firm under the captions "Experts" and "Selected Financial Data."



Albany, New York                           /s/ PricewaterhouseCoopers LLP
August 6, 1998                             ------------------------------








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