SPX CORP
S-4, 1998-02-17
CUTLERY, HANDTOOLS & GENERAL HARDWARE
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 AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 17, 1998
                                                REGISTRATION NO. 333-______
================================================================================
                     SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON, D.C. 20549

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

                                  FORM S-4
                           REGISTRATION STATEMENT
                                   UNDER
                         THE SECURITIES ACT OF 1933
                      ------------------------------

                              SPX CORPORATION
           (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

           DELAWARE                       3429                   38-1016240
(STATE OR OTHER JURISDICTION       (PRIMARY STANDARD           (IRS EMPLOYER
     OF INCORPORATION OR        INDUSTRIAL CLASSIFICATION   IDENTIFICATION NO.)
         ORGANIZATION)               CODE NUMBER)

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

                          700 TERRACE POINT DRIVE
                             MUSKEGON, MI 49443
                               (616) 724-5000
            (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
     INCLUDING AREA CODE, OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                      ------------------------------

                        CHRISTOPHER J. KEARNEY, ESQ.
               VICE PRESIDENT, SECRETARY AND GENERAL COUNSEL
                              SPX CORPORATION
                          700 TERRACE POINT DRIVE
                             MUSKEGON, MI 49443
                               (616) 724-5000
             (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE
             NUMBER, INCLUDING AREA CODE, OF AGENT FOR SERVICE)
                      ------------------------------

                                 COPIES TO:
                            AVIVA DIAMANT, ESQ.
                  FRIED, FRANK, HARRIS, SHRIVER & JACOBSON
                             ONE NEW YORK PLAZA
                          NEW YORK, NEW YORK 10004
                               (212) 859-8000
                      ------------------------------

     Approximate date of commencement of proposed sale to public: As soon
as practicable after the Registration Statement becomes effective. 

     If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance
with General Instruction G, check the following box. |_|
                      ------------------------------
<TABLE>
<CAPTION>

                                              CALCULATION OF REGISTRATION FEE
===================================================================================================================
                                                             PROPOSED MAXIMUM     PROPOSED MAXIMUM      AMOUNT OF  
     TITLE OF EACH CLASS OF SECURITIES        AMOUNT TO BE    OFFERING PRICE          AGGREGATE       REGISTRATION
             TO BE REGISTERED                REGISTERED(1)       PER SHARE        OFFERING PRICE(2)       FEE(2)   
                                                                                                       
- -------------------------------------------------------------------------------------------------------------------
<S>                                           <C>                   <C>           <C>                  <C>        
    Common Stock, par value $10.00, of SPX    29,744,303            N/A           $1,593,112,523       $469,968.19
- -------------------------------------------------------------------------------------------------------------------
    Rights to Purchase Preferred Stock(3)     29,744,303            N/A                 N/A                N/A
===================================================================================================================
<FN>

(1)  Represents  63,169,129  shares of common  stock,  par value  $1.00 per
     share (the "Shares"),  of Echlin Inc. (the "Company"),  outstanding on
     December  31,  1997,  as set forth in the  Company's  Form 10-Q  dated
     November  30, 1997,  less  1,150,150  Shares owned by SPX  Corporation
     ("SPX"), multiplied by the exchange ratio of 0.4796.
(2)  Pursuant to Rules  457(f)(1) and (3) and 457(c) of the  Securities Act
     of 1933,  as  amended,  and solely for  purposes  of  calculating  the
     registration  fee, the  registration  fee was computed on the basis of
     the  average of the high and low prices of a Share as  reported on the
     New York Stock Exchange,  Inc. Composite Tape on February 9, 1998 less
     the amount of cash to be paid by SPX in connection with the exchange.
(3)  Associated  with the Common Stock of SPX are Rights to purchase Series
     A Junior Participating Preferred Stock that will not be exercisable or
     evidenced  separately from the Common Stock prior to the occurrence of
     certain events.
</FN>
</TABLE>

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

     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 WHICH  SPECIFICALLY  STATES THAT
THIS REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE
WITH SECTION 8(A) OF THE SECURITIES  ACT OF 1933 OR UNTIL THE  REGISTRATION
STATEMENT  SHALL BECOME  EFFECTIVE ON SUCH DATE AS THE  COMMISSION,  ACTING
PURSUANT TO SAID SECTION 8(A), MAY DETERMINE.

===========================================================================
[RED HERRING]

INFORMATION  CONTAINED  HEREIN IS SUBJECT TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION   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 AN 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 SUCH STATE.


               SUBJECT TO COMPLETION, DATED FEBRUARY 17, 1998

PROSPECTUS

          OFFER TO EXCHANGE EACH OUTSTANDING SHARE OF COMMON STOCK

         (INCLUDING THE ASSOCIATED PREFERRED SHARE PURCHASE RIGHTS)

                                     OF

                                ECHLIN INC.

                                    FOR

                        $12.00 NET PER SHARE IN CASH

                                    AND

                        0.4796 SHARE OF COMMON STOCK

                                     OF

                              SPX CORPORATION







- ---------------------------------------------------------------------------
THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT NEW YORK CITY
TIME ON         1998 UNLESS EXTENDED. SHARES WHICH ARE TENDERED PURSUANT TO
THE OFFER  MAY BE  WITHDRAWN  AT ANY TIME  PRIOR TO THE  EXPIRATION  OF THE
OFFER.
- ---------------------------------------------------------------------------


     SEE "RISK  FACTORS"  BEGINNING ON PAGE 25 FOR A DISCUSSION  OF CERTAIN
FACTORS THAT SHOULD BE CONSIDERED  BY HOLDERS OF SHARES IN CONNECTION  WITH
THE OFFER.

     THIS  PROSPECTUS  AND  THE  OFFER  MADE  HEREBY  DO NOT  CONSTITUTE  A
SOLICITATION  OF ANY  PROXIES.  ANY  SUCH  SOLICITATION  WILL BE MADE  ONLY
PURSUANT  TO  SEPARATE  PROXY  SOLICITATION  MATERIALS  COMPLYING  WITH THE
REQUIREMENTS OF SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934.

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

                    THE DEALER MANAGER FOR THE OFFER IS
                           CIBC OPPENHEIMER CORP.

              The date of this Prospectus is            , 1998

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

     SPX Corporation,  a Delaware corporation ("SPX"),  hereby offers, upon
the terms and subject to the conditions set forth herein and in the related
Letter of Transmittal  (collectively,  the "Offer"), to exchange the amount
of $12.00 net in cash and 0.4796  share of common  stock,  par value $10.00
per share ("SPX  Common  Stock"),  of SPX (the  "Consideration"),  for each
outstanding  share of common  stock,  par value  $1.00 per share  (each,  a
"Share" and,  collectively,  the  "Shares"),  of Echlin Inc., a Connecticut
corporation  (the   "Company")(including  the  associated  preferred  share
purchase  rights (the "Rights")  issued  pursuant to the Rights  Agreement,
dated as of June 21, 1989, as amended (the "Rights Agreement"), between the
Company and The Connecticut Bank and Trust Company, N.A., as Rights Agent),
validly  tendered  on or  prior  to the  Expiration  Date  (as  hereinafter
defined)  and not  properly  withdrawn.  The  0.4796  figure  is  sometimes
referred to herein as the "Exchange  Ratio."  Unless the context  otherwise
requires, all references to Shares shall include the associated Rights. All
references  to Rights shall  include all benefits that may inure to holders
of the Rights pursuant to the Rights Agreement.

     On February  13,  1998,  the closing  price of a Share on the New York
Stock Exchange,  Inc. (the "NYSE") Composite Tape was $38-7/8. Based on the
closing price of a share of SPX Common Stock on the NYSE  Composite Tape on
the same  date  ($75-1/16),  the  value  of the SPX  Common  Stock  offered
pursuant  to the Offer is $36.00 per Share.  The market  value of the Offer
will change as the market price of the SPX Common Stock changes.

     SPX intends, as promptly as practicable following  consummation of the
Offer,  to cause a  wholly-owned  subsidiary  of SPX to be merged  into the
Company  (the  "Merger"),  in which  each Share  then  outstanding  will be
converted  into  the  right  to  receive  the  Consideration.   Immediately
following  consummation  of the  Merger  and  after  giving  effect  to the
issuance of the SPX Common Stock in the  transaction,  the  shareholders of
the  Company  (other  than  SPX)  would own  approximately  70% of the then
outstanding shares of SPX Common Stock.

     SPX'S  OBLIGATION  TO EXCHANGE  SHARES OF SPX COMMON  STOCK FOR SHARES
PURSUANT TO THE OFFER IS CONDITIONED  UPON,  AMONG OTHER THINGS,  (A) THERE
BEING  VALIDLY  TENDERED  PRIOR  TO THE  EXPIRATION  OF THE  OFFER  AND NOT
WITHDRAWN A NUMBER OF SHARES WHICH WILL  CONSTITUTE AT LEAST 66-2/3% OF THE
TOTAL OUTSTANDING SHARES ON A FULLY DILUTED BASIS AS OF THE DATE THE SHARES
ARE ACCEPTED  FOR EXCHANGE BY SPX (THE  "MINIMUM  TENDER  CONDITION");  (B)
APPROVAL  BY THE  STOCKHOLDERS  OF SPX OF THE  ISSUANCE OF SHARES OF COMMON
STOCK OF SPX  PURSUANT  TO THE OFFER AND THE MERGER  (THE "SPX  STOCKHOLDER
APPROVAL  CONDITION");  (C) THE  REDEMPTION  OF THE  RIGHTS BY THE BOARD OF
DIRECTORS OF THE COMPANY OR SPX BEING  OTHERWISE  SATISFIED THAT THE RIGHTS
WILL NOT BE APPLICABLE  TO THE  ACQUISITION  OF THE SHARES  PURSUANT TO THE
OFFER OR THE MERGER (THE "RIGHTS PLAN CONDITION");  (D) SPX BEING SATISFIED
THAT SECTIONS 841 AND 844 OF THE CONNECTICUT  BUSINESS CORPORATION ACT (THE
"CONNECTICUT  BUSINESS  ACT") WILL NOT BE  APPLICABLE  TO THE OFFER AND THE
MERGER (THE "BUSINESS COMBINATION STATUTES CONDITION");  AND (E) SPX HAVING
OBTAINED  SUFFICIENT  FINANCING FOR THE  CONSUMMATION  OF THE OFFER AND THE
MERGER (THE "FINANCING CONDITION").  THE MINIMUM TENDER CONDITION,  THE SPX
STOCKHOLDER  APPROVAL  CONDITION,  THE RIGHTS PLAN CONDITION,  THE BUSINESS
COMBINATION  STATUTES  CONDITION,  THE  FINANCING  CONDITION  AND THE OTHER
CONDITIONS  SET  FORTH  UNDER THE  CAPTION  "THE  OFFER--CONDITIONS  OF THE
OFFER--CERTAIN  OTHER CONDITIONS OF THE OFFER" ARE REFERRED TO COLLECTIVELY
AS THE "OFFER CONDITIONS."


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

     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  PRELIMINARY
PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

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





                                 IMPORTANT


     SHAREHOLDERS  WILL BE  REQUIRED  TO TENDER  ONE  RIGHT FOR EACH  SHARE
TENDERED  IN ORDER TO EFFECT A VALID  TENDER OF  SHARES,  UNLESS THE RIGHTS
PLAN CONDITION HAS BEEN SATISFIED OR WAIVED.  UNLESS THE DISTRIBUTION  DATE
(AS  HEREINAFTER  DEFINED)  OCCURS,  A TENDER OF SHARES WILL  CONSTITUTE  A
TENDER OF THE ASSOCIATED RIGHTS.


     ANY  SHAREHOLDER  DESIRING  TO TENDER ALL OR ANY PORTION OF HIS OR HER
SHARES AND THE  ASSOCIATED  RIGHTS  SHOULD EITHER (i) COMPLETE AND SIGN THE
LETTER OF TRANSMITTAL  OR A FACSIMILE  COPY THEREOF IN ACCORDANCE  WITH THE
INSTRUCTIONS  IN THE LETTER OF  TRANSMITTAL,  MAIL OR DELIVER THE LETTER OF
TRANSMITTAL  OR SUCH  FACSIMILE  AND ANY OTHER  REQUIRED  DOCUMENTS  TO THE
EXCHANGE   AGENT  (AS   HEREINAFTER   DEFINED),   AND  EITHER  DELIVER  THE
CERTIFICATES FOR SUCH SHARES AND, IF SEPARATE,  CERTIFICATES FOR THE RIGHTS
TO THE EXCHANGE  AGENT ALONG WITH THE LETTER OF  TRANSMITTAL,  DELIVER SUCH
SHARES AND RIGHTS  PURSUANT TO THE PROCEDURES  FOR BOOK-ENTRY  TRANSFER SET
FORTH HEREIN (IN THE CASE OF RIGHTS, ONLY IF SUCH PROCEDURES ARE AVAILABLE)
OR COMPLY WITH THE GUARANTEED  DELIVERY PROCEDURES SET FORTH HEREIN OR (ii)
REQUEST HIS OR HER BROKER, DEALER,  COMMERCIAL BANK, TRUST COMPANY OR OTHER
NOMINEE TO EFFECT THE  TRANSACTION  FOR HIM OR HER.  A  SHAREHOLDER  HAVING
SHARES AND RIGHTS  REGISTERED IN THE NAME OF A BROKER,  DEALER,  COMMERCIAL
BANK,  TRUST  COMPANY OR OTHER  NOMINEE MUST  CONTACT SUCH BROKER,  DEALER,
COMMERCIAL  BANK,  TRUST  COMPANY OR OTHER  NOMINEE IF HE OR SHE DESIRES TO
TENDER SUCH SHARES AND RIGHTS.


     ANY  SHAREHOLDER  THAT  DESIRES  TO TENDER HIS OR HER SHARES AND WHOSE
CERTIFICATES FOR SUCH SHARES ARE NOT IMMEDIATELY  AVAILABLE,  OR WHO CANNOT
COMPLY WITH THE PROCEDURES FOR  BOOK-ENTRY  TRANSFER ON A TIMELY BASIS,  OR
WHO CANNOT  DELIVER ALL REQUIRED  DOCUMENTS TO THE EXCHANGE  AGENT PRIOR TO
THE EXPIRATION  DATE, MAY TENDER SUCH SHARES BY FOLLOWING THE PROCEDURE FOR
GUARANTEED DELIVERY.


     QUESTIONS  AND  REQUESTS  FOR   ASSISTANCE  MAY  BE  DIRECTED  TO  THE
INFORMATION  AGENT (AS  HEREINAFTER  DEFINED)  OR TO THE DEALER  MANAGER AT
THEIR  RESPECTIVE  ADDRESSES  AND  TELEPHONE  NUMBERS SET FORTH ON THE BACK
COVER OF THIS PROSPECTUS. REQUESTS FOR ADDITIONAL COPIES OF THIS PROSPECTUS
AND THE LETTER OF TRANSMITTAL MAY BE DIRECTED TO THE  INFORMATION  AGENT OR
TO BROKERS, DEALERS, COMMERCIAL BANKS OR TRUST COMPANIES.


AVAILABLE INFORMATION.....................................................1
INCORPORATION OF CERTAIN INFORMATION BY REFERENCE.........................2
COMPANY INFORMATION.......................................................3
FORWARD-LOOKING STATEMENTS................................................4
PROSPECTUS SUMMARY........................................................5
    SPX...................................................................5
    The Company...........................................................5
    Reasons for the Offer.................................................6
    Background of the Offer...............................................6
    Risk Factors..........................................................7
    The Offer.............................................................7
    Certain Federal Income Tax Consequences...............................9
    Effect of Offer on Market for Shares.................................10
    Dissenters' Rights...................................................10
    Comparison of the Rights of Holders of Shares and SPX 
      Common Stock.......................................................10
    Description of SPX Capital Stock.....................................10
    The Exchange Agent...................................................11
    Requests for Assistance and Additional Copies........................11
    Market Prices and Dividends..........................................11
    Comparative Per Share Data...........................................13
    Selected Historical Financial Data of SPX............................15
    Selected Historical Financial Data of the Company....................19
    Selected Pro Form Combined Financial Data of SPX and the  
      Company............................................................22
RISK FACTORS.............................................................25
REASONS FOR THE OFFER....................................................27
BACKGROUND OF THE OFFER..................................................27
THE SPECIAL MEETING......................................................28
THE OFFER................................................................29
    General..............................................................29
    The Rights...........................................................30
    Timing of the Offer..................................................30
    Extension, Termination and Amendment.................................31
    Exchange of Shares; Delivery of SPX Common Stock and Cash
      Consideration......................................................31
    Cash in Lieu of Fractional Shares of SPX Common Stock................32
    Withdrawal Rights....................................................32
    Procedure for Tendering..............................................33
    Certain Federal Income Tax Consequences..............................36
    Effect of Offer on Market for Shares; Registration under
      the Exchange Act...................................................38
    Purpose of the Offer; the Merger.....................................39
    Conditions of the Offer..............................................40
    Source and Amount of Funds...........................................44
    Debt Instruments of the Company......................................45
    Relationships with the Company.......................................45
    Fees and Expenses....................................................45
    Accounting Treatment.................................................46
    Stock Exchange Listing...............................................46
THE MERGER...............................................................46
    General..............................................................46
    Dissenters' Rights...................................................47
BUSINESSES OF SPX AND THE COMPANY........................................47
    SPX..................................................................47
    The Company..........................................................48
DESCRIPTION OF SPX CAPITAL STOCK.........................................48
COMPARISON OF RIGHTS OF HOLDERS OF SHARES AND SPX COMMON STOCK...........49
MARKET PRICES AND DIVIDENDS..............................................59
COMPARATIVE PER SHARE DATA...............................................60
SELECTED HISTORICAL FINANCIAL DATA OF SPX................................63
SELECTED HISTORICAL FINANCIAL DATA OF THE COMPANY........................67
PRO FORMA CONDENSED COMBINED FINANCIAL DATA OF SPX AND
    THE COMPANY..........................................................70
PRO FORMA ADJUSTED HISTORICAL FINANCIAL DATA OF SPX......................78
VALIDITY OF SPX COMMON STOCK.............................................81
EXPERTS..................................................................81


                           AVAILABLE INFORMATION

     SPX and the Company are subject to the  informational  requirements of
the Securities  Exchange Act of 1934, as amended (the "Exchange Act"), and,
in  accordance  therewith,   file  reports,   proxy  statements  and  other
information with the Securities and Exchange Commission (the "Commission").
The reports,  proxy  statements and other  information  filed by SPX or the
Company with the Commission may be inspected and copied at the Commission's
public reference room located at Judiciary  Plaza, 450 Fifth Street,  N.W.,
Room 1024,  Washington,  D.C. 20549, and at the public reference facilities
in the Commission's regional offices located at: 7 World Trade Center, 13th
Floor,  New York, New York 10048,  and 500 West Madison Street,  Suite 400,
Chicago,  Illinois  60661.  Copies  of such  material  may be  obtained  at
prescribed rates by writing to the Commission,  Public  Reference  Section,
450 Fifth Street,  N.W.,  Washington,  D.C. 20549.  SPX and the Company are
electronic filers with the Commission, which maintains a website containing
reports,  proxy and other information statements at the following location:
http://www.sec.gov.  The  Shares  are  listed  on  the  NYSE,  the  Pacific
Exchange,  Inc. (the "PE") and the  International  Stock Exchange in London
under the symbol  "ECH".  The shares of SPX Common  Stock are listed on the
NYSE and the PE  under  the  symbol  "SPW".  The  periodic  reports,  proxy
statements  and other  information  filed by SPX and the  Company  with the
Commission  may be inspected at the offices of the NYSE,  20 Broad  Street,
New York, New York 10005,  and at the offices of the PE at 301 Pine Street,
San Francisco, California 94104.

     This  Prospectus  does not contain all of the information set forth in
the  Registration  Statement  on Form  S-4 (the  "Registration  Statement")
covering the SPX Common Stock offered  hereby which has been filed with the
Commission.  Reference  is hereby made to the  Registration  Statement  for
further  information  with respect to SPX,  the Company and the  securities
offered hereby.  Statements  contained herein concerning  certain documents
are not  necessarily  complete and, in each instance,  reference is made to
the  copies  of  such  documents  filed  as  exhibits  to the  Registration
Statement or otherwise  filed with the  Commission.  Each such statement is
qualified in its entirety by such reference.

     Not later than the date of  commencement  of the Offer,  SPX will file
with the  Commission a statement on Schedule  14D-1  pursuant to Rule 14d-3
under the Exchange Act furnishing  certain  information with respect to the
Offer.  Such schedule and any  amendments  thereto  should be available for
inspection  and copying as set forth above  (except that such  schedule and
any amendments thereto will not be available at the regional offices of the
Commission).

     Pursuant to Rule 409 promulgated  under the Securities Act of 1933, as
amended  (the  "Securities  Act"),  and Rule 12b-21  promulgated  under the
Exchange Act, SPX will request that the Company and its independent  public
accountants,  Price Waterhouse LLP, provide to SPX the information required
for complete  disclosure  concerning  the business,  operations,  financial
condition  and  management  of the  Company.  SPX will  provide any and all
information  which it receives from the Company prior to the  expiration of
the  Offer and which SPX deems  material,  reliable  and  appropriate  in a
subsequently prepared amendment or supplement thereto.


             INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

     THIS  PROSPECTUS  INCORPORATES  DOCUMENTS BY  REFERENCE  WHICH ARE NOT
PRESENTED  HEREIN OR DELIVERED  HEREWITH.  THESE  DOCUMENTS  (NOT INCLUDING
EXHIBITS  TO SUCH  DOCUMENTS  WHICH ARE NOT  SPECIFICALLY  INCORPORATED  BY
REFERENCE TO SUCH DOCUMENTS) ARE AVAILABLE  WITHOUT CHARGE UPON REQUEST TO:
CORPORATE SECRETARY, SPX CORPORATION, 700 TERRACE POINT DRIVE, MUSKEGON, MI
49443.  REQUESTS MAY BE DIRECTED TO SPX'S SECRETARY AT (616)  724-5000.  IN
ORDER  TO  ENSURE  TIMELY  DELIVERY  OF SUCH  DOCUMENTS,  ANY  REQUEST  FOR
DOCUMENTS SHOULD BE SUBMITTED NO LATER THAN FIVE BUSINESS DAYS PRIOR TO THE
EXPIRATION DATE OF THE OFFER.

     The  following  documents  filed with the  Commission by SPX (File No.
1-6948) are incorporated herein by reference:

     (i) SPX's Annual  Report on Form 10-K for the year ended  December 31,
1996 ("SPX's 1996 Form 10-K");

     (ii) SPX's Proxy Statement for the Annual Meeting of Stockholders held
on April 23, 1997 ("SPX 1997 Annual Meeting Proxy Statement");

     (iii) SPX's Quarterly Reports on Form 10-Q for the periods ended March
31, 1997, June 30, 1997 and September 30, 1997;

     (iv) SPX's Current  Reports on Form 8-K,  dated  February 21, 1997 and
April 25, 1997; and

     (v) SPX's  Preliminary  Solicitation  Statement on Schedule 14A, dated
February 17, 1998, to the shareholders of the Company.

     The following documents filed with the Commission by the Company (File
No. 1-4651) are incorporated herein by reference:

     (i) the Company's Annual Report on Form 10-K for the fiscal year ended
August 31, 1997 (the  "Company's 1997 Form 10-K") (except for the report of
the  Company's  independent  accountants  contained  therein  which  is not
incorporated  herein by  reference  because  the  consent of the  Company's
independent accountants has not yet been obtained);

     (ii)  the  Company's   Proxy  Statement  for  the  Annual  Meeting  of
Shareholders held on December 17, 1997 (the "Company's 1997 Annual Meeting
Proxy Statement"); and

     (iii) the Company's Quarterly Report on Form 10-Q for the period ended
November 30, 1997 (the "Company's 1998 First Quarter Form 10-Q").

     All documents  filed by either SPX or the Company  pursuant to Section
13(a),   13(c),   14  or  15(d)  of  the  Exchange  Act  subsequent  to  or
contemporaneous  with the date  hereof and prior to the date the Shares are
accepted  for  exchange  or the Offer is  terminated  shall be deemed to be
incorporated  herein by reference  and to be a part hereof from the date of
such filing. See "Available Information." Any statement contained herein or
in a document incorporated or deemed to be incorporated herein by reference
shall be deemed to be modified or  superseded  for  purposes  hereof to the
extent that a statement contained herein or in any other subsequently filed
document  which  also  is,  or is  deemed  to be,  incorporated  herein  by
reference  modifies or supersedes  such  statement.  Any such  statement so
modified  shall not be deemed to  constitute  a part  hereof,  except as so
modified, and any statement so superseded shall not be deemed to constitute
a part hereof.

                            COMPANY INFORMATION

     While SPX has included  information  concerning the Company insofar as
it is known or reasonably  available to SPX, the Company is not  affiliated
with SPX and the  Company  has not to date  permitted  access by SPX to the
Company's  books and records for the purpose of preparing this  Prospectus.
Therefore,  information  concerning  the  Company  which  has not been made
public  was  not  available  to SPX  for  the  purpose  of  preparing  this
Prospectus.  Although  SPX  has  no  knowledge  that  would  indicate  that
statements  relating to the Company  contained or incorporated by reference
in this  Prospectus  in reliance upon publicly  available  information  are
inaccurate or incomplete,  SPX was not involved in the  preparation of such
information  and  statements  and, for the foregoing  reasons,  is not in a
position to verify any such information or statements.

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


     NO PERSON  HAS BEEN  AUTHORIZED  TO GIVE ANY  INFORMATION  OR MAKE ANY
REPRESENTATION  IN CONNECTION  WITH THE OFFER OTHER THAN THOSE CONTAINED OR
INCORPORATED BY REFERENCE IN THIS  PROSPECTUS,  AND, IF GIVEN OR MADE, SUCH
INFORMATION  OR  REPRESENTATION  MUST NOT BE  RELIED  UPON AS  HAVING  BEEN
AUTHORIZED  BY SPX OR BY THE  DEALER  MANAGER.  THIS  PROSPECTUS  DOES  NOT
CONSTITUTE AN OFFER OR A SOLICITATION TO ANY PERSON IN ANY  JURISDICTION IN
WHICH SUCH OFFER OR SOLICITATION  IS UNLAWFUL.  THE OFFER IS NOT BEING MADE
TO, NOR WILL TENDERS BE ACCEPTED FROM OR ON BEHALF OF, HOLDERS OF SHARES IN
ANY JURISDICTION IN WHICH THE MAKING OR ACCEPTANCE  THEREOF WOULD NOT BE IN
COMPLIANCE  WITH THE LAWS OF SUCH  JURISDICTION.  HOWEVER,  SPX MAY, IN ITS
SOLE  DISCRETION,  TAKE SUCH  ACTION AS IT MAY DEEM  NECESSARY  TO MAKE THE
OFFER IN ANY SUCH JURISDICTION. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR
ANY EXCHANGE HEREUNDER SHALL UNDER ANY CIRCUMSTANCES CREATE ANY IMPLICATION
THAT THERE HAS BEEN NO CHANGE IN THE  AFFAIRS OF SPX OR THE  COMPANY  SINCE
THE DATE AS OF WHICH INFORMATION IS FURNISHED OR THE DATE HEREOF.

     IN ANY  JURISDICTION  WHERE  THE  SECURITIES,  BLUE SKY OR OTHER  LAWS
REQUIRE  THE OFFER TO BE MADE BY A  LICENSED  BROKER OR  DEALER,  THE OFFER
SHALL BE  DEEMED  TO BE MADE ON  BEHALF  OF SPX BY CIBC  OPPENHEIMER  CORP.
("CIBC  OPPENHEIMER"),  AS DEALER MANAGER,  OR ONE OR MORE OTHER REGISTERED
BROKERS OR DEALERS LICENSED UNDER THE LAWS OF SUCH JURISDICTION.

                         FORWARD-LOOKING STATEMENTS

     CERTAIN STATEMENTS CONTAINED IN THIS PROSPECTUS UNDER "REASONS FOR THE
OFFER," AND  "BACKGROUND  OF THE OFFER," IN ADDITION TO CERTAIN  STATEMENTS
CONTAINED  ELSEWHERE IN THIS PROSPECTUS OR INCORPORATED HEREIN BY REFERENCE
THAT  ARE  NOT   STATEMENTS  OF  HISTORICAL   FACTS  ARE   "FORWARD-LOOKING
STATEMENTS" WITHIN THE MEANING OF THE PRIVATE SECURITIES  LITIGATION REFORM
ACT OF 1995  AND ARE  THUS  PROSPECTIVE.  SUCH  FORWARD-LOOKING  STATEMENTS
INCLUDE,  WITHOUT LIMITATION,  STATEMENTS  REGARDING SPX'S OR THE COMPANY'S
FUTURE  FINANCIAL  POSITION,  RESULTS  OF  OPERATIONS,   BUSINESS  STRATEGY
(INCLUDING FUTURE  DISPOSITIONS OF ASSETS AND RESTRUCTURING OF OPERATIONS),
BUDGETS,  EXPECTED  COST  SAVINGS,  PLANS AS TO  DIVIDENDS,  AND  PLANS AND
OBJECTIVES  OF  MANAGEMENT  FOR  FUTURE  OPERATIONS.  SUCH  FORWARD-LOOKING
STATEMENTS  ARE SUBJECT TO RISKS,  UNCERTAINTIES  AND OTHER  FACTORS  WHICH
COULD  CAUSE  ACTUAL  RESULTS  TO DIFFER  MATERIALLY  FROM  FUTURE  RESULTS
EXPRESSED OR IMPLIED BY SUCH FORWARD-LOOKING STATEMENTS.  IMPORTANT FACTORS
THAT COULD CAUSE ACTUAL RESULTS TO DIFFER  MATERIALLY  FROM THE INFORMATION
SET FORTH IN ANY  FORWARD-LOOKING  STATEMENTS  ARE  DISCLOSED  UNDER  "RISK
FACTORS"  ("CAUTIONARY  STATEMENTS").   ALL  SUBSEQUENT  WRITTEN  AND  ORAL
FORWARD-LOOKING  STATEMENTS ATTRIBUTABLE TO SPX OR TO PERSONS ACTING ON ITS
BEHALF  ARE  EXPRESSLY  QUALIFIED  IN  THEIR  ENTIRETY  BY  THE  CAUTIONARY
STATEMENTS.  SPX WAS NOT INVOLVED IN THE PREPARATION OF ANY FORWARD-LOOKING
STATEMENTS  RELATING  TO THE  COMPANY  INCORPORATED  BY  REFERENCE  IN THIS
PROSPECTUS AND IS NOT IN A POSITION TO VERIFY SUCH  STATEMENTS AND TAKES NO
RESPONSIBILITY THEREFOR.

                             PROSPECTUS SUMMARY

     The  information  below  is  qualified  in its  entirety  by the  more
detailed  information and financial  statements appearing elsewhere in this
Prospectus,  including the  documents  incorporated  in this  Prospectus by
reference.   Shareholders  are  urged  to  read  this  Prospectus  and  the
attachments hereto, and the documents incorporated herein by reference,  in
their  entirety.  As used in  this  Prospectus,  the  terms  "SPX"  and the
"Company"  refer to SPX  Corporation  and Echlin Inc.,  respectively,  and,
unless the context otherwise requires, their subsidiaries.

SPX

     General.  SPX is a global  provider of Vehicle  Service  Solutions  to
franchised dealers of motor vehicle  manufacturers and independent  service
locations, Service Support to vehicle manufacturers, and Vehicle Components
to the worldwide motor vehicle industry.

     SPX is  comprised  of two  business  segments.  The Service  Solutions
segment includes operations that primarily design, manufacture and market a
wide range of specialty service tools, equipment and services to the global
motor vehicle  industry.  Major  customers are franchised  dealers of motor
vehicle   manufacturers,   aftermarket   vehicle  service   facilities  and
independent  distributors.  Vehicle  Components  includes  operations  that
primarily  design,   manufacture  and  market   transmission  and  steering
components for light and heavy duty vehicle  markets,  principally in North
America  and  Europe.  Major  customers  of this  segment  include  vehicle
manufacturers, other component manufacturers and the aftermarket.

     SPX  was   organized   in  1911  under  the  laws  of   Michigan   and
reincorporated  in  Delaware  in 1968.  SPX was  known as The  Piston  Ring
Company until 1931,  when it changed its name to Sealed Power  Corporation.
In 1988,  it  changed  its name  again to SPX  Corporation.  Today SPX is a
multinational corporation with operations in 14 countries.  SPX's corporate
headquarters  is  located  at  700  Terrace  Point  Drive,   Muskegon,   MI
49443-3301, telephone number (616) 724-5000.

     Subsequent  Developments.  During  the  fourth  quarter  of 1997,  SPX
recorded a $110.0 million pre-tax, $70.4 million after-tax, special charge.
The  special  charge  primarily  includes  costs to combine its OE Tool and
Equipment and Aftermarket  Tool and Equipment  groups into a single Service
Solutions  business and to reorganize its Service Solutions field sales and
service organization, including the closing of several facilities and sales
offices with a commensurate reduction in work force, in order to reposition
the Service Solutions business in response to changing market dynamics. SPX
estimates  that the savings  from these  actions will be $0.15 per share in
1998 and an additional $0.35 per share in 1999.

     On February 17, 1998,  in  conjunction  with its  announcement  of the
Proposed Business Combination, SPX reported a net loss of $60.0 million, or
$4.77 per share,  for the fourth  quarter  1997 after the impact of a $70.4
million,  or $5.60 per share,  special charge.  For the full year 1997, SPX
reported  a net  loss of $3.4  million,  or  $0.26  per  share,  before  an
extraordinary  item and after the impact of $43.4 million in unusual items.
Unusual  items for the full  year 1997  include  special  charges  of $74.6
million,  or $5.61 per share, and a $31.2 million, or $2.34 per share, gain
on the sale of a business.  Earnings  per share for the full year 1997 were
$3.01,  before  unusual  items.  This  was  a  71%  improvement  over  1996
comparable results. All per share data is presented on a diluted basis.

THE COMPANY

     The following information concerning the Company is excerpted from the
Company's 1997 Form 10-K. See "Company Information."

     The Company was  incorporated  in the state of Connecticut in 1959 and
is  engaged  in only one  business  segment,  as a  worldwide  supplier  of
products  to  maintain  or  improve  the  efficiency  and  safety  of motor
vehicles.  The  Company's  principal  products can be  classified  into the
following categories:  brake system, engine system, other vehicle parts and
non-vehicular products.

     The Company's products are sold primarily as replacement  products for
use by professional technicians and by car and truck owners. Sales are made
to automotive warehouse distributors,  heavy-duty distributors,  retailers,
other parts manufacturers and parts remanufacturers. The Company also sells
its products to original equipment manufacturers in both the automotive and
heavy-duty markets.

     The Company's  corporate  headquarters are located at 100 Double Beach
Road, Branford, CT 06405, telephone number (203) 481-5751.

REASONS FOR THE OFFER

     On February 17, 1998, SPX delivered a letter to the Board of Directors
of the  Company  proposing  to enter into a business  combination  with the
Company   (the   "Proposed   Business   Combination")   pursuant  to  which
shareholders of the Company would receive for each Share the  Consideration
in the amount of $12.00 net in cash and 0.4796  share of SPX Common  Stock.
Based on the  $75-1/16  closing  price of a share  of SPX  Common  Stock on
February 13, 1998,  the last trading date  preceding  the date of the first
public announcement of the Proposed Business Combination, the Consideration
of $48.00  represents a 23% premium over the $38-7/8 price at which a Share
closed on the NYSE on February  13, 1998 and a 32% premium over the average
trading  price at which a Share  closed on the NYSE  during  the 30 trading
days  preceding  that  date.  Immediately  following  consummation  of  the
Proposed  Business  Combination  and after giving effect to the issuance of
the SPX Common Stock in the  transaction,  the  shareholders of the Company
(other than SPX) would own approximately 70% of the then outstanding shares
of SPX Common Stock.

     With  its  letter  to the  Board  of  Directors  of the  Company,  SPX
delivered a proposed merger  agreement to the Company in  contemplation  of
arriving  at a  negotiated  transaction.  That  agreement  provides  for  a
single-step  "cash election" merger of the Company into a subsidiary of SPX
in which  each  outstanding  Share  would be  converted  into the  right to
receive  the  Consideration  (with  shareholders  able to elect to  receive
instead all cash, in the amount of $48.00 per Share,  or all stock,  in the
amount of 0.6395 share of SPX Common Stock per Share, subject to proration)
in a partially tax-free  reorganization.  However, because of the Company's
negative  responses to SPX's  approaches  over the several  months prior to
February  17,  1998  (see  "Background"),  SPX  also  filed a  Registration
Statement,  of which this Prospectus is part, with the Commission,  so that
the Proposed Business Combination may be effected by means of the Offer, to
be  followed by the Merger in which each Share not  purchased  in the Offer
would  be  converted  into the  right to  receive  the  Consideration.  The
exchange of Shares for the  Consideration  in the Offer and the Merger will
be a  taxable  transaction.  See "The  Offer--Certain  Federal  Income  Tax
Consequences."

     The  Company  has not  provided  SPX with  information  that  might be
relevant to the structuring of the Merger. SPX therefore reserves the right
to change the structure of the Merger upon receipt of such information.  If
the  Merger  is  consummated,  the  Company  will  become  a  wholly  owned
subsidiary  of SPX. If the Minimum  Tender  Condition is satisfied  and the
other  Offer   Conditions   are  satisfied  or  waived  and  the  Offer  is
consummated,  SPX will own at least 66-2/3% of the outstanding  Shares, and
will have  sufficient  voting  power in the  Company to approve  the Merger
independently of the votes of any other shareholders of the Company.

     SPX believes that the Offer is in the best  interests of the Company's
shareholders  because,  among other things,  the  Consideration  will allow
shareholders  of the  Company to realize a  substantial  premium  for their
Shares in cash immediately,  while  continuing,  through their ownership of
SPX Common  Stock,  to  participate  in the future  growth of the  combined
companies. See "Reasons for the Offer."

BACKGROUND OF THE OFFER

     In February  1997,  John B.  Blystone,  Chairman  and Chief  Executive
Officer  of SPX,  met with  Trevor O.  Jones,  then  Chairman  and  interim
President and Chief Executive  Officer of the Company,  to propose that the
two companies explore a business  combination.  Mr. Jones did not follow up
on this meeting.  In November 1997, Mr. Blystone met for several hours with
Larry McCurdy, who had succeeded Mr. Jones as President and Chief Executive
Officer,  to discuss a strategic  merger between the two companies,  and on
November 24, 1997,  Patrick J. O'Leary,  SPX's Vice President - Finance and
Chief  Financial  Officer,  met  with  Robert  Tobey,  the  Company's  Vice
President - Corporate Development. These discussions were not fruitful, and
SPX was informed that the Company had no interest in a business combination
with SPX.

     On December  12,  1997,  Mr.  Blystone  wrote a letter to Mr.  McCurdy
setting out the strategic  rationale of a business  combination  of the two
companies   and  the  benefits  to  the  Company's   shareholders   of  the
transaction. Although the letter stated that SPX anticipated a price in the
$40's range,  Mr. Blystone advised Mr. McCurdy that SPX would be willing to
revise its  thinking if the Company  could  identify  greater  value in the
transaction. Mr. Blystone, in his letter, further suggested that the letter
be shared with the  Company's  Board of Directors  and offered to meet with
and make a  presentation  to the  Board  about any and all  aspects  of the
proposed transaction.

     On December 17, 1997, Mr. Blystone  received a letter from Mr. McCurdy
stating that Mr. McCurdy had shared Mr. Blystone's views with the Company's
Board of  Directors,  and  that  the  Company's  and the  Board's  position
remained that the Company had no interest in further discussions with SPX.

     On December 18, 1997, Mr. Blystone sent a letter to each member of the
Company's  Board enclosing a copy of his December 12 letter and reiterating
the merits of a strategic  combination.  Mr. Blystone once again offered to
meet  personally  with and make a  presentation  to the Company's  Board of
Directors.

     On December 23, 1997, Mr. Blystone  received a letter from Mr. McCurdy
advising  that the Company's  Board of Directors was of the unanimous  view
that the Company did not have an interest in pursuing discussions with SPX.

     On January 6, 1998,  SPX  notified  the  Company  that it was that day
filing a Premerger Notification and Report Form under the Hart-Scott-Rodino
Antitrust  Improvements  Act of 1976 ("HSR  Act")  seeking to acquire up to
100% of the voting securities of the Company (the "HSR Filing").

     On January 8, 1998,  Mr. McCurdy wrote to Mr.  Blystone  acknowledging
receipt  of the HSR  Filing  and  advising  SPX  that the  Company  and its
advisors stood ready to aggressively defend its shareholders' interests.

     On February 17, 1998, SPX sent the Board of Directors of the Company a
letter setting forth the Proposed  Business  Combination and its merits and
reaffirming its desire to enter into a negotiated transaction.

     On the same day,  SPX filed a  Registration  Statement,  of which this
Prospectus  is  part.  Concurrently,  SPX  filed  preliminary  solicitation
materials  with  the  Commission  for  use in  soliciting  written  demands
("Demands")  from the shareholders of the Company that a special meeting of
shareholders (the "Special  Meeting") be called and held for the purpose of
removing the current Board of Directors of the Company and  replacing  them
with  SPX's  nominees.  Under the  Connecticut  Business  Act,  holders  of
outstanding  Shares  representing  in the aggregate at least 35% of all the
votes  entitled to be cast on any issue  proposed to be  considered  at the
Special  Meeting have the right to demand that a Special  Meeting be called
and held.  On February  17,  1998,  SPX also  delivered  to the Company its
Demand that the Special Meeting be called and held. SPX also made a written
request  under the  Connecticut  Business  Act for access to the  Company's
shareholder  list  for the  purpose  of  communicating  directly  with  the
Company's shareholders.

RISK FACTORS

     See "Risk  Factors"  beginning on page 25 for a discussion  of certain
factors that should be considered by  shareholders  in deciding  whether to
tender their Shares to SPX pursuant to the Offer.

THE OFFER

     General.  SPX  hereby  offers,  upon  the  terms  and  subject  to the
conditions  set forth herein and in the related Letter of  Transmittal,  to
exchange the  Consideration  for each outstanding Share validly tendered on
or  prior  to the  Expiration  Date and not  withdrawn.  The  Consideration
consists of $12.00 in cash and 0.4796 share of SPX Common  Stock.  The term
"Expiration Date" shall mean 12:00 midnight, New York City time, on       ,
1998,  unless and until SPX  extends the period of time for which the Offer
is open,  in which event the term  "Expiration  Date" shall mean the latest
time and date at which the Offer, as so extended by SPX, shall expire.  See
"The Offer--General."

     Rights.  Shareholders  will be  required  to tender one Right for each
Share  tendered  in order to effect a valid  tender of  Shares,  unless the
Rights Plan Condition has been satisfied or waived. Unless the Distribution
Date occurs,  a tender of Shares will constitute a tender of the associated
Rights.

     Conditions of the Offer.  SPX's obligation to exchange cash and shares
of SPX Common Stock for Shares  pursuant to the Offer is conditioned  upon,
among other things, the satisfaction or, where permissible,  waiver of each
of the Offer Conditions. See "The Offer--Conditions of the Offer."

     Subject to the applicable rules and regulations of the Commission, SPX
expressly  reserves the right, in its sole discretion,  at any time or from
time to time,  to delay  acceptance  for  exchange  of, or,  regardless  of
whether such Shares were  theretofore  accepted for exchange,  exchange any
Shares  pursuant to the Offer or to amend or terminate the Offer and not to
accept for  exchange or exchange  any Shares not  theretofore  accepted for
exchange or exchanged upon the failure of any of the Offer Conditions to be
satisfied.  SPX  reserves  the  absolute  right  to  waive  any  defect  or
irregularity  in the tender of any securities and to waive any of the Offer
Conditions  (other  than the SPX  Stockholder  Approval  Condition  and the
condition  related to the  effectiveness  of the  Registration  Statement).
Although SPX reserves the right to do so, SPX does not currently  intend to
waive the  Minimum  Tender  Condition,  the Rights  Plan  Condition  or the
Business Combination Statutes Condition.  See "The Offer--Conditions of the
Offer. " Waiver or amendment of certain conditions of the Offer may require
an extension of the Offer.

     Regulatory Approvals. The acquisition of Shares by SPX pursuant to the
Offer is subject  to the HSR Act and the rules  that have been  promulgated
thereunder.  On January 6, 1998, SPX made the HSR Filing with the Antitrust
Division of the  Department of Justice (the  "Antitrust  Division") and the
Federal Trade  Commission  (the "FTC").  At 11:59 p.m. on February 5, 1998,
the waiting period expired with respect to the HSR Filing.

     Timing of the Offer.  The Offer is  currently  scheduled  to expire at
12:00 midnight New York City time on              ,  1998;  however,  it is
SPX's current  intention to extend the Offer from time to time as necessary
until all conditions to the Offer have been  satisfied or waived.  See "The
Offer--Extension,  Termination  and  Amendment"  and  "--Conditions  of the
Offer." SPX has received a "highly confident" letter from Canadian Imperial
Bank of  Commerce  ("CIBC")  and its  affiliate,  CIBC  Oppenheimer,  dated
February  13, 1998,  in which the two  entities  state that they are highly
confident of their ability to raise  financing in the credit  markets in an
amount  sufficient to consummate the acquisition of the Company,  including
the  refinancing  of existing  debt of SPX and the Company,  the payment of
related fees and expenses, and the provision of working capital for SPX and
its subsidiaries (the "Financing"). SPX believes that it is highly unlikely
that it will not have  obtained the  Financing  prior to five business days
before the Expiration Date;  however, in this unlikely event, SPX currently
intends to extend the Offer to ensure  that five  business  days remain for
shareholders  to  tender  their  Shares in the  Offer  subsequent  to SPX's
obtaining the Financing. See "The Offer--Source and Amount of Funds."

     In  connection  with the Offer,  SPX is  soliciting  Demands  from the
shareholders  of the Company that a Special  Meeting be called and held for
the purpose of removing  the current  Board of Directors of the Company and
electing  SPX's  Nominees  in  their  place.  The  Company  does not have a
staggered  Board.  If SPX is  successful  in  procuring  Demands  from  the
requisite  35%  holders so that a Special  Meeting  for those  purposes  is
called and held,  SPX  intends to solicit  proxies  for use at the  Special
Meeting to effect such removal and election.  SPX does not intend to call a
special  meeting of its own  stockholders to approve the issuance of shares
of SPX Common Stock in connection  with the Offer,  and thereby satisfy the
SPX Stockholder  Approval  Condition,  until the required number of Demands
have been received to call the Special Meeting.

     Extension, Termination and Amendment. SPX expressly reserves the right
(but will not be obligated),  in its sole  discretion,  at any time or from
time to time, and regardless of whether any of the events set forth in "The
Offer--Conditions  of the  Offer"  shall have  occurred  or shall have been
determined by SPX to have occurred, (a) to extend the period of time during
which the Offer is to remain open by giving oral or written  notice of such
extension to the Exchange Agent, which extension will be announced no later
than 9:00 a.m., Eastern Time, on the next business day after the previously
scheduled  Expiration  Date,  and (b) to amend  the  Offer  in any  respect
(including,   without   limitation,   by  decreasing   or  increasing   the
consideration  offered  in  the  Offer  to  holders  of  Shares  and/or  by
increasing or decreasing the number of Shares being sought in the Offer) by
giving oral or written notice of such amendment to the Exchange Agent.  The
rights  reserved by SPX in this paragraph are in addition to SPX's right to
terminate the Offer as described in "The Offer--Extension,  Termination and
Amendment."  There can be no assurance  that SPX will exercise its right to
extend the Offer.  However,  it is SPX's  current  intention  to extend the
Offer until all Offer  Conditions  have been satisfied or waived.  See "The
Offer--Extension,  Termination and  Amendment."  During any such extension,
all Shares previously tendered and not withdrawn will remain subject to the
Offer,  subject to the right of a tendering  shareholder to withdraw his or
her Shares. See "The Offer--Withdrawal Rights."

     Exchange   of  Shares;   Delivery   of  SPX  Common   Stock  and  Cash
Consideration.  Upon the terms and subject to the  conditions  of the Offer
(including,  if the Offer is extended or amended,  the terms and conditions
of any such extension or amendment), SPX will accept for exchange, and will
exchange, Shares validly tendered and not properly withdrawn as promptly as
practicable  following the  Expiration  Date. See "The  Offer--Exchange  of
Shares; Delivery of SPX Common Stock and Cash Consideration."

     Withdrawal  Rights.  Tenders of Shares made  pursuant to the Offer are
irrevocable,  except  that  Shares  tendered  pursuant  to the Offer may be
withdrawn at any time prior to the Expiration Date, and, unless theretofore
accepted for exchange and exchanged by SPX for the  Consideration  pursuant
to the  Offer,  may  also be  withdrawn  at any  time  after [ ].  See "The
Offer--Withdrawal Rights."

     Procedure for Tendering  Shares.  For a Shareholder  validly to tender
Shares  pursuant to the Offer,  (i) a properly  completed and duly executed
Letter of Transmittal (or manually executed  facsimile  thereof),  together
with any required signature  guarantees,  or an Agent's Message (as defined
herein) in connection  with a book-entry  transfer,  and any other required
documents, must be transmitted to and received by the Exchange Agent at one
of its addresses set forth on the back cover of this Prospectus, and either
certificates  for tendered Shares must be received by the Exchange Agent at
such address or such Shares must be tendered pursuant to the procedures for
book-entry  transfer set forth under "The  Offer--Procedure  for Tendering"
(and a  confirmation  of receipt of such  tender  received),  in each case,
prior to the Expiration Date, or (ii) such shareholder must comply with the
guaranteed  delivery  procedure set forth under "The  Offer--Procedure  for
Tendering."

     Shareholders  will be  required  to tender  one  Right for each  Share
tendered  in order to effect a valid  tender of  Shares,  unless the Rights
Plan Condition has been satisfied or waived.  Unless the Distribution  Date
occurs,  a tender  of Shares  will  constitute  a tender of the  associated
Rights.

     THE METHOD OF DELIVERY OF SHARE CERTIFICATES (AND RIGHTS CERTIFICATES,
IF APPLICABLE) AND ALL OTHER REQUIRED DOCUMENTS, INCLUDING DELIVERY THROUGH
ANY  BOOK-ENTRY  TRANSFER  FACILITY,  IS AT  THE  OPTION  AND  RISK  OF THE
TENDERING  SHAREHOLDER,  AND THE  DELIVERY  WILL BE  DEEMED  MADE ONLY WHEN
ACTUALLY RECEIVED BY THE EXCHANGE AGENT. IF DELIVERY IS BY MAIL, REGISTERED
MAIL WITH RETURN RECEIPT REQUESTED,  PROPERLY INSURED,  IS RECOMMENDED.  IN
ALL CASES,  SUFFICIENT  TIME SHOULD BE ALLOWED TO ENSURE  TIMELY  DELIVERY.

CERTAIN FEDERAL INCOME TAX CONSEQUENCES

     The exchange of Shares for SPX Common  Stock and cash  pursuant to the
Offer and the Merger will be a taxable  transaction for U.S. federal income
tax  purposes and may also be taxable  under  applicable  state,  local and
foreign  tax  laws.  If the Board of  Directors  of the  Company  agrees to
discuss a business  combination  with SPX,  the Offer and the Merger may be
restructured to be a partially  tax-free merger for U.S. federal income tax
purposes.

     All  Company  shareholders  should  carefully  read the summary of the
federal  income tax  consequences  of the Offer and the  Merger  under "The
Offer--Certain  Federal Income Tax  Consequences"  and are urged to consult
with their own tax advisors as to the federal, state, local and foreign tax
consequences in their particular circumstances.

EFFECT OF OFFER ON MARKET FOR SHARES

     The exchange of Shares pursuant to the Offer will reduce the number of
holders  of Shares  and the number of Shares  that  might  otherwise  trade
publicly and could  adversely  affect the liquidity and market value of the
remaining Shares held by the public.

     The Shares are listed on the NYSE, the PE and the International  Stock
Exchange in London.  Depending on the number of Shares acquired pursuant to
the Offer,  following  consummation of the Offer,  the Shares may no longer
meet the requirements of the American exchanges for continued listing,  and
the Shares may no longer constitute "margin securities" for purposes of the
Federal Reserve Board's margin regulations, in which event the Shares could
no longer be used as collateral for margin loans made by brokers.  See "The
Offer--Effect  of  Offer on  Market  for  Shares;  Registration  under  the
Exchange Act."

DISSENTERS' RIGHTS

     Holders  of Shares do not have  dissenters'  rights as a result of the
Offer. In the event the Merger is consummated,  holders of Shares will have
dissenters' rights with respect to their Shares under Section 33-856 of the
Connecticut   Business  Act  assuming  they  comply  with  the   procedural
requirements of the Connecticut Business Act. See "The  Merger--Dissenters'
Rights."

COMPARISON OF THE RIGHTS OF HOLDERS OF SHARES AND SPX COMMON STOCK

     As a  consequence  of the  exchange of Shares for shares of SPX Common
Stock  in  the  Offer  and  the  Merger,  shareholders  of the  Company,  a
corporation  incorporated  under  the  laws of  Connecticut,  would  become
shareholders  of SPX,  a  Delaware  corporation.  Such  holders  would have
certain  rights as  shareholders  of SPX that are different from the rights
they currently have in the Company, both because of the differences between
SPX's Restated Certificate of Incorporation, as amended ("SPX's Certificate
of  Incorporation"),  and  By-Laws,  on the one  hand,  and  the  Company's
Certificate of  Incorporation,  as amended (the  "Company's  Certificate of
Incorporation"), and By-Laws, on the other hand, and because of differences
between  Connecticut and Delaware  corporation law. For a comparison of the
Certificate of Incorporation  and By-Law  provisions of SPX and the Company
and of  Connecticut  and  Delaware  law, see  "Comparison  of the Rights of
Holders of Shares and SPX Common Stock."

DESCRIPTION OF SPX CAPITAL STOCK

     The  authorized  capital of SPX  consists of (i)  3,000,000  shares of
preferred  stock,  without par value,  issuable in series,  of which, as of
February 6, 1998,  500,000  shares have been  designated as Series A Junior
Participating  Preferred  Stock  ("SPX  Series A  Preferred  Stock") but no
shares  were  issued and  outstanding,  and (ii)  50,000,000  shares of SPX
Common  Stock,  of which,  as of February 6, 1998,  12,560,500  Shares were
issued and outstanding.

     Each outstanding  share of SPX Common Stock carries with it a Right to
purchase,   upon  the   occurrence  of  certain   specified   events,   one
one-thousandth  of a share of SPX Series A Preferred Stock. See "Comparison
of Rights of  Holders  of SPX Common  Stock and  Holders  of  Shares--SPX's
Rights Plan."

     For  information  relating  to  ownership  of Common  Stock by certain
beneficial  owners and directors and executive  officers of SPX as a group,
see the SPX 1997 Annual  Meeting  Proxy  Statement.  As of March 14,  1997,
SPX's  directors  and  executive  officers  as a group  beneficially  owned
684,748 shares,  or approximately  4.7% of the then outstanding  shares, of
SPX  Common  Stock.  Immediately  following  consummation  of the  Proposed
Business  Combination  and after  giving  effect to the issuance of the SPX
Common Stock in the  transaction,  shareholders  of the Company (other than
SPX) would own  approximately  70% of the outstanding  shares of SPX Common
Stock, and SPX's present directors, executive officers and their affiliates
as a group would own approximately  1.4% of the then outstanding  shares of
SPX Common Stock.

     For  additional  information  concerning the capital stock of SPX, see
"Description of SPX Capital Stock."

THE EXCHANGE AGENT

     [        ] has been appointed exchange agent (the "Exchange Agent") in
connection with the Offer.  The Letter of Transmittal (or facsimile  copies
thereof)  and  certificates  for  Shares  should be sent by each  tendering
shareholder of Shares or his or her broker,  dealer,  bank or other nominee
to the Exchange  Agent at one of the  addresses set forth on the back cover
of this Prospectus.

REQUESTS FOR ASSISTANCE AND ADDITIONAL COPIES

     Requests for  information  or assistance  concerning  the Offer may be
directed to the Dealer Manager or the Information Agent at their respective
addresses  set forth on the back  cover of this  Prospectus.  Requests  for
additional  copies of this Prospectus and the Letter of Transmittal  should
be directed to the Information Agent.

MARKET PRICES AND DIVIDENDS

     SPX Common Stock is listed and  principally  traded on the NYSE (under
the symbol  "SPW") and is also  listed on the PE. The Shares are listed and
principally  traded on the NYSE  (under the symbol  "ECH"),  the PE and the
International Stock Exchange in London. The following table sets forth, for
the periods indicated, the high and low sale prices per share of SPX Common
Stock and per Share as reported on the NYSE Composite Tape.

<TABLE>
<CAPTION>
                                                       SPX COMMON STOCK                               SHARES
                                              -----------------------------------   ----------------------------------------
                                         High             Low         Dividends        High           Low        Dividends
                                         ----             ---         ---------        ----           ---        ---------
<S>                                     <C>             <C>              <C>          <C>            <C>           <C>  
1995
   First Quarter..................      17-3/8          14-1/4           .10          38-1/2         29-7/8        0.190
   Second Quarter.................      15-1/8          10-3/4           .10          38-3/4           34          0.205
   Third Quarter..................        16            11-1/8           .10          39-5/8         33-7/8        0.205
   Fourth Quarter.................        17            14-1/8           .10          39-1/2         33-7/8        0.205
1996
   First Quarter..................      18-1/8          13-5/8           .10          38-3/4         32-5/8        0.205
   Second Quarter.................      27-1/8            18             .10          37-7/8         33-3/8        0.220
   Third Quarter..................      31-5/8          21-5/8           .10          37-5/8         29-3/4        0.220
   Fourth Quarter.................      40-1/2          26-7/8           .10          34-1/4         30-1/4        0.220
1997
   First Quarter..................      49-3/4          37-3/8           .10          35-1/4         29-1/2        0.220
   Second Quarter.................      70-5/8          41-7/8            -           36-1/2         31-1/8        0.225
   Third Quarter..................      65-3/4            49              -           38-9/16        33-5/8        0.225
   Fourth Quarter.................      70-3/8          58-7/16           -           36-5/8        29-13/16       0.225
1998
   First Quarter
      (through February 13, 1998).      76-1/8          65-3/16           -           39-5/8         34-1/2        0.225

</TABLE>

     On February  13,  1998,  the last full  trading day prior to the first
public  announcement  by SPX  of the  Proposed  Business  Combination,  the
reported  high and low sale prices per share and closing price per share of
SPX Common Stock and per Share on the NYSE were as follows:

                                            High           Low           Close
                                            ----           ---           -----
The Company..........................      39-1/4         38-1/2        38-7/8
SPX..................................      75-5/8         74-3/4        75-1/16

     On  ___________,  1998, the last full trading day prior to the date of
this  Prospectus,  the  reported  high and low sale  prices  per  share and
closing  price per share of SPX Common Stock and per Share on the NYSE were
as follows:

                                            High           Low           Close
                                            ----           ---           -----
The Company..........................      [    ]         [    ]        [    ]
SPX..................................      [    ]         [    ]        [    ]

     STOCKHOLDERS ARE URGED TO OBTAIN CURRENT MARKET  QUOTATIONS FOR SHARES
OF SPX COMMON STOCK AND FOR THE SHARES.


                      COMPARATIVE PER SHARE DATA
                             (unaudited)

     The following table presents  historical per share data of SPX and the
Company  and pro  forma  combined  per  share  data as if the Offer and the
Merger had occurred as of September 1, 1996  assuming an Exchange  Ratio of
0.4796.  The table also  presents the Company's  pro forma  equivalent  per
share data.  See "Selected  Historical  Financial  Data of SPX,"  "Selected
Historical Financial Data of the Company," and "Selected Pro Forma Combined
Financial  Data"  included  elsewhere  herein  for  additional  information
regarding this pro forma information. The pro forma combined per share data
is intended  for  information  purposes,  and does not purport to represent
what the combined entity's results of continuing  operations would actually
have been had the  transaction  in fact  occurred  at an earlier  date,  or
project the results for any future date or period.  The  selected pro forma
combined financial data do not give effect to any restructuring  costs, nor
to  any  cost  savings  that  could  result  from  the  combination  of the
companies.  Any  integration and  rationalization  of the operations of the
Company may include  certain  costs which may in turn result in a charge to
earnings.  Such a charge,  which cannot now be quantified,  may be material
and would be recognized in the period in which such a restructuring occurs.
SPX management believes that the combined company can achieve approximately
$125 million of annualized  expense savings,  which have not been reflected
in the pro forma combined  financial data. Upon  consummation of the Offer,
the actual  financial  position and results of  operations  of the combined
company  will differ,  perhaps  significantly,  from the pro forma  amounts
reflected  herein  due  to a  variety  of  factors,  including  changes  in
operating  results between the date of the pro forma financial  information
and the date on which the Offer is consummated and  thereafter,  as well as
the factors discussed under "Risk Factors."

<TABLE>
<CAPTION>
                                                                              The Company
                                       SPX       The Company    Pro Forma      Pro Forma
                                    Historical    Historical   Combined (a)   Equivalent (b)
                                    ----------    ----------   ------------   --------------
<S>                                 <C>           <C>           <C>           <C>
Income (loss) per common share
from continuing operations 
(primary) (c):
  Three months ended
   November 30, 1997                $  0.80       $  0.52       $  0.54       $  0.26
  Year ended August 31, 1997          (3.56)        (0.75)        (3.84)        (1.84)
Dividends per common share (d):
  Three months ended
   November 30, 1997                    --           0.225          --            --
  Year ended August 31, 1997           0.30          0.89          0.30          0.14
Book value per common share:
   November 30, 1997                   1.08         14.84         27.72         13.29
   August 31, 1997                     1.78         14.60         26.24         12.59

Pro forma income (loss) from
continuing operations under
FAS 128:
 Three months ended 
 November 30, 1997
  Basic                                0.83          0.52          0.55          0.26
  Diluted                              0.80          0.52          0.54          0.26
 Year ended August 31, 1997
  Basic                               (3.65)        (0.75)        (3.87)        (1.86)
  Diluted                             (3.56)        (0.75)        (3.84)        (1.84)

<FN>
(a)  See "Selected Pro Forma Combined Financial Data of SPX and the Company."

(b)  The Company pro forma equivalent per share information  represents the
     pro forma  combined per share  information  multiplied  by an Exchange
     Ratio of 0.4796.

(c)  Excluding  special  charges and gains,  pro forma combined  income per
     common  share  from  continuing  operations  would have been $1.56 per
     share ($0.75 per equivalent share) for the year ended August 31, 1997.
     Additionally,  SPX  management  believes that the combined  entity can
     achieve  approximately  $125 million of  annualized  expense  savings,
     which  have not  been  reflected  in the pro  forma  results.  If such
     savings were assumed to be achieved and special  charges and gains are
     excluded,  pro forma combined  income per common share from continuing
     operations  would  have been  $0.99 per share  ($0.47  per  equivalent
     share),  and $3.29 per share  ($1.58 per  equivalent  share),  for the
     three months ended November 30, 1997 and for the year ended August 31,
     1997, respectively.

(d)  In April of 1997, SPX eliminated its quarterly and dividend and stated
     that future  distributions to shareholder would be in the form of open
     market  purchases  of SPX Common  Stock  when  deemed  appropriate  by
     management.

</FN>
</TABLE>


                SELECTED HISTORICAL FINANCIAL DATA OF SPX
                    (in millions, except per share data)

     The  following  table  presents the selected  historical  statement of
income and other  financial  data of SPX. The financial  data as of and for
the nine months  ended  September  30, 1997 and 1996 have been derived from
the unaudited quarterly financial  statements of SPX. The financial data as
of and for the fiscal  years ended  December 31, have been derived from the
audited  financial  statements of SPX. In the opinion of SPX's  management,
the unaudited  financial  statements  from which the financial data for the
nine months ended  September  30, 1997 and 1996 have been derived have been
prepared on a basis  consistent with the audited  financial  statements and
contain the adjustments,  consisting only of normal recurring  adjustments,
necessary  to  present  fairly  the  information  set  forth  therein.  The
operating  results for the nine  months  ended  September  30, 1997 are not
necessarily  indicative  of the results  that may be expected  for the year
ended December 31, 1997. SPX's selected historical financial data should be
read in conjunction  with, and are qualified in their entirety by reference
to, the historical  financial  statements  (and related notes) of SPX which
are  incorporated  by reference  herein.  See "Available  Information"  and
"Incorporation  of Documents by  Reference."  See  "Business of SPX and the
Company-SPX-Subsequent  Developments" for a discussion of SPX's 1997 fourth
quarter  special  charge and 1997 reported  results of  operations  for the
fourth quarter and full year period.

<TABLE>
<CAPTION>
                     As of and for the
                     Nine months ended
                       September 30,                       As of and for the year ended December 31,
                       -------------         --------------------------------------------------------------------
                     1997(a)      1996(b)       1996(b)        1995         1994(c)      1993(d,e)       1992
                 ------------  ------------  ------------  ------------  ------------  ------------  ------------
<S>              <C>           <C>           <C>           <C>           <C>           <C>           <C>
Statement of
income data:
- --------------
Revenues         $ 680.6(a)    $ 857.9       $ 1,109.4     $ 1,098.1     $ 1,079.9     $ 747.2       $ 801.2
Cost of
 products sold     492.6         655.8           850.1         853.5         821.5       508.0         533.2
Selling,
 general and
 admin.            129.7         142.9           186.5         194.5         198.0       204.1         209.9
Other
 operating
 expenses,
 net (f)             2.8           1.4             1.9           8.3           2.9        53.4(c)        7.8
Special
 charges (g)         6.5(h)       15.9(i)         87.9(i)       10.7(i)        ---        27.5(j)        ---
                 ------------  ------------  ------------  ------------  ------------  ------------  ------------
Operating
 income (loss)      49.0          41.9           (17.0)         31.1          57.5       (45.8)         50.3
Other expense
 (income), net     (73.1)(a)       0.5            (0.7)         (3.0)          0.1      (102.9)(e)       1.2
Interest
 expense, net       10.6          24.9            31.8          35.7          35.2        15.9          15.1
                 ------------  ------------  ------------  ------------  ------------  ------------  ------------
Income (loss)
 before income
 taxes             111.5          16.5           (48.1)         (1.6)         22.2        41.2          34.0
Income taxes        55.0           6.4             7.6          (0.2)          9.1        28.1          13.4
                 ------------  ------------  ------------  ------------  ------------  ------------  ------------
Income (loss)
 from
 continuing
 operations      $  56.5       $  10.1       $   (55.7)    $    (1.4)    $    13.1     $  13.1       $  20.6
Discontinued
 operation (k)       ---           ---             ---          (2.8)          1.0         2.1           ---
Cumulative
 effect of
 accounting
 changes (l)         ---           ---             ---           ---           ---       (31.8)         (5.7)
Extraordinary
 items,
 net of
 taxes (m)         (10.3)         (1.1)           (6.6)         (1.1)          ---       (24.0)          ---
                 ------------  ------------  ------------  ------------  ------------  ------------  ------------
Net income
 (loss)          $  46.2       $   9.0       $   (62.3)    $    (5.3)    $    14.1     $ (40.6)      $  14.9
                 ============  ============  ============  ============  ============  ============  ============
Primary
 income (loss)
 from
 continuing
 operations
 per share       $   4.17      $   0.73      $    (3.98)   $    (0.10)   $     1.02    $   1.04       $  1.48
Weighted
 average
 number of
 common shares
 outstanding        13.547(n)     13.881          13.998        13.174        12.805      12.604        13.856
Dividends per
 share           $   0.10(n)   $   0.30      $     0.40    $     0.40    $     0.40    $   0.40       $  0.40
Pro forma
 income (loss)
 from
 continuing
 operations
 per share
 under FAS 128:
  Basic          $   4.34      $   0.74      $    (4.04)   $    (0.10)   $     1.02    $   1.04       $  1.48
  Diluted        $   4.17      $   0.73      $    (3.98)   $    (0.10)   $     1.02    $   1.04       $  1.48
Other financial
data:
- ---------------
 EBITDA(o)       $   74.8      $  89.6       $   111.7     $    85.3     $    96.0     $   6.1        $ 75.6
 
 Total assets       540.9        806.7           616.0         831.4         929.0     1,024.4         560.3
 Total debt         196.2        285.8           229.3         319.8         415.2       430.2         174.3
 Shareholders'
  equity             14.6(n)     173.7           105.9         162.2         158.7       145.4         185.5
 Capital
  expenditures       15.6         12.0            20.2          31.0          48.5        15.1          20.4
 Depreciation
  and amort.         19.3         31.8            40.8          43.5          38.5        24.4          25.3


Note: The accompanying notes are an integral part of this selected
      historical financial data.

           NOTES TO SELECTED HISTORICAL FINANCIAL DATA OF SPX
                    (in millions, except per share data)

<FN>
(a)  During the nine  months  ended  September  30,  1997,  SPX sold its
     Sealed Power division for $223 in gross cash proceeds. SPX recorded
     a pretax gain of $71.9,  or $31.2  after-tax.  Annual 1996 revenues of
     this  division  were  approximately  $230.  See  "Pro  Forma  Adjusted
     Historical Financial Data of SPX."

(b)  During  1996,  SPX sold its Hy-Lift  division for  approximately  $15.
     Annual 1995 revenues of this division were approximately $45. See "Pro
     Forma Adjusted Historical Financial Data of SPX."

(c)  Effective  December 31, 1993, SPX acquired the balance of Sealed Power
     Technologies  ("SPT")  for $39.  SPX  previously  owned 49% of SPT and
     accounted  for its  investment  using the  equity  method.  SPT's 1993
     revenues were $392. As a result of this acquisition,  SPX was required
     to recognize its share of SPT's losses, $26.9, in 1993. Also, in 1993,
     SPX initiated consolidation of Sealed Power Europe Limited Partnership
     which  required  recognition of cumulative  losses of the  partnership
     since its  inception,  resulting in a charge of $21.5.  These  charges
     have been included in other operating expenses, net.

(d)  During 1993, SPX acquired Allen  Testproducts  and its related leasing
     company  for $102.  Annual  1992  revenues  of this  acquisition  were
     approximately $83.

(e)  During  1993,  SPX divested  its Sealed  Power  Replacement  and Truth
     divisions for a gain of $105.4 ($64.2 after-tax). Annual 1992 revenues
     of these divisions were approximately $247.

(f)  Other   operating   expenses,    net,   include    goodwill/intangible
     amortization, minority interest, and earnings from equity interests.

(g)  Special charges include  certain legal costs,  restructuring  charges,
     and write-off of goodwill.

(h)  During the nine months ended  September 30, 1997,  SPX recorded a $6.5
     charge  ($4.2  after-tax)  to record  anticipated  future  legal costs
     associated with ongoing patent litigation.

(i)  The   restructuring   charges  in  1996  and  1995  include  costs  to
     consolidate  five  Service  Solution  divisions  and a  related  early
     retirement program, costs to downsize several international locations,
     costs of an additional domestic early retirement program, and costs to
     close a European  foundry.  Also during 1996,  SPX  recognized a $67.8
     goodwill  write-off,  with no related tax  benefit.  The  goodwill was
     related to the 1988 and 1993  acquisitions of Bear Automotive  Company
     and of Allen Testproducts, respectively.

(j)  During 1993,  SPX recognized a $27.5 ($18.5  after-tax)  restructuring
     charge  to  combine   its  Bear   Automotive   operation   with  Allen
     Testproducts.

(k)  During  1995,  SPX sold SPX Credit  Corporation  and recorded a pretax
     loss of $4.8 ($3.0 after-tax). The financial results of this operation
     are  included  as  a  discontinued   operation  through  the  date  of
     divestiture.

(l)  During 1993, SPX adopted new accounting  methodology  for its ESOP and
     reflected  its 49% share of SPT's  adoption of SFAS No. 106  regarding
     accounting for postretirement  benefits other than pensions.  In 1992,
     SPX adopted new accounting  methodology  for  postretirement  benefits
     other than pensions and for income taxes.

(m)  During the nine months  ended  September  30,  1997,  SPX tendered for
     substantially   all  ($126.7)  of  its   outstanding   11-3/4%  senior
     subordinated  notes. SPX recorded an extraordinary item, net of taxes,
     of $10.3  for the  costs to  purchase  the  notes.  During  1996,  SPX
     purchased $99.9 of these notes and recorded an extraordinary item, net
     of taxes,  of $6.6 for the costs to purchase  the notes.  During 1995,
     SPX purchased $31.7 of these notes and recorded an extraordinary item,
     net of taxes,  of $1.1 for the costs to  purchase  the  notes.  During
     1993,  SPX recorded the costs  associated  with  prepayment of certain
     company  and SPT  indebtedness  totaling  $24.0,  net of taxes,  as an
     extraordinary item.

(n)  During the nine months ended  September 30, 1997, SPX purchased  2.147
     common shares through a Dutch Auction self-tender offer for $56.00 per
     share. As of September 30, 1997, SPX had purchased an additional 0.376
     shares through open market purchases.  Also, concurrent with the Dutch
     Auction, SPX announced the elimination of quarterly cash dividends and
     stated that future  distributions to shareholders would be in the form
     of open market purchases of SPX Common Stock, when deemed  appropriate
     by management.

(o)  EBITDA  represents  operating  income (loss) before  special  charges,
     depreciation  and  amortization.  EBITDA is not presented herein as an
     alternative  measure of  operating  results,  cash flow (as defined by
     generally  accepted  accounting  principles) or liquidity and does not
     necessarily  represent the cash available to fund cash requirements of
     the combined  company.  EBITDA is instead  included  because it is one
     measure  used by certain  investors  as an  indicator  of a  company's
     operating performance and its ability to service indebtedness.
</FN>
</TABLE>


             SELECTED HISTORICAL FINANCIAL DATA OF THE COMPANY
                    (in millions, except per share data)

     The following table presents selected  historical  statement of income
and other  financial data of the Company.  The financial data as of and for
the three  months  ended  November 30, 1997 and November 30, 1996 have been
derived  from the  unaudited  financial  statements  of the  Company in the
Company's  Quarterly  Reports  on Form  10-Q  for the  three  months  ended
November  30, 1997 and 1996.  The  financial  data as of and for the fiscal
years  ending  August 31,  have been  derived  from the  audited  financial
statements  of the Company and  selected  financial  data  presented in the
Company's 1997 Form 10-K. The operating  results for the three months ended
November 30, 1997 are not necessarily indicative of the results that may be
expected  for the year  ended  August  31,  1998.  The  Company's  selected
historical  financial  data  should be read in  conjunction  with,  and are
qualified  in their  entirety by  reference  to, the  historical  financial
statements  (and related  notes) of the Company which are  incorporated  by
reference  herein  (except  for the  report  of the  Company's  independent
accountants incorporated by reference in the Company's 1997 Form 10-K which
is  not  incorporated  herein  by  reference  because  the  consent  of the
Company's  independent   accountants  has  not  yet  been  obtained).   See
"Available Information" and "Incorporation of Documents by Reference."


<TABLE>
<CAPTION>

                                                    As of and
                                                    for Three
                                                   months ended
                                                   November 30,            As of and for the fiscal Year ended August 31,
                                             ----------------------- --------------------------------------------------------- 
                                               1997         1996        1997       1996         1995       1994        1993
                                               ----         ----        ----       ----         ----       ----        ----
Statement of income data:
- -------------------------
<S>                                          <C>          <C>        <C>          <C>         <C>        <C>         <C>
Net sales                                    $  889.5     $  850.9   $ 3,568.6    $ 3,128.7   $ 2,717.9  $ 2,229.5   $ 1,944.5
Cost of goods sold                              671.1        635.0     2,707.1      2,309.0     1,932.5    1,571.3     1,378.0
Selling and administrative expenses             159.2        149.2       640.1        574.6       531.3      468.5       420.4
Repositioning and other special charges (a)         -            -       254.1            -           -          -           -
Gain on sales of businesses (b)                     -            -       (28.6)           -           -          -           -
                                             --------     --------   ---------    ---------   ---------  ---------   ---------
Income (loss) from operations                    59.2         66.7        (4.1)       245.1       254.1      189.7       146.1
Interest expense, net                             9.8          8.0        40.6         32.9        23.6       11.7         8.5
                                             --------     --------   ---------    ---------   ---------  ---------   ---------
Income (loss) before taxes                       49.9         58.7       (44.7)       212.2       230.5      178.0       137.6
Provision for taxes                              16.8         20.6         2.2         70.0        76.1       56.9        44.0
                                             --------     --------   ---------    ---------   ---------  ---------   ---------
Income (loss) before cumulative                                                             
 effect of accounting change                     32.6         38.1       (46.9)       142.2       154.4      121.1        93.6
Cumulative effect of accounting change (c)          -            -           -            -           -        2.6           -
                                             --------     --------   ---------    ---------   ---------  ---------   ---------
Net income (loss)                            $   32.6     $   38.1   $   (46.9)   $   142.2    $  154.4   $  123.7   $    93.6
                                             ========     ========   ==========   =========    ========   ========   =========
Average shares outstanding                     63.132       62.347      62.601       61.919      59.476    58.996       58.560
Primary net income (loss) per share (d)      $   0.52     $   0.61   $   (0.75)   $    2.30    $   2.60  $   2.10    $    1.60
Dividends per share                          $  0.225     $   0.22   $    0.89    $    0.85    $   0.79  $   0.73    $    0.70
                                                                                            
Other financial data:                                                                       
- --------------------                                                                        
EBITDA (e)                                   $   88.9     $   93.9   $   335.3    $   336.0    $  330.7  $  253.9    $   205.8
Total assets                                  2,365.5      2,453.8     2,374.2      2,130.8     1,961.0   1,577.4      1,263.3
Total debt                                      761.4        769.9       757.9        495.9       507.1     308.3        164.2
Shareholders' equity                            937.0      1,039.5       913.7      1,008.9       909.3     799.0        713.8
Capital expenditures                             31.5         28.1       149.2        104.4       103.9      73.8         41.5
Depreciation and amortization                    29.7         27.2       113.9         90.9        76.6      64.2         59.7
                                                                                         

Note:  The accompanying notes are an integral part of this
       selected historical financial data.


      NOTES TO SELECTED HISTORICAL FINANCIAL DATA OF THE COMPANY
                    (in millions, except per share data)

<FN>
(a)  During the  Company's  fourth  quarter  of fiscal  1997,  the  Company
     recorded  repositioning  and other special charges of $254.1,  pretax.
     The  repositioning   charge  included  expenses  related  to  facility
     realignments   and   rationalizations,   and  the  write-down  to  net
     realizable value of businesses to be disposed.  In addition,  goodwill
     associated  with  brand  names  no  longer  in use  was  written  off,
     inventory  related to discontinued and rationalized  product lines was
     written down, property, plant and equipment idled by facility closures
     and product line  rationalizations were reduced, and other investments
     and deferred customer acquisition costs were written off.

(b)  During fiscal 1997,  the Company sold two divisions for gross proceeds
     of $75.9. The Company reported a pretax gain of $28.6.

(c)  During fiscal 1994, the Company  adopted a new accounting  methodology
     for income taxes.

(d)  The Company indicates that pro forma diluted loss per share would have
     been less than the  reported  loss per share for the year ended August
     31, 1997.

(e)  EBITDA  represents  operating income (loss) before  repositioning  and
     other special charges,  gain on sales of businesses,  depreciation and
     amortization. EBITDA is not presented herein as an alternative measure
     of  operating  results,  cash flow (as defined by  generally  accepted
     accounting principles) or liquidity and does not necessarily represent
     the cash available to fund cash  requirements of the combined company.
     EBITDA is instead  included  because it is one measure used by certain
     investors as an indicator of a company's operating performance and its
     ability to service indebtedness.
</FN>
</TABLE>


 SELECTED CONDENSED PRO FORMA COMBINED FINANCIAL DATA OF SPX AND THE COMPANY
                              (unaudited)
                 (in millions, except per share data)

     The following table presents selected pro forma combined  statement of
income and other financial data of SPX and the Company.  The information is
presented as if the Offer and the Merger of SPX and the Company occurred on
September 1, 1996 for  statement of income and related data and on November
30, 1997 for balance  sheet and related  data.  This pro forma data assumes
that the Offer and the Merger are effected by the exchange of shares of SPX
Common  Stock and cash for  Shares.  The pro forma  data  assumes  SPX will
exchange  0.4796 shares of SPX Common Stock and $12.00 cash for each Share,
whereby  30.731  million  shares of SPX Common Stock and $768.9 of cash are
issued in exchange for all outstanding  Shares and equivalent  Shares.  The
Offer and the Merger will be accounted for as a reverse  acquisition as the
shareholders of the Company will own a majority of the  outstanding  shares
of SPX Common Stock upon completion of the  transaction.  Accordingly,  for
accounting purposes, SPX is treated as the acquired company and the Company
is  considered  to be the  acquiring  company.  The purchase  price will be
allocated  to the  assets  and  liabilities  assumed  of SPX based on their
estimated  fair  market  values  at the  acquisition  date.  Under  reverse
acquisition  accounting,  the  purchase  price  of SPX is based on the fair
market  value of SPX's Common  Stock at the date of  acquisition.  The cash
portion of the Offer and the Merger will be accounted  for as a dividend by
SPX.  SPX's  financial  position  and  results  of  operations  will not be
included in the Company's  consolidated  financial  statements prior to the
date the Merger is consummated. See "Pro Forma Condensed Combined Financial
Data" included elsewhere herein for additional  information  regarding this
pro forma information.

     The  selected  pro  forma  combined  financial  data is  intended  for
information  purposes,  and does not purport to represent what the combined
entity's  results of  continuing  operations  or financial  position  would
actually have been had the transaction in fact occurred at an earlier date,
or project the results for any future date or period.

     The selected pro forma combined financial data does not give effect to
any restructuring costs, nor to any cost savings that could result from the
combination of the companies.  Any integration and  rationalization  of the
operations of the Company may include  certain costs which may in turn
result  in a  charge  to  earnings.  Such a  charge,  which  cannot  now be
quantified,  may be material and would be recognized in the period in which
such a restructuring  occurs. SPX management  believes that SPX can achieve
approximately  $125 of  annualized  expense  savings,  which  have not been
reflected in the pro forma combined  financial data.  Upon  consummation of
the Offer, the actual  financial  position and results of operations of SPX
will differ,  perhaps  significantly,  from the pro forma amounts reflected
herein due to a variety of factors,  including changes in operating results
between  the date of the pro forma  financial  information  and the date on
which the  offer is  consummated  and  thereafter,  as well as the  factors
discussed under "Risk Factors."


                                 As of and for the    As of and for the
                                three months ended       year ended
                               November 30, 1997 (a)  August 31, 1997 (b)
                               ---------------------  -------------------
Statement of income data (e):
- -----------------------------
Revenues                         $           1,103.2  $           4,394.0
Cost of products sold                          824.2              3,306.1
Selling, general and
 administrative expense                        202.4                812.1
Other operating expenses, net                    6.4                 25.5
Special charges and gains                          -                307.2
                                             -------              -------
Operating income (loss)          $              70.2  $             (56.9)
Other expense (income), net                     (0.4)                (2.3)
Interest expense, net                           33.8                136.7
                                 -------------------  --------------------
Income (loss) before income taxes               36.8               (191.3)
Provision (benefit) for
  income taxes                                  13.5                (19.7)
                                 -------------------  --------------------
Income (loss) before
  extraordinary item (c)         $              23.3  $            (171.6)
                                 ===================  ====================
Primary income (loss) per
  share (c)                      $              0.54  $             (3.84)
Weighted average number of
 common shares outstanding                    43.129               44.664
Dividends per share (d)          $                 -  $              0.30
Pro forma income (loss) per
share under
 FAS 128:
  Basic                          $              0.55  $             (3.87)
  Diluted                        $              0.54  $             (3.84)

Other financial data:
- --------------------
EBITDA (e)                       $             112.6  $             415.8
Total assets                                 4,007.6              4,017.1
Total debt                                   1,779.1              1,776.7
Shareholders' equity                         1,195.5              1,172.2
Capital expenditures                            36.5                166.7
Depreciation and amortization                   42.4                165.5


Note: The accompanying notes are an integral part of this selected pro
      forma combined financial data.


       NOTES TO SELECTED PRO FORMA CONDENSED COMBINED FINANCIAL DATA
                          OF SPX AND THE COMPANY
                                (unaudited)
                    (in millions, except per share data)

(a)  Pro forma  information  as of and for the three months ended  November
     30, 1997 includes the actual  historical  results of SPX for the three
     months ended September 30, 1997 (the fiscal quarter end of SPX nearest
     to November 30, 1997) and the actual historical results of the Company
     as of and for the three months ended November 30, 1997.

(b)  Pro forma  information for the year ended August 31, 1997 includes the
     pro forma  adjusted  historical  results of SPX for the twelve  months
     ended June 30, 1997 (the fiscal  twelve month period of SPX nearest to
     August 31, 1997) and the actual historical  results of the Company for
     the year ended  August 31,  1997.  The pro forma  adjusted  historical
     results of SPX for the twelve months ended June 30, 1997 reflect SPX's
     February  1997  disposition  of the  Sealed  Power  division  and  its
     November  1996  disposition  of  the  Hy-Lift  division,  as  if  such
     dispositions  occurred  on July  1,  1996.  See  "Pro  Forma  Adjusted
     Historical Financial Data of SPX," presented elsewhere herein.

(c)  Excluding   special  charges  and  gains,   pro  forma  income  before
     extraordinary  item would have been $69.5,  or $1.56 per share for the
     year ended August 31, 1997. Additionally, SPX management believes that
     the  combined  entity can  achieve  approximately  $125 of  annualized
     expense  savings,  which  have not  been  reflected  in the pro  forma
     results. If such savings were assumed to be achieved, pro forma income
     before  extraordinary  item and  special  charges and gains would have
     been $42.7, or $0.99 per share,  and $147.0,  or $3.29 per share,  for
     the three months ended November 30, 1997 and for the year ended August
     31, 1997, respectively.

(d)  Represents the historical quarterly cash dividend per share of SPX for
     the periods presented.  In April of 1997, SPX eliminated its quarterly
     cash  dividend and stated that future  distributions  to  shareholders
     would be in the form of open market purchases of SPX Common Stock when
     deemed appropriate by management.

(e)  EBITDA  represents  operating income (loss) before special charges and
     gains,  depreciation and amortization.  EBITDA is not presented herein
     as an alternative measure of operating results,  cash flow (as defined
     by generally accepted accounting principles) or liquidity and does not
     necessarily  represent the cash available to fund cash requirements of
     the combined  company.  EBITDA is instead  included  because it is one
     measure  used by certain  investors  as an  indicator  of a  company's
     operating performance and its ability to service indebtedness.

                                RISK FACTORS

     In addition to the other information in this Prospectus, the following
are  certain  factors  that  should be  considered  by holders of Shares in
evaluating the Offer and an investment in SPX Common Stock.

FIXED EXCHANGE RATIO DESPITE CHANGE IN RELATIVE STOCK PRICES

     The Consideration includes 0.4796 Share of SPX Common Stock. This is a
fixed  exchange ratio and will not be adjusted in the event of any increase
or  decrease in the market  price of either SPX Common  Stock or the Shares
between the date hereof and the  Expiration  Date.  The price of SPX Common
Stock on the  Expiration  Date may be higher or lower than its price on the
date of this  Prospectus.  Such  variations may be the result of changes in
the  business,  operations  or  prospects  of SPX or  the  Company,  market
assessments  of the likelihood  that the Offer will be consummated  and the
timing  thereof,  general market and economic  conditions or other factors.
The  Expiration  Date  will  occur  as soon as  practicable  following  the
satisfaction or waiver (where  permissible) of the conditions to the Offer.
Tendering  shareholders  of the Company are urged to obtain  current market
quotations for SPX Common Stock and the Shares. See "The  Offer--Conditions
of the Offer" and "Market Prices and Dividends."

LEVERAGE

     After  consummation  of the  Offer  and the  Merger,  SPX will be more
highly  leveraged  than  are  either  SPX or the  Company,  or  both of the
companies combined,  at present, with substantial debt service obligations,
including principal and interest obligations,  with respect to indebtedness
of as much as $2.4 billion. As such, SPX may be particularly susceptible to
adverse  changes in its  industry,  the economy and the  financial  markets
generally.   Moreover,   SPX's   conduct  of  its   business  may  be  more
circumscribed,  and  its  ability  to  incur  additional  debt  may be more
limited,  than at present by restrictive  covenants which will be contained
in agreements evidencing the Financing. In particular,  any debt incurrence
restrictions   may  limit  SPX's  ability  to  service  its  existing  debt
obligations  through additional debt financing if cash flow from operations
is  insufficient  to service  such  obligations.  The  Financing  will bear
interest  at  floating  rates,  and an  increase  in  interest  rates could
adversely affect SPX's ability to service its debt obligations.

UNCERTAINTIES IN INTEGRATING BUSINESS OPERATIONS AND ACHIEVING COST SAVINGS

     The success of the Proposed Business Combination will in large part be
dependent on the ability,  following  the Offer and the Merger,  to realize
cost  savings  and,  to a lesser  extent,  to  consolidate  operations  and
integrate processes.  While SPX believes that it can obtain cost savings of
at least $125  million in the first  year,  the  realization  of savings is
dependent  to a large  extent on the planned  reduction of headcount at the
Company.  There  can be no  assurance  that the  timing  and  magnitude  of
headcount  reductions will occur as planned. The integration of businesses,
moreover,   involves  a  number  of  risks,   including  the  diversion  of
management's  attention to the  assimilation  of the operations  from other
business  concerns,  delays or  difficulties  in the actual  integration of
operations  or systems,  and  challenges  in  retaining  customers  and key
personnel of the acquired  company.  There can be no assurance  that future
consolidated  results  will  improve as a result of the  Proposed  Business
Combination,  or that the  timing  or  extent  to which  cost  savings  and
efficiencies  anticipated by SPX will be achieved.  The pro forma financial
statements contained in this Prospectus do not include the impact, positive
or negative,  of any cost savings or  efficiencies  related to  anticipated
future actions.  The anticipated cost savings have been developed solely by
the  management of SPX and are based on SPX's best  judgments and knowledge
of the Company's  operations derived from publicly  available  information,
and in reliance on that information  being accurate and complete,  together
with SPX's knowledge and experience in the vehicle components industry.

DEPENDENCE ON KEY PERSONNEL

     SPX is dependent on the  continued  services of its  management  team,
including  John B.  Blystone,  Chairman of the Board,  President  and Chief
Executive Officer.  Although SPX believes it could replace key employees in
an orderly fashion should the need arise,  the loss of such personnel could
have a material adverse effect on SPX.

DIVIDENDS

     The Company  recently paid its 155th  consecutive  dividend.  In April
1997,  SPX  eliminated  its quarterly  cash dividend and stated that future
distributions to shareholders would be in the form of open market purchases
of SPX Common Stock when deemed  appropriate  by  management.  SPX does not
anticipate  that this policy will change.  There can be no  assurance  that
distributions to shareholders  will be permitted under SPX's new credit and
other debt agreements.

RELIANCE ON MAJOR CUSTOMERS

     Sales to GM, Ford and Chrysler  accounted for approximately  20%, 11%,
and 6% respectively of SPX's revenues for the year ended December 31, 1996.
The  loss of GM,  Ford or  Chrysler  or of any of SPX's  other  significant
customers could have a material adverse effect on SPX. There is substantial
and continuing pressure from the major OEMs to reduce costs,  including the
cost of products and services purchased from outside suppliers such as SPX.
If in the future SPX were unable to  generate  sufficient  cost  savings to
offset price reductions, SPX's gross margins could be adversely affected.

ANTI-TAKEOVER EFFECTS OF CERTAIN CHARTER, BY-LAW AND STATUTORY PROVISIONS

     Certain  provisions of SPX's  Certificate of Incorporation and By-Laws
may  inhibit  changes in control of SPX not  approved by the SPX's Board of
Directors.  These provisions  include:  (i) a staggered Board of Directors;
(ii) a prohibition on stockholder action through written consents;  (iii) a
requirement  that special  meetings of stockholders be called only by SPX's
Board of  Directors;  (iv)  advance  notice  requirements  for  stockholder
proposals and  nominations;  (v) limitations on the ability of stockholders
to amend,  alter or repeal the  By-Laws;  and (vi) the  authority  of SPX's
Board of Directors to issue, without shareholder approval,  preferred stock
with such terms as SPX's Board of Directors may determine. SPX will also be
afforded the protections of Section 203 of the Delaware General Corporation
Law, which could have similar effects. See "Comparison of Rights of Holders
of Shares and SPX Common Stock."

                           REASONS FOR THE OFFER

     On February 17, 1998, SPX delivered a letter to the Board of Directors
of the Company  proposing to enter into the Proposed  Business  Combination
with the  Company,  pursuant to which  shareholders  of the  Company  would
receive  for each  Share the  Consideration  in the amount of $12.00 net in
cash and 0.4796 share of SPX Common  Stock.  Based on the $75-1/16  closing
price of a share of SPX Common Stock on the NYSE Composite Tape on February
13,  1998,  the last trading  date  preceding  the date of the first public
announcement of the Proposed  Business  Combination,  the  Consideration of
$48.00  represents  a 23% premium  over the $38-7/8  price at which a Share
closed on the NYSE  Composite  Tape on February  13, 1998 and a 32% premium
over the average  trading  price at which a Share closed on the NYSE during
the 30 trading days preceding that date. Immediately following consummation
of the  Proposed  Business  Combination  and  after  giving  effect  to the
issuance of the SPX Common Stock in the  transaction,  the  shareholders of
the  Company  (other  than  SPX)  would own  approximately  70% of the then
outstanding shares of SPX Common Stock.

     With  its  letter  to the  Board  of  Directors  of the  Company,  SPX
delivered a proposed merger  agreement to the Company in  contemplation  of
arriving  at a  negotiated  transaction.  That  agreement  provides  for  a
single-step  "cash election" merger of the Company into a subsidiary of SPX
in which  each  outstanding  Share  would be  converted  into the  right to
receive  the  Consideration  (with  shareholders  able to elect to  receive
instead all cash, in the amount of $48.00 per Share,  or all stock,  in the
amount of 0.6395 share of SPX Common Stock per Share, subject to proration)
in a partially tax-free  reorganization.  However, because of the Company's
negative  responses to SPX's  approaches  over the several  months prior to
February  17,  1998  (see  "Background"),  SPX  also  filed a  Registration
Statement,  of which this Prospectus is part, with the Commission,  so that
the Proposed Business Combination may be effected by means of the Offer, to
be  followed by the Merger in which each Share not  purchased  in the Offer
would  be  converted  into the  right to  receive  the  Consideration.  The
exchange of Shares for the  Consideration  in the Offer and the Merger will
be a  taxable  transaction.  See "The  Offer--Certain  Federal  Income  Tax
Consequences."

     The  Company  has not  provided  SPX with  information  that  might be
relevant to the structuring of the Merger. SPX therefore reserves the right
to change the structure of the Merger upon receipt of such information.  If
the  Merger  is  consummated,  the  Company  will  become  a  wholly  owned
subsidiary  of SPX. If the Minimum  Tender  Condition is satisfied  and the
other  Offer   Conditions   are  satisfied  or  waived  and  the  Offer  is
consummated,  SPX will own at least 66-2/3% of the outstanding  Shares, and
SPX will have sufficient  voting power in the Company to approve the Merger
independent of the votes of any other shareholders of the Company.

     SPX believes that the Offer is in the best  interests of the Company's
shareholders  because,  among other things,  the  Consideration  will allow
shareholders  of the  Company to realize a  substantial  premium  for their
Shares in cash immediately,  while  continuing,  through their ownership of
SPX Common  Stock,  to  participate  in the future  growth of the  combined
companies.

                          BACKGROUND OF THE OFFER

     In February  1997,  John B.  Blystone,  Chairman  and Chief  Executive
Officer  of SPX,  met with  Trevor O.  Jones,  then  Chairman  and  interim
President and Chief Executive  Officer of the Company,  to propose that the
two companies explore a business  combination.  Mr. Jones did not follow up
on this meeting.  In November 1997, Mr. Blystone met for several hours with
Larry W.  McCurdy,  who had  succeeded  Mr.  Jones as  President  and Chief
Executive Officer, to discuss a strategic merger between the two companies,
and on  November  24,  1997,  Patrick J.  O'Leary,  SPX's Vice  President -
Finance and Chief Financial  Officer,  met with Robert Tobey, the Company's
Vice  President  -  Corporate  Development.   These  discussions  were  not
fruitful,  and SPX was  informed  that the  Company  had no  interest  in a
business combination with SPX.

     On December  12,  1997,  Mr.  Blystone  wrote a letter to Mr.  McCurdy
setting out the strategic  rationale of a business  combination  of the two
companies   and  the  benefits  to  the  Company's   shareholders   of  the
transaction. Although the letter stated that SPX anticipated a price in the
$40's range,  Mr. Blystone advised Mr. McCurdy that SPX would be willing to
revise its  thinking if the Company  could  identify  greater  value in the
transaction. Mr. Blystone, in his letter, further suggested that the letter
be shared with the  Company's  Board of Directors  and offered to meet with
and make a  presentation  to the  Board  about any and all  aspects  of the
proposed transaction.

     On December 17, 1997, Mr. Blystone  received a letter from Mr. McCurdy
stating that Mr. McCurdy had shared Mr. Blystone's views with the Company's
Board of  Directors,  and  that  the  Company's  and the  Board's  position
remained that the Company had no interest in further discussions with SPX.

     On December 18, 1997, Mr. Blystone sent a letter to each member of the
Company's  Board enclosing a copy of his December 12 letter and reiterating
the merits of a strategic  combination.  Mr. Blystone once again offered to
meet  personally  with and make a  presentation  to the Company's  Board of
Directors.

     On December 23, 1997, Mr. Blystone  received a letter from Mr. McCurdy
advising  that the Company's  Board of Directors was of the unanimous  view
that the Company did not have an interest in pursuing discussions with SPX.

     On January 6, 1998,  SPX  notified  the  Company  that it was that day
making an HSR Filing under the HSR Act seeking to acquire up to 100% of the
voting securities of the Company.

     On January 8, 1998,  Mr. McCurdy wrote to Mr.  Blystone  acknowledging
receipt of notice of the HSR Filing and  advising  SPX that the Company and
its  advisors  stood  ready  to  aggressively   defend  its   shareholders'
interests.

     On February 17, 1998, SPX sent the Board of Directors of the Company a
letter setting forth the Proposed  Business  Combination and its merits and
reaffirming its desire to enter into a negotiated transaction.

     On the same day,  SPX filed a  Registration  Statement,  of which this
Prospectus  is  part,   with  the  Commission.   Concurrently,   SPX  filed
preliminary   solicitation   materials  with  the  Commission  for  use  in
soliciting  Demands  from the  shareholders  of the Company  that a Special
Meeting be called and held for the purpose of removing the current Board of
Directors of the Company and replacing them with SPX's nominees.  Under the
Connecticut Business Act, holders of outstanding Shares representing in the
aggregate  at least 35% of all the votes  entitled  to be cast on any issue
proposed to be considered  at the Special  Meeting have the right to demand
that a Special  Meeting be called and held. On February 17, 1998,  SPX also
delivered to the Company its Demand that the Special  Meeting be called and
held. SPX also made a written  request under the  Connecticut  Business Act
for  access  to  the  Company's   shareholder   list  for  the  purpose  of
communicating directly with the Company's shareholders.

                            THE SPECIAL MEETING

     On  February  17,  1998,  SPX filed  solicitation  materials  with the
Commission  to solicit  Demands  for the Company to call and hold a Special
Meeting,  and delivered  its Demand to the Company.  Along with its Demand,
SPX presented four proposals for consideration at the Special Meeting:  (i)
to repeal  any  provision  of the  Company's  By-Laws or  amendment  to the
Company's  By-Laws  adopted by the Board of Directors of the Company or any
Committee thereof at any time after April 3, 1997 (the date of the last set
of By-Laws  publicly filed by the Company) and before the  effectiveness of
the last of the  proposals to be voted on at the Special  Meeting;  (ii) to
vote upon a proposal to remove all of the  current  members of the Board of
Directors  of the  Company;  (iii) to vote  upon a  proposal  to amend  the
By-Laws of the  Company to fix the number of  directors  of the  Company at
five;  and (iv) to elect SPX's five  nominees  (the "SPX  Nominees") to the
Board of Directors of the Company.

     SPX has been  attempting to negotiate a  transaction  with the Company
for  close  to  a  year.  The  Company,   however,  in  past  meetings  and
correspondence with SPX has consistently  informed SPX that the Company and
its Board of Directors have no interest in pursuing discussions with SPX.

     Moreover,   the  Rights  Agreement   effectively   prevents  SPX  from
consummating the Offer and the Merger without the approval of the Company's
Board of Directors. Likewise, the Connecticut Business Act presents certain
obstacles  to the  consummation  of the Offer and the Merger  absent  Board
approval.  See "The Offer--The  Rights" and "--Conditions to the Offer" and
"Comparison of Rights of Holders of Shares and SPX Common Stock."

     SPX expects that if the SPX  Nominees  are  elected,  they will act to
facilitate the consummation of the Proposed Business  Combination,  subject
to their fiduciary duties as Directors of the Company.  More  specifically,
SPX expects that the SPX Nominees will,  subject to their fiduciary  duties
as Directors of the Company,  amend the Rights Agreement so that the Rights
Agreement  will not be applicable to the Offer or, if the Rights  Agreement
can no longer be  amended,  cause the  redemption  of the  Rights,  thereby
causing the Rights Plan  Condition to be satisfied.  Likewise,  SPX expects
that the SPX Nominees will,  subject to their fiduciary duties as Directors
of the Company, approve the Offer and the Merger or take such other actions
so that the  restrictions  contained in the Business  Combination  Statutes
will not be applicable  thereto,  thereby causing the Business  Combination
Statutes Condition to be satisfied.

     Under  the  Connecticut  Business  Act and the  Company's  By-Laws,  a
special meeting of the Company's  shareholders may be called by one or more
holders of Shares  representing  in the  aggregate  at least 35% of all the
votes  entitled to be cast on any issue  proposed to be  considered  at the
Special Meeting.  According to the Company's By-Laws, each holder of Shares
is entitled to one vote per Share held.  According  to the  Company's  1998
First  Quarter Form 10-Q,  as of December 31, 1997,  there were  63,169,129
Shares outstanding.  Based on such number (which does not take into account
any Shares that after such date may have been repurchased by the Company or
issued by the Company pursuant to outstanding options or otherwise) and the
fact that SPX owns 1,150,150  Shares and has executed a Demand with respect
to its Shares,  Demands from holders of an aggregate of at least 20,959,046
additional Shares will be required to call the Special Meeting. The By-Laws
of the Company provide that, upon written request of the requisite holders,
the  President  of the  Company  shall  call a Special  Meeting.  Following
receipt of Demands from holders of the requisite amount of Shares, SPX will
deliver the  Demands to the  Secretary  of the  Company  and  request  that
officer forthwith to cause appropriate  notice of the Special Meeting to be
given to the Company's shareholders entitled thereto.

                                 THE OFFER

GENERAL

     SPX hereby  offers,  upon the terms and subject to the  conditions set
forth  herein and in the related  Letter of  Transmittal,  to exchange  the
Consideration, in the amount of $12.00 in cash and 0.4796 of a share of SPX
Common Stock,  for each  outstanding  Share validly tendered on or prior to
the Expiration Date and not withdrawn.

     Tendering  shareholders  will not be  obligated  to pay any charges or
expenses of the Exchange Agent or any brokerage commissions.  Except as set
forth in the  Instructions to the Letter of Transmittal,  transfer taxes on
the  exchange of Shares  pursuant to the Offer will be paid by or on behalf
of SPX.

     The  purpose of the Offer is to enable SPX to obtain  control  of, and
ultimately  the entire  equity  interest  in, the  Company.  SPX  presently
intends, as soon as practicable after consummation of the Offer, to seek to
have the Company effect the Merger.  In the Merger,  each outstanding Share
(other than Shares  owned by SPX or any of its  affiliates,  Shares held in
the Company's treasury or by any subsidiary of the Company and Shares owned
by  the  Company's   shareholders  who  perfect  dissenters'  rights  under
Connecticut  law)  would  be  converted  into  the  right  to  receive  the
Consideration. See "The Merger."

     SPX's obligation to exchange the  Consideration for Shares pursuant to
the  Offer  is  conditioned  on  the  satisfaction  of the  Minimum  Tender
Condition,   the  SPX  Stockholder  Approval  Condition,  the  Rights  Plan
Condition,  the Business  Combination  Statutes  Condition,  the  Financing
Condition and the other  conditions as set forth under "Certain  Conditions
of the Offer."

     According to the  Company's  1998 First Quarter Form 10-Q, on December
31,  1997 there were  63,169,129  Shares  outstanding.  SPX owns  1,150,150
Shares.  In the event that SPX acquires  all of the Shares  pursuant to the
Offer  and the  Merger,  then  immediately  following  consummation  of the
Merger,  and after giving effect to the issuance of SPX Common Stock in the
Offer and the Merger,  shareholders  of the Company  (other than SPX) would
own approximately  70% of the then outstanding  shares of SPX Common Stock.
If  66-2/3%  of the  Shares are  purchased  in the  Offer,  such  ownership
percentage would be approximately 61% immediately following consummation of
the Offer and after  giving  effect to the  issuance of SPX Common Stock in
the Offer.

     SPX has requested use of the Company's  shareholder  list and security
position listings for the purpose of  communications  with shareholders and
disseminating  the Offer to  holders  of Shares.  This  Prospectus  and the
related Letter of Transmittal and other relevant materials may be mailed to
record  holders  of  Shares  and  may be  furnished  to  brokers,  dealers,
commercial  banks,  trust companies and similar persons whose names, or the
names of whose nominees,  appear on the shareholder list or, if applicable,
who are listed as participants  in a clearing  agency's  security  position
listing for subsequent  transmittal  to beneficial  owners of Shares by SPX
following receipt of such list or listings from the Company.

THE RIGHTS

     No separate payment will be made by SPX for the Rights pursuant to the
Offer.  Shareholders  will be  required  to tender one Right for each Share
tendered  in order to  effect a valid  tender of  Shares.  The  Rights  are
currently  evidenced by the certificates for the Shares and the tender by a
shareholder of his or her Shares prior to the Distribution Date (as defined
below)  will  also  constitute  a  tender  of the  associated  Rights.  The
"Distribution  Date" is defined as the earlier of the following  dates: (i)
the close of business on the tenth day following a public announcement that
a  person  has  acquired  beneficial  ownership  of  20%  or  more  of  the
outstanding Shares (an "Acquiring Person") or (ii) the close of business on
the tenth business day (or such later date as the Board may determine prior
to such time as any  person  becomes an  Acquiring  Person)  following  the
commencement  of a tender offer or exchange offer which would result in the
person  making  the  offer  becoming  an  Acquiring   Person.  As  soon  as
practicable  after  the  Company  has  notified  the  Rights  Agent  of the
occurrence of the  Distribution  Date,  the Rights Agent will mail separate
certificates evidencing the Rights to holders of record of the Shares as of
the close of business on the  Distribution  Date and such  separate  Rights
certificates  alone will evidence the Rights.  The  Distribution  Date will
occur on [ ,] 1998 (i.e., the tenth business day following the commencement
by SPX of the Offer)  unless  prior to such date the Board of  Directors of
the Company determines to choose a later date for the Distribution Date.

     If the Distribution Date occurs and separate certificates representing
the Rights are distributed by the Company or the Rights Agent to holders of
Shares prior to the time that a holder's  Shares are  tendered  pursuant to
the Offer, certificates representing a number of Rights equal to the number
of  Shares  tendered  must be  delivered  to the  Exchange  Agent,  or,  if
available,  a  Book-Entry  Confirmation  (as  defined in  "--Procedure  for
Tendering"  below)  must be  received by the  Exchange  Agent with  respect
thereto, in order for such Shares to be validly tendered. If a Distribution
Date  occurs  and  separate  certificates  representing  the Rights are not
distributed  prior to the time Shares are  tendered  pursuant to the Offer,
Rights may be tendered prior to the shareholder  receiving the certificates
for Rights by use of the  guaranteed  delivery  procedure  described  under
"--Procedure for Tendering" below.

TIMING OF THE OFFER

     The Offer is currently  scheduled to expire at 12:00 midnight New York
City time on [ ], 1998;  however,  it is SPX's current  intention to extend
the Offer from time to time as necessary  until all conditions to the Offer
have  been  satisfied  or  waived.  See  "--  Extension,   Termination  and
Amendment."  SPX has received a highly  confident  letter from CIBC and its
affiliate,  CIBC  Oppenheimer,  in which they  stated  that they are highly
confident  of their  ability to raise the  Financing.  SPX  believes  it is
highly  unlikely that it will not have obtained the Financing prior to five
business days before the Expiration Date;  however, in this unlikely event,
SPX currently intends to extend the Offer to ensure that five business days
remain for  shareholders to tender their Shares in the Offer  subsequent to
obtaining financing.

     In  connection  with the Offer,  SPX is  soliciting  Demands  from the
shareholders  of the Company that a Special  Meeting be called and held for
the purpose of, among other things, removing the current Board of Directors
of the Company and electing SPX's Nominees in their place. The Company does
not have a staggered Board. If SPX is successful in procuring  Demands from
the  requisite  35% holders of voting  power so that a Special  Meeting for
those purposes is called and held,  SPX intends to solicit  proxies for use
at the Special  Meeting to effect such removal and  election.  SPX does not
intend to call a special  meeting of its own  stockholders  to approve  the
issuance  of shares of SPX Common  Stock in  connection  with the Offer and
thereby satisfy the SPX Stockholder Approval Condition,  until the required
number of Demands have been received to call the Special Meeting.

EXTENSION, TERMINATION AND AMENDMENT

     SPX expressly  reserves the right (but will not be obligated),  in its
sole  discretion,  at any time or from  time to  time,  and  regardless  of
whether any of the events set forth in "--  Conditions  of the Offer" shall
have  occurred or shall have been  determined by SPX to have  occurred,  to
extend  the  period of time  during  which  the Offer is to remain  open by
giving oral or written  notice of such  extension  to the  Exchange  Agent,
which extension will be announced no later than 9:00 a.m., Eastern Time, on
the next business day after the previously scheduled Expiration Date. There
can be no assurance  that SPX will  exercise its right to extend the Offer.
However,  it is SPX's  current  intention  to extend  the  Offer  until all
conditions  to the Offer have been  satisfied  or  waived.  During any such
extension,  all Shares  previously  tendered and not withdrawn  will remain
subject to the Offer,  subject to the right of a tendering  shareholder  to
withdraw his or her Shares. See "-- Withdrawal Rights."

     Subject to the applicable rules and regulations of the Commission, SPX
also reserves the right, in its sole  discretion,  at any time or from time
to time, (i) to delay acceptance for exchange of, or, regardless of whether
such Shares were theretofore accepted for exchange,  exchange of any Shares
pursuant  to the  Offer,  or to  terminate  the  Offer and not  accept  for
exchange or exchange any Shares not theretofore  accepted for exchange,  or
exchanged,  upon the  failure of any of the  conditions  of the Offer to be
satisfied,  and (ii) to waive any condition (other than the SPX Stockholder
Approval  Condition and the condition  relating to the effectiveness of the
Registration  Statement)  or otherwise  amend the Offer in any respect,  by
giving oral or written  notice of such delay,  termination  or amendment to
the Exchange Agent and by making a public  announcement  thereof.  Any such
extension, termination,  amendment or delay will be followed as promptly as
practicable by public announcement  thereof,  such announcement in the case
of an extension to be issued no later than 9:00 a.m.,  Eastern time, on the
next business day after the previously  scheduled  Expiration Date. Subject
to applicable law (including Rules 14d-4(c) and 14d-6(d) under the Exchange
Act, which require that any material change in the  information  published,
sent or given to  shareholders  in  connection  with the Offer be  promptly
disseminated  to  shareholders  in a manner  reasonably  designed to inform
shareholders  of such change) and without  limiting the manner in which SPX
may choose to make any public announcement, SPX shall have no obligation to
publish,  advertise or otherwise  communicate any such public  announcement
other than by making a release to the Dow Jones News Service.

     SPX  confirms  that if it makes a material  change in the terms of the
Offer or the  information  concerning the Offer, or if it waives a material
condition  of the Offer,  SPX will extend the Offer to the extent  required
under  the  Exchange  Act.  If,  prior to the  Expiration  Date,  SPX shall
increase  or  decrease  the  percentage  of  Shares  being  sought  or  the
consideration offered to holders of Shares, such increase or decrease shall
be  applicable  to all  holders  whose  Shares are  accepted  for  exchange
pursuant to the Offer,  and, if at the time notice of any such  increase or
decrease is first published,  sent or given to holders of Shares, the Offer
is scheduled to expire at any time earlier than the tenth business day from
and  including  the date that such  notice is first so  published,  sent or
given, the Offer will be extended until the expiration of such ten business
day period.  For purposes of the Offer,  "business day" means any day other
than a  Saturday,  Sunday or a federal  holiday  and  consists  of the time
period from 12:01 a.m.  through 12:00 midnight,  Eastern time.  

EXCHANGE OF SHARES; DELIVERY OF SPX COMMON STOCK AND CASH CONSIDERATION

     Upon the terms and subject to the conditions of the Offer  (including,
if the Offer is extended or amended,  the terms and  conditions of any such
extension or amendment),  SPX will accept for exchange,  and will exchange,
Shares  validly  tendered  and  not  properly   withdrawn  as  promptly  as
practicable  following  the  Expiration  Date.  In  addition,   subject  to
applicable  rules of the  Commission,  SPX expressly  reserves the right to
delay  acceptance for exchange or the exchange of Shares in order to comply
with any  applicable  law. In all cases,  exchange of Shares  tendered  and
accepted for exchange  pursuant to the Offer will be made only after timely
receipt  by the  Exchange  Agent  of  certificates  for such  Shares  (or a
confirmation  of a  book-entry  transfer  of such  Shares  in the  Exchange
Agent's  account  at The  Depository  Trust  Company  or  The  Philadelphia
Depository  Trust  Company  (each  a  "Book-Entry  Transfer  Facility"  and
collectively the "Book-Entry Transfer  Facilities")),  a properly completed
and duly executed  Letter of  Transmittal  (or  facsimile  thereof) and any
other required documents.

     For  purposes of the Offer,  SPX will be deemed to have  accepted  for
exchange  Shares  validly  tendered and not  withdrawn  as, if and when SPX
gives oral or written notice to the Exchange Agent of its acceptance of the
tenders of such Shares pursuant to the Offer. Delivery of the Consideration
in  exchange  for  Shares  pursuant  to the  Offer,  and  cash  in  lieu of
fractional  shares of SPX Common Stock,  will be made by the Exchange Agent
as soon as  practicable  after receipt of such notice.  The Exchange  Agent
will act as agent for tendering  shareholders  for the purpose of receiving
the  Consideration  and cash to be paid in lieu of fractional shares of SPX
Common  Stock  from  SPX and  transmitting  the  Consideration  and cash to
tendering  shareholders.  Under no circumstances will interest with respect
to  fractional  shares be paid by SPX by reason of any delay in making such
exchange.

     If any tendered  Shares are not accepted for exchange  pursuant to the
terms and conditions of the Offer for any reason,  or if  certificates  are
submitted for more Shares than are tendered or are exchanged,  certificates
for  such  unexchanged  Shares  will be  returned  without  expense  to the
tendering  shareholder  or, in the case of Shares  tendered  by  book-entry
transfer of such Shares into the Exchange  Agent's  account at a Book-Entry
Transfer  Facility  pursuant  to the  procedures  set forth below under "--
Procedure  for  Tendering,"  such  Shares  will be  credited  to an account
maintained within such Book-Entry  Transfer Facility as soon as practicable
following expiration or termination of the Offer.

CASH IN LIEU OF FRACTIONAL SHARES OF SPX COMMON STOCK

     No  certificates  representing  fractional  shares of SPX Common Stock
will be issued  pursuant  to the Offer.  In lieu  thereof,  each  tendering
shareholder  who would  otherwise be entitled to a fractional  share of SPX
Common  Stock  will  receive  cash in an  amount  equal  to  such  fraction
(expressed  as a decimal and rounded to the nearest  0.01 of a share) times
the closing price for shares of SPX Common Stock on the NYSE Composite Tape
on the date such shareholder's Shares are accepted for exchange by SPX.

WITHDRAWAL RIGHTS

     Tenders of Shares made pursuant to the Offer are  irrevocable,  except
that Shares tendered pursuant to the Offer may be withdrawn pursuant to the
procedures set forth below at any time prior to the Expiration  Date,  and,
unless  theretofore  accepted  for  exchange  and  exchanged by SPX for the
Consideration  pursuant  to the Offer,  may also be  withdrawn  at any time
after [ ], 1998.

     For a withdrawal to be  effective,  a written,  telegraphic,  telex or
facsimile  transmission notice of withdrawal must be timely received by the
Exchange  Agent at one of its addresses set forth on the back cover of this
Prospectus,  and must  specify the name of the person  having  tendered the
Shares to be  withdrawn,  the number of Shares to be withdrawn and the name
of the registered holder, if different from that of the person who tendered
such Shares.

     The  signature(s)  on the notice of withdrawal must be guaranteed by a
financial institution  (including most banks, savings and loan associations
and brokerage  houses) which is a participant  in the  Securities  Transfer
Agents Medallion Program,  the New York Stock Exchange Medallion  Signature
Program or the Stock Exchange Medallion Program (an "Eligible Institution")
unless  such  Shares have been  tendered  for the  account of any  Eligible
Institution.  If Shares have been tendered  pursuant to the  procedures for
book-entry tender as set forth below under "--Procedure for Tendering," any
notice of withdrawal must specify the name and number of the account at the
Book-Entry  Transfer  Facility to be credited with the withdrawn Shares and
must otherwise comply with such Book-Entry Transfer Facility's  procedures.
If certificates have been delivered or otherwise identified to the Exchange
Agent,  the name of the  registered  holder and the  serial  numbers of the
particular  certificates  evidencing  the  Shares  withdrawn  must  also be
furnished to the Exchange Agent as aforesaid prior to the physical  release
of such certificates.

     All questions as to the form and validity  (including time of receipt)
of any  notice  of  withdrawal  will  be  determined  by SPX,  in its  sole
discretion,  which determination  shall be final and binding.  Neither SPX,
the Exchange Agent, the Information Agent, the Dealer Manager nor any other
person  will be  under  any duty to give  notification  of any  defects  or
irregularities  in any notice of withdrawal or will incur any liability for
failure to give any such  notification.  Any Shares properly withdrawn will
be deemed not to have been  validly  tendered  for  purposes  of the Offer.
However,  withdrawn  Shares  may  be  retendered  by  following  one of the
procedures  described  under "-- Procedure for Tendering" at any time prior
to the Expiration Date.

     A  withdrawal  of Shares shall also  constitute  a  withdrawal  of the
associated Rights. Rights may not be withdrawn unless the associated Shares
are also withdrawn.

PROCEDURE FOR TENDERING

     For a shareholder  validly to tender Shares pursuant to the Offer, (i)
a properly  completed and duly exercised Letter of Transmittal (or manually
executed   facsimile   thereof),   together  with  any  required  signature
guarantees,  or an Agent's  Message (as defined below) in connection with a
book-entry transfer, and any other required documents,  must be transmitted
to and received by the Exchange  Agent at one of its addresses set forth on
the back cover of this  Prospectus  and either  certificates  for  tendered
Shares  must be  received  by the  Exchange  Agent at such  address or such
Shares must be tendered pursuant to the procedures for book-entry  transfer
set forth  below (and a  confirmation  of receipt of such  tender  received
(such confirmation,  a "Book-Entry  Confirmation")),  in each case prior to
the Expiration Date, or (ii) the tendering shareholder must comply with the
guaranteed delivery procedure set forth below.

     The  term  "Agent's  Message"  means  a  message,   transmitted  by  a
Book-Entry  Transfer  Facility to, and received by, the Exchange Agent, and
forming  a part  of a  Book-Entry  Confirmation,  which  states  that  such
Book-Entry  Transfer Facility has received an express  acknowledgment  from
the participant in such Book-Entry  Transfer Facility  tendering the Shares
which  are  the  subject  of  such  Book-Entry   Confirmation,   that  such
participant  has received and agrees to be bound by the terms of the Letter
of  Transmittal  and that  SPX may  enforce  such  agreement  against  such
participant.

     Shareholders  will be  required  to tender  one  Right for each  Share
tendered  in order to effect a valid  tender of  Shares,  unless the Rights
Plan Condition has been satisfied or waived.  Unless the Distribution  Date
occurs,  a tender  of Shares  will  constitute  a tender of the  associated
Rights.  If  the  Distribution   Date  occurs  and  separate   certificates
representing  the Rights are distributed by the Company or the Rights Agent
to holders  of Shares  prior to the time a  holder's  Shares  are  tendered
pursuant to the Offer,  certificates  representing a number of Rights equal
to the number of Shares  tendered must be delivered to the Exchange  Agent,
or, if available, a Book-Entry  Confirmation received by the Exchange Agent
with respect thereto,  in order for such Shares to be validly tendered.  If
the  Distribution  Date occurs and separate  certificates  representing the
Rights are not distributed  prior to the time Shares are tendered  pursuant
to the Offer,  Rights may be tendered prior to a shareholder  receiving the
certificates  for  Rights  by  use  of the  guaranteed  delivery  procedure
described  below.  If  Rights  certificates  are  distributed  but  are not
available to a shareholder  prior to the time Shares are tendered  pursuant
to the Offer, a tender of Shares  constitutes an agreement by the tendering
shareholder  to deliver to the Exchange  Agent  pursuant to the  guaranteed
delivery  procedure  described below, prior to the expiration of the period
to be specified in the Notice of Guaranteed Delivery and the related Letter
of  Transmittal  for  delivery  of  Rights  certificates  or  a  Book-Entry
Confirmation for Rights (the "Rights Delivery Period"), Rights certificates
representing a number of Rights equal to the number of Shares tendered.  If
Rights certificates are distributed,  SPX will distribute a separate letter
of transmittal for such Rights  certificates.  If Rights  certificates  are
tendered  separately  from  Shares,  then a  properly  completed  letter of
transmittal  for  Rights   certificates  (or  manually  executed  facsimile
thereof)  must be submitted  with respect to such Rights.  SPX reserves the
right to require that it receive such Rights  certificates (or a Book-Entry
Confirmation  with  respect to such Rights)  prior to accepting  Shares for
exchange.

     Nevertheless,  SPX will be  entitled  to accept  for  exchange  Shares
tendered  by a  shareholder  prior to receipt  of the  Rights  certificates
required to be tendered with such Shares or a Book-Entry  Confirmation  for
such Rights and either (i) subject to complying with  applicable  rules and
regulations  of the  Commission,  withhold  payment for such Shares pending
receipt of the Rights  certificates or a Book-Entry  Confirmation  for such
Rights or (ii) exchange Shares accepted for exchange pending receipt of the
Rights  certificates  or a  Book-Entry  Confirmation  for  such  Rights  in
reliance  upon  the  guaranteed  delivery  procedure  described  below.  In
addition,  after expiration of the Rights Delivery Period,  SPX may instead
elect to reject as invalid a tender of Shares with  respect to which Rights
certificates  or a  Book-Entry  Confirmation  for an equal number of Rights
have not been received by the Exchange Agent.  Any  determination by SPX to
make payment for Shares in reliance upon such guaranteed delivery procedure
or, after expiration of the Rights Delivery  Period,  to reject a tender as
invalid, shall be made, subject to applicable law, in the sole and absolute
discretion of SPX.

     The Exchange Agent will establish  accounts with respect to the Shares
at the Book-Entry  Transfer Facilities for purposes of the Offer within two
business  days after the date of the  mailing of this  Prospectus,  and any
financial  institution  that  is a  participant  in any  of the  Book-Entry
Transfer  Facilities' systems may make book-entry delivery of the Shares by
causing such Book-Entry  Transfer Facility to transfer such Shares into the
Exchange  Agent's  account  in  accordance  with such  Book-Entry  Transfer
Facility's  procedure  for such  transfer.  However,  although  delivery of
Shares  may be  effected  through  book-entry  at the  Book-Entry  Transfer
Facilities,  the Letter of  Transmittal  (or facsimile  thereof),  with any
required signature  guarantees,  or an Agent's Message in connection with a
book-entry transfer,  and any other required documents,  must, in any case,
be  transmitted to and received by the Exchange Agent at one or more of its
addresses  set  forth on the back  cover  of this  Prospectus  prior to the
Expiration Date, or the guaranteed  delivery procedure described below must
be complied  with.  No assurance  can be given,  however,  that  book-entry
delivery  of  Rights  will be  available.  If  book-entry  delivery  is not
available,  a tendering  shareholder  will be required to tender  Rights by
means of delivery  of Rights  certificates  or  pursuant to the  guaranteed
delivery procedure set forth below.

     Signatures  on all Letters of  Transmittal  must be  guaranteed  by an
Eligible Institution, except in cases in which Shares are tendered (i) by a
registered  holder  of  Shares  (including  any  participant  in one of the
Book-Entry  Transfer  Facilities whose name appears on a security  position
listing  as the  owner of  Shares)  who has not  completed  either  the box
entitled  "Special  Payment  Instructions"  or the  box  entitled  "Special
Delivery Instructions" on the Letter of Transmittal or (ii) for the account
of an Eligible Institution.

     If the  certificates  for Shares or Rights (if any) are  registered in
the name of a person other than the signer of the Letter of Transmittal, or
if certificates for unexchanged  Shares or Rights (if any) are to be issued
to a person other than the registered  holder(s),  the certificates must be
endorsed or accompanied by appropriate  stock powers, in either case signed
exactly as the name or names of the  registered  owner or owners  appear on
the certificates, with the signature(s) on the certificates or stock powers
guaranteed as aforesaid.

     THE METHOD OF DELIVERY OF SHARE  CERTIFICATES  AND ALL OTHER  REQUIRED
DOCUMENTS,  INCLUDING DELIVERY THROUGH ANY BOOK-ENTRY TRANSFER FACILITY, IS
AT THE OPTION AND RISK OF THE TENDERING SHAREHOLDER,  AND THE DELIVERY WILL
BE DEEMED  MADE ONLY WHEN  ACTUALLY  RECEIVED  BY THE  EXCHANGE  AGENT.  IF
DELIVERY  IS BY  MAIL,  REGISTERED  MAIL  WITH  RETURN  RECEIPT  REQUESTED,
PROPERLY INSURED, IS RECOMMENDED.  IN ALL CASES,  SUFFICIENT TIME SHOULD BE
ALLOWED TO ENSURE TIMELY DELIVERY.

     To prevent backup U.S. federal income tax withholding  equal to 31% of
the gross proceeds  (i.e.,  SPX Common Stock and cash) payable  pursuant to
the Offer,  each shareholder who does not otherwise  establish an exemption
from  backup   withholding   must  notify  the   Exchange   Agent  of  such
shareholder's correct taxpayer  identification number (or certify that such
taxpayer is awaiting a taxpayer  identification number) and provide certain
other information by completing,  under penalties of perjury,  a Substitute
Form W-9  included  in the  Letter  of  Transmittal.  Noncorporate  foreign
shareholders should generally complete and sign a form W-8,  Certificate of
Foreign Status, a copy of which may be obtained from the Exchange Agent, in
order to avoid backup withholding.

     If a shareholder  desires to tender  Shares  pursuant to the Offer and
such  shareholder's  certificates  are not  immediately  available  or such
shareholder   cannot  deliver  the  certificates  and  all  other  required
documents  to the  Exchange  Agent  prior  to the  Expiration  Date or such
shareholder  cannot  complete the  procedure for  book-entry  transfer on a
timely basis,  such Shares may nevertheless be tendered,  provided that all
of the following conditions are satisfied:

     (a)  such tenders are made by or through an Eligible Institution;

     (b)  a  properly  completed  and duly  executed  Notice of  Guaranteed
          Delivery,  substantially  in the form made  available  by SPX, is
          received by the Exchange  Agent as provided  below on or prior to
          the Expiration Date; and

     (c)  the  certificates for all tendered Shares (or a confirmation of a
          book-entry  transfer of such securities into the Exchange Agent's
          account at a Book-Entry Transfer Facility as described above), in
          proper form for transfer,  together with a properly completed and
          duly executed Letter of Transmittal (or facsimile thereof),  with
          any  required  signature   guarantees  (or,  in  the  case  of  a
          book-entry transfer,  an Agent's Message) and all other documents
          required  by  the  Letter  of  Transmittal  are  received  by the
          Exchange  Agent  within three NYSE trading days after the date of
          execution of such Notice of Guaranteed Delivery.

     The  Notice  of  Guaranteed  Delivery  may be  delivered  by  hand  or
transmitted  by  telegram,  telex,  facsimile  transmission  or mail to the
Exchange  Agent and must include a guarantee by an Eligible  Institution in
the form set forth in such Notice.

     In all cases,  exchanges of Shares  tendered and accepted for exchange
pursuant  to the  Offer  will be made  only  after  timely  receipt  by the
Exchange  Agent of  certificates  for Shares (or timely  confirmation  of a
book-entry transfer of such securities into the Exchange Agent's account at
a Book-Entry Transfer Facility as described above),  properly completed and
duly executed  Letter(s) of Transmittal (or  facsimile(s)  thereof),  or an
Agent's  Message in connection  with a book-entry  transfer,  and any other
required  documents.  Accordingly,  tendering  shareholders  may be paid at
different   times   depending   upon  when   certificates   for  Shares  or
confirmations of book-entry  transfers of such Shares are actually received
by the Exchange Agent.

     By executing a Letter of Transmittal as set forth above, the tendering
shareholder  irrevocably  appoints  designees of SPX as such  shareholder's
attorneys-in-fact and proxies, each with full power of substitution, to the
full  extent  of such  shareholder's  rights  with  respect  to the  Shares
tendered by such  shareholder  and  accepted  for  exchange by SPX and with
respect to any and all other Shares and other securities issued or issuable
in  respect  of the  Shares  on or after [ ],  1998.  Such  appointment  is
effective,  and voting rights will be effected, when and only to the extent
that SPX deposits the Consideration for Shares tendered by such shareholder
with the Exchange Agent. All such proxies shall be considered  coupled with
an interest in the tendered  Shares and  therefore  shall not be revocable.
Upon the effectiveness of such appointment, all prior proxies given by such
shareholder will be revoked,  and no subsequent  proxies may be given (and,
if given, will not be deemed effective). SPX's designees will, with respect
to the Shares for which the appointment is effective,  be empowered,  among
other things,  to exercise all voting and other rights of such  shareholder
as they, in their sole  discretion,  deem proper at any annual,  special or
adjourned  meeting of Company  shareholders,  by written consent in lieu of
any such meeting or  otherwise.  SPX reserves the right to require that, in
order for  Shares to be deemed  validly  tendered,  immediately  upon SPX's
exchange of such Shares,  SPX must be able to exercise  full voting  rights
with respect to such Shares.

     All questions as to the validity, form, eligibility (including time of
receipt)  and  acceptance  for  exchange  of any  tender of Shares  will be
determined by SPX, in its sole  discretion,  which  determination  shall be
final and binding.  SPX  reserves the absolute  right to reject any and all
tenders  of  Shares  determined  by it  not  to be in  proper  form  or the
acceptance  of or exchange for which may, in the opinion of SPX's  counsel,
be  unlawful.  SPX also  reserves  the  absolute  right to waive any of the
conditions of the Offer (other than the SPX Stockholder  Approval Condition
and  the  condition  relating  to the  effectiveness  of  the  Registration
Statement),  or any defect or irregularity in the tender of any Shares.  No
tender of Shares will be deemed to have been validly made until all defects
and  irregularities in such tender have been cured or waived.  Neither SPX,
the Exchange Agent, the Information Agent, the Dealer Manager nor any other
person  will be  under  any duty to give  notification  of any  defects  or
irregularities  in the tender of any Shares or will incur any liability for
failure to give any such  notification.  SPX's  interpretation of the terms
and  conditions  of the Offer  (including  the  Letter of  Transmittal  and
instructions thereto) will be final and binding.

     The tender of Shares pursuant to any of the procedures described above
will  constitute  a  binding   agreement   between  the  tendering  Company
shareholder  and SPX upon the terms and  subject to the  conditions  of the
Offer.

CERTAIN FEDERAL INCOME TAX CONSEQUENCES

     The  following  summary  describes  the material  anticipated  federal
income tax  consequences of the Offer and the Merger.  This discussion does
not  address  all  aspects  of U.S.  federal  income  taxation  that may be
relevant to a  particular  investor in light of the  investor's  particular
circumstances,  and may not apply to Company  shareholders  in special  tax
situations (such as insurance companies,  regulated  investment  companies,
financial  institutions,  dealers in securities,  tax exempt organizations,
persons who hold Shares as part of a "straddle",  "hedging" or "conversion"
transaction or persons whose functional currency (as defined in section 985
of the Internal  Revenue Code of 1986,  as amended (the "Code")) is not the
United States dollar) or to shareholders who acquired their Shares pursuant
to the  exercise of employee  stock  options or  warrants,  or otherwise as
compensation.  The summary  also does not discuss the tax  consequences  to
holders of Company  warrants or stock options,  nor to persons who exercise
dissenters'  rights in the Merger.  The  discussion  below  applies only to
shareholders who hold their Shares as capital assets, within the meaning of
Section 1221 of the Code. This discussion is based upon laws,  regulations,
rulings,  administrative  pronouncements and decisions, all as in effect as
of the date  hereof and all of which are subject to change  (possibly  with
retroactive  effect),  and no ruling has been or will be requested from the
Internal  Revenue  Service  on the tax  consequences  of the  Offer and the
Merger.

     The discussion  below applies only to a United States Person.  As used
herein,  the term United  States  Person means (a) a citizen or resident of
the United States, (b) a corporation,  partnership, or other entity created
or  organized in or under the laws of the United  States,  any State or any
political  subdivision thereof (c) an estate the income of which is subject
to U.S. federal income taxation regardless of its source or (d) a trust, if
a court within the United  States is able to exercise  primary  supervision
over the  administration of the trust and one or more United States Persons
have the authority to control all substantial decisions of the trust.

     Tax Treatment of the Offer and the Merger.  The exchange of Shares for
cash and SPX  Common  Stock  pursuant  to the Offer or the Merger (or both)
will be a taxable transaction for U.S. federal income tax purposes, and may
also be  taxable  under  applicable  state,  local  and  foreign  tax laws.
Although,  as described  below, the exchange of Shares in the Offer and the
Merger is likely to be  governed  in part by  Section  304 of the Code,  in
general  (subject  to the  discussion  below with  respect to  shareholders
owning, directly or constructively, stock in both the Company and SPX other
than  the SPX  Common  Stock  received  in the  Offer  or the  Merger  (see
"--Shareholders Owning Both Shares and SPX Common Stock," below)), for U.S.
federal income tax purposes,  each shareholder will recognize  capital gain
or loss equal to the difference between (x) the amount of cash and the fair
market  value  of the  shares  of SPX  Common  Stock  received  and (y) the
shareholder's   adjusted  tax  basis  in  the  Shares  exchanged  therefor.
Calculation  of gain or loss  must be made  separately  for  each  block of
Shares exchanged by a shareholder. Any gain recognized will (in the case of
individual  shareholders)  be subject to reduced  rates of  taxation if the
shareholder's  holding period for the Shares exceeds 12 months,  subject to
further  reduction in the case of Shares held for more than 18 months.  The
shareholder will have a tax basis in the SPX Common Stock received equal to
the fair market value thereof, and the shareholder's holding period for the
SPX Common Stock will begin on the day following the date of the exchange.

     Shareholders  Owning  Both  Shares  and SPX  Common  Stock.  If, as is
believed  likely,  the  Offer  and  the  Merger  are  treated  as a  single
integrated transaction for U.S. federal income tax purposes, the portion of
a  shareholder's  Shares  exchanged for cash  attributable to SPX (the "SPX
Cash")  should be treated as a deemed  distribution  in  redemption  of SPX
Common Stock it owns or is considered to own pursuant to Section 304 of the
Code.  SPX Cash is equal to the cash exchanged in the Offer and the Merger,
other than any such cash  attributable to cash held by the Company prior to
the Merger plus the increase in the  liabilities of the Company  arising by
virtue of the Merger.  As a result, a shareholder who immediately  prior to
exchanging  Shares in the Offer or Merger  owns SPX  Common  Stock  (either
directly  or  pursuant to certain  constructive  ownership  rules which are
described below and not including SPX Common Stock received in the Offer or
the Merger) may have  different tax  treatment  than that  discussed  above
under  the  heading  "Tax  Treatment  of the Offer  and the  Merger."  Such
shareholders  will  recognize  capital gain or loss on the portion of their
Shares  exchanged  for SPX  Common  Stock  and  cash  that is not SPX  Cash
("Company Cash"), in an amount equal to the difference  between (x) the sum
of the  Company  Cash and the fair  market  value of the SPX  Common  Stock
received and (y) the shareholder's tax basis in the Shares deemed exchanged
therefor.  Any such gain will be taxed as described above under the heading
"Tax  Treatment of the Offer and the Merger."  However,  such  shareholders
will  recognize  capital  gain or loss with respect to the portion of their
Shares  exchanged  for  SPX  Cash  only  if,  after  giving  effect  to the
constructive  ownership  rules of Section 318 of the Code (as  modified for
purposes of Section  304),  the receipt of such cash is (a)  "substantially
disproportionate"   with  respect  to  that  shareholder  or  (b)  is  "not
essentially  equivalent  to a dividend"  with  respect to that  shareholder
within the meaning of Section 302 of the Code  (collectively,  the "Section
302 Tests"). Both of these tests, and Section 318, are described below.

     If either of the  Section  302 Tests is  satisfied  with  respect to a
shareholder,  that shareholder will recognize capital gain or loss equal to
the  difference  between  the amount of SPX Cash  received  pursuant to the
Offer or  Merger  (or  both) and that  shareholder's  basis for the  Shares
exchanged  therefor.  Any such gain will be taxed as described  above under
the heading "Tax Treatment of the Offer and the Merger."

     If neither of the Section  302 Tests is  satisfied  with  respect to a
shareholder, that shareholder will be treated as having received a dividend
(taxable  as  ordinary  income) in an amount  equal to the SPX Cash (or, if
less, equal to that  shareholder's  allocable  portion of the Company's and
SPX's current and accumulated  earnings and profits ("E&P")).  Any SPX Cash
received in excess of such allocable portion of E&P will be treated, first,
as a non-taxable return of capital to the extent of the shareholder's basis
in the SPX Common Stock treated as redeemed, and thereafter as capital gain
to the extent it exceeds such basis. Proper adjustment will be made to such
shareholder's  basis for his SPX Shares,  if any, to reflect any unutilized
basis for the stock  treated as redeemed.  Corporate  holders of Shares who
are deemed to receive a dividend  pursuant  to the Offer or the Merger will
be subject to special  rules  described  under  "Treatment  of Dividends to
Corporate Shareholders" below.

     A deemed  redemption  of SPX Common Stock from a  shareholder  will be
"substantially  disproportionate"  with respect to that  shareholder if (a)
the  percentage  of the  outstanding  Shares  constructively  owned  by the
shareholder  immediately  following  the Merger is less than (b) 80% of the
percentage of the outstanding Shares actually and  constructively  owned by
that shareholder  immediately before the purchase of Shares pursuant to the
Offer and the Merger.

     A    shareholder    who   fails   to   satisfy   the    "substantially
disproportionate"  test  may  nevertheless  satisfy  the  "not  essentially
equivalent to a dividend" test if such shareholder's  disposition of Shares
pursuant to the Offer or the Merger results in a "meaningful  reduction" in
his proportionate interest in the Company. Whether the receipt of cash by a
shareholder will be "not essentially  equivalent to a dividend"  depends on
the particular shareholder's facts and circumstances. The IRS has indicated
in  published  rulings  that even a small  reduction  in the  proportionate
interest of a small minority shareholder in a publicly held corporation who
exercises  no  control  over  corporate   affairs  may  constitute  such  a
"meaningful reduction".

     In determining whether either of the Section 302 Tests is satisfied, a
shareholder  must take into account not only stock of the Company  which he
actually owns, but also stock of the Company which he  constructively  owns
pursuant to Section 318 of the Code as modified for purpose of Section 304.
Under  Section 318 as  modified,  (i) a  stockholder  of SPX (no matter how
small its  ownership  interest  in SPX) will be treated  as  constructively
owning a proportionate  part of the stock of the Company owned by SPX after
consummation of the Offer and Merger,  and (ii) certain modified rules will
apply in determining  the extent to which a corporation  will be treated as
owning  stock  actually or  constructively  owned by its  stockholders.  In
addition,  a stockholder may constructively own stock of the Company and of
SPX (a) actually owned, and in some cases constructively  owned, by certain
related  individuals  and entities,  and (b) which the  stockholder has the
right to  acquire  by  exercise  of an  option  or a  conversion  privilege
(including, perhaps, the Rights).

     Treatment of Dividends to Corporate  Shareholders.  To the extent that
SPX Cash  received  in  exchange  for Shares is treated as a dividend  to a
corporate  shareholder,  such holder will be (i)  eligible  for a dividends
received deduction (subject to applicable  limitations) and (ii) subject to
the "extraordinary dividend" provisions of the Code. Under recently enacted
legislation,  any SPX Cash which is treated  as a dividend  to a  corporate
shareholder will constitute an extraordinary dividend,  except as otherwise
provided  in  Treasury  regulations  which  have  yet  to  be  promulgated.
Consequently, the nontaxed portion of the dividend would reduce a corporate
holder's  adjusted tax basis in the Shares  exchanged for SPX Cash, but not
below zero, and would thereafter be taxable as a capital gain from the sale
or exchange of the Shares exchanged for SPX Cash.

     Tax Treatment if Offer and Merger are Not Integrated.  In the unlikely
event that the Offer and the Merger were not treated as a single integrated
transaction  for U.S.  federal income tax purposes,  both the Offer and the
Merger would be taxable transactions.  The cash received in the Offer would
be  subject to  Section  304,  and the tax  consequences  to an  individual
shareholder  would depend on the  application  of the Section 302 Tests (as
described above) to such shareholder based on such shareholder's particular
facts and circumstances. The cash received in the Merger might also in part
be subject to Section 304. However,  any shareholder who tenders all of its
Shares  in the  Offer and does not,  actually  or by  attribution,  own any
shares of SPX Common Stock  immediately  prior to the  effectuation  of the
Offer, should recognize capital gain or loss.

RIGHTS

     Because there is no specific binding authority dealing with securities
such as the Company Rights,  it is unclear what the U.S. federal income tax
consequences  are of the Company Rights  becoming  separately  transferable
apart from the Company Shares, the redemption of the Company Rights, or the
acquisition  by SPX of the  Company  Rights.  Company  shareholders  should
consult their own tax advisors as to the tax  consequences  of transactions
with respect to the Company Rights.

     THE  FOREGOING  DISCUSSION  RELATES TO THE MATERIAL  ANTICIPATED  U.S.
FEDERAL INCOME TAX  CONSEQUENCES OF THE OFFER AND THE MERGER.  THE ANALYSIS
CONTAINED HEREIN DOES NOT ADDRESS STATE, LOCAL, OR FOREIGN TAX CONSEQUENCES
OF THE OFFER AND THE MERGER,  OR ANY OTHER  UNITED  STATES TAX  CONSEQUENCE
OTHER THAN INCOME TAX CONSEQUENCES (E.G., ESTATE OR GIFT TAX CONSEQUENCES),
AND DOES NOT CONSTITUTE TAX ADVICE TO ANY PARTICULAR  COMPANY  SHAREHOLDER.
COMPANY  SHAREHOLDERS  SHOULD CONSULT THEIR TAX ADVISORS AS TO THE SPECIFIC
TAX CONSEQUENCES OF THE OFFER AND THE MERGER.

     See  "--Procedure   for  Tendering"  for  information   regarding  the
application of backup U.S. federal income tax withholding.

EFFECT OF OFFER ON MARKET FOR SHARES; REGISTRATION UNDER THE EXCHANGE ACT

     The exchange of Shares pursuant to the Offer will reduce the number of
holders  of Shares  and the number of Shares  that  might  otherwise  trade
publicly and could  adversely  affect the liquidity and market value of the
remaining Shares held by the public.

     The Shares are listed and principally  traded on the NYSE and are also
listed on the PE and the International Stock Exchange in London.  Depending
upon the  number  of  Shares  acquired  pursuant  to the  Offer,  following
consummation of the Offer the Shares may no longer meet the requirements of
such securities  exchanges for continued  listing.  For example,  published
guidelines of the NYSE indicate that the NYSE would consider  delisting the
outstanding  Shares if, among other things, (i) the number of publicly held
Shares  (exclusive of holdings of officers,  directors and members of their
immediate families and other  concentrated  holdings of 10% or more) should
fall below 600,000, (ii) the number of record holders of 100 or more Shares
should fall below  1,200 or (iii) the  aggregate  market  value of publicly
held Shares should fall below $5 million.

     According to the Company's  1998 First  Quarter Form 10-Q,  there were
outstanding,  as of December 31, 1997,  63,169,129 Shares, and according to
the Company's 1997 Form 10-K, as of August 31, 1997,  there were options to
acquire 2,044,284 Shares, and, as of November 5, 1997, 3,295 record holders
of Shares.

     If the NYSE were to delist the Shares,  the market  therefor  could be
adversely affected. It is possible that the Shares would be traded on other
securities  exchanges  or in the  over-the-counter  market,  and that price
quotations would be reported by such exchanges,  through NASDAQ or by other
sources.   The  extent  of  the  public  market  for  the  Shares  and  the
availability of such quotations would,  however,  depend upon the number of
holders and/or the aggregate  market value of the Shares  remaining at such
time,  the  interest in  maintaining  a market in the Shares on the part of
securities  firms,  the possible  termination of registration of the Shares
under the Exchange Act, as described below, and other factors.

     The Shares are presently "margin  securities" under the regulations of
the Federal  Reserve Board,  which has the effect,  among other things,  of
allowing  brokers  to  extend  credit  on the  collateral  of such  Shares.
Depending  on factors  similar  to those  described  above with  respect to
listing  and market  quotations,  following  consummation  of the Offer the
Shares may no longer constitute "margin securities" for the purposes of the
Federal Reserve Board's margin regulations, in which event the Shares would
be ineligible as  collateral  for margin loans made by brokers.  The Shares
are currently  registered under the Exchange Act. Such  registration may be
terminated  by  the  Company  upon  application  to the  Commission  if the
outstanding Shares are not listed on a national  securities exchange and if
there are fewer  than 300  holders  of record  of  Shares.  Termination  of
registration  of the  Shares  under  the  Exchange  Act  would  reduce  the
information required to be furnished by the Company to its shareholders and
to the  Commission  and would make certain  provisions of the Exchange Act,
such as the short-swing profit recovery provisions of Section 16(b) and the
requirement   of   furnishing  a  proxy   statement  in   connection   with
shareholders'   meetings   pursuant  to  Section   14(a)  and  the  related
requirement  of  furnishing  an annual  report to  shareholders,  no longer
applicable  with  respect  to  the  Shares.  Furthermore,  the  ability  of
"affiliates" of the Company and persons holding "restricted  securities" of
the  Company to dispose of such  securities  pursuant to Rule 144 under the
Securities Act may be impaired or eliminated. If registration of the Shares
under the  Exchange  Act were  terminated,  the  Shares  would no longer be
eligible  for Nasdaq  reporting or for  continued  inclusion on the Federal
Reserve Board's list of "margin securities."

     The Rights are registered under the Exchange Act and are listed on the
NYSE,  but  currently  are attached to the  outstanding  Shares and are not
separately transferable.  The Rights may become transferable apart from the
Shares,  unless  previously  redeemed  or unless  the Rights  Agreement  is
amended so as to make the Offer not applicable to the Rights. If the Rights
are not redeemed  and the Rights  Agreement is not so amended so as to make
the Offer  inapplicable  to the  Rights  and SPX  waives  the  Rights  Plan
Condition,  then the foregoing discussion with respect to the effect of the
Offer on the Shares would be similarly  applicable to the Rights  (although
the continued listing criteria are different).

PURPOSE OF THE OFFER; THE MERGER

     The  purpose of the Offer is to enable SPX to obtain  control  of, and
ultimately the entire equity interest in, the Company.

     The Offer, as the first step in the acquisition by SPX, is intended to
facilitate  the  acquisition of all of the Shares.  SPX presently  intends,
following  consummation  of the  Offer,  to  propose  and  seek to have the
Company effect the Merger.  In the Merger,  each  outstanding  share (other
than  Shares  owned  by SPX or any of its  affiliates,  Shares  held in the
treasury  of the  Company or by any  subsidiary  of the  Company and Shares
owned by the Company's  shareholders who perfect  dissenters'  rights under
Connecticut  law)  would  be  converted  into  the  right  to  receive  the
Consideration.  Assuming the Minimum  Tender  Condition and the other Offer
Conditions are satisfied (or waived, as applicable) and SPX consummates the
Offer,  SPX would be able to consummate  the Merger  without any additional
vote  of  the  holders  of  SPX  Common  Stock  or the  vote  of any  other
shareholders of the Company.

     It is SPX's current  intention to consummate  the Offer as soon as the
conditions to the Offer are satisfied and to consummate  the Merger as soon
as possible after successful completion of the Offer.

CONDITIONS OF THE OFFER

     Minimum Tender  Condition.  The Offer is conditioned upon, among other
things,  there  being  validly  tendered  and not  withdrawn  prior  to the
Expiration Date a number of Shares which, together with Shares owned by SPX
and its affiliates, will constitute at least 66-2/3% of the total number of
outstanding Shares on a fully diluted basis (as though all options or other
securities  convertible  into or  exercisable or  exchangeable  for Shares,
other than the Rights, had been so converted, exercised or exchanged) as of
the date the Shares are accepted for exchange by SPX pursuant to the Offer.
According to the Company's 1998 First Quarter Form 10-Q, as of December 31,
1997,  there  were  63,169,129  Shares  outstanding  and  according  to the
Company's  1997 Form  10-K,  as of August 31,  1997,  options  covering  an
aggregate of 2,044,284  Shares had been  granted.  As of February 17, 1998,
SPX owned  1,150,150  Shares,  or  approximately  1.82% of the  outstanding
Shares.  Based on the  foregoing,  SPX  believes  that the  Minimum  Tender
Condition would be satisfied if at least an aggregate of 42,325,459  Shares
were validly tendered pursuant to the Offer and not withdrawn. SPX reserves
the  right  (but  shall  not  be  obligated),  subject  to  the  rules  and
regulations  of the  Commission,  to  waive  or amend  the  Minimum  Tender
Condition and to exchange fewer than such number of Shares as would satisfy
the Minimum  Tender  Condition  pursuant to the Offer;  provided,  however,
that,  in the event of such waiver or  amendment,  the Offer will expire no
sooner than ten business days from the date of such waiver or amendment.

     SPX Stockholder  Approval  Condition.  The Offer is conditioned  upon,
among  other  things,  the  satisfaction  of the SPX  Stockholder  Approval
Condition. Pursuant to the rules of the NYSE (on which the SPX Common Stock
is listed),  because the number of shares of SPX Common  Stock to be issued
in the Offer and the Merger will exceed 20% of the shares outstanding prior
to such  issuance,  the  issuance  must be  approved  by the  holders  of a
majority  of the  shares of SPX  Common  Stock,  voted at a meeting of such
holders  at which the total  number of votes  cast  represents  over 50% in
interest of all shares of SPX Common Stock  outstanding  on the  applicable
record date. Under the Delaware General Corporation Law and the NYSE rules,
approval by a majority  of the votes  entitled to be cast by the holders of
SPX Common  Stock that are present or  represented  by proxy is required to
effect the amendment.  SPX does not intend to seek such approvals until the
required number of Demands have been received to call the Special Meeting.

     Rights Plan  Condition.  The Offer is  conditioned  upon,  among other
things,  the  satisfaction  of the Rights Plan  Condition.  The Rights Plan
Condition  may be satisfied  in several  ways,  including by the  Company's
Board of Directors  (a)  amending  the Rights  Agreement so that the Rights
would not be  triggered  by the Offer and the Merger or (b)  redeeming  the
Rights.  As noted  above,  if the SPX  Nominees are elected to the Board of
Directors  of the  Company,  it is expected  that they will take all action
required to cause the Rights Plan Condition to be satisfied.

     For additional information  concerning the Rights Agreement,  see "The
Offer--The  Rights" and  "Comparison of Rights of Holders of Shares and SPX
Common Stock."

     Business  Combination  Statutes  Condition.  The Offer is  conditioned
upon, among other things, SPX being satisfied,  in its sole judgment,  that
the  provisions  of  Sections  841  and  844  of the  Connecticut  Business
Combination  Statutes are inapplicable to SPX, the Offer and the Merger and
that (i) the only approval  necessary by the shareholders of the Company to
approve the Merger is the  affirmative  vote of 66-2/3% of the  outstanding
Shares (and, in such vote,  that the Shares held by SPX or any affiliate of
SPX will  have  full  voting  rights)  and (ii)  the  Connecticut  Business
Combination  Statutes  will  not  prohibit  for  any  period  of  time  the
consummation of the Merger or any other "business  combination" (as defined
in such statutes) involving SPX or any affiliate or associate of SPX.

     Section  844 of the  Business  Combination  Statutes  provides  that a
corporation may not engage in any business  combination with an "Interested
Shareholder"  (defined as the beneficial owner of 10% or more of the voting
power  of a  company)  for five  years  following  the  date on  which  the
Interested Shareholder became such unless the acquisition which resulted in
the Interested  Shareholder  becoming such (the "10% Acquisition"),  or the
business  combination,  is  approved  by the  board of  directors  and by a
majority of the  non-employee  directors,  of which there shall be at least
two, before the date of the 10% Acquisition.

     Sections 841 and 842 of the Business Combination Statutes provide that
any  business  combination  with an  Interested  Shareholder  that  was not
approved by the board of  directors  prior to the 10%  Acquisition  must be
approved  by  the  board  of  directors,  80% of the  voting  power  of the
outstanding shares of the voting stock of the corporation and two-thirds of
the voting  power not  controlled  by the  Interested  Shareholder  or meet
certain conditions regarding minimum price and type of consideration.

     As noted  above,  if the SPX  Nominees  are  elected  to the  Board of
Directors  of the  Company,  it is expected  that they will take all action
required  to  cause  the  Business  Combination  Statutes  Condition  to be
satisfied.

     For  additional   information   concerning  the  Business  Combination
Statutes,  see  "Comparison  of Rights of  Holders of Shares and SPX Common
Stock."

     Financing  Condition.  The  Offer is  conditioned  upon,  among  other
things,  SPX obtaining,  prior to the expiration of the Offer, on terms and
conditions satisfactory to SPX in its sole discretion, sufficient Financing
to  enable  consummation  of the  Offer  and  the  Merger  (the  "Financing
Condition").  SPX has received a highly  confident letter from CIBC and its
affiliate,  CIBC  Oppenheimer,  dated  February 13, 1998,  in which the two
entities  have stated that they are highly  confident  of their  ability to
raise the  Financing,  subject to  certain  conditions  set forth  therein,
including  without  limitation  (i)  acceptance  by the  Company  of  SPX's
proposal and execution of the definitive  documentation;  (ii) satisfactory
completion of financial,  business and legal due diligence by CIBC and CIBC
Oppenheimer regarding the Company; (iii) agreement among SPX, CIBC and CIBC
Oppenheimer  upon a mutually  acceptable set of terms and  conditions  upon
which a  lending  commitment  could  be  issued;  (iv) the  absence  of any
material   adverse  change  in  the  business,   condition   (financial  or
otherwise),  results of operations, assets, liabilities or prospects of SPX
or the Company;  (v) no material  disruption  or adverse  change in CIBC or
CIBC  Oppenheimer's  opinion in the financial,  banking or capital markets;
and  (vi)  the  receipt  of  all  necessary  governmental,  regulatory  and
third-party approvals and consents in connection with the transaction.

     Regulatory  Approval  Condition.  The Offer is conditioned upon, among
other things,  any  regulatory  approvals  required to consummate the Offer
(the "Requisite  Regulatory  Approvals") having been obtained and remaining
in full force and effect,  all statutory waiting periods in respect thereof
having   expired  and  no  such  approval   containing  any  conditions  or
restrictions  which  the  Board  of  Directors  of SPX  determines  will or
reasonably  could be  expected  to  materially  impair  the  strategic  and
financial  benefits  expected  to result  from the Offer  (the  "Regulatory
Approval  Condition").   Based  on  the  Company's  public  filings,  these
approvals  may  include  the  approval  of  certain  foreign   governmental
agencies.  SPX will use its reasonable best efforts to obtain the Requisite
Regulatory  Approvals.  The Offer  cannot  proceed  in the  absence  of any
Requisite  Regulatory  Approvals.  Although no assurances can be given, SPX
anticipates  that it will receive any Requisite  Regulatory  Approvals on a
timely basis.

     Under  the HSR Act  and the  rules  and  regulations  that  have  been
promulgated  thereunder,   certain  acquisition  transactions  may  not  be
consummated unless certain  information has been furnished to the Antitrust
Division  and the FTC and certain  waiting  period  requirements  have been
satisfied.  On January 6, 1998,  SPX filed with the Antitrust  Division and
the FTC its HSR Filing  seeking  to  acquire up to 100% of the  outstanding
Shares.  At 11:59 p.m. on February 5, 1998 the waiting  period expired with
respect to SPX's HSR Filing.  Accordingly,  satisfaction  of  the premerger
notification  and  waiting  period  requirements of  the  HSR  Act is not a
condition of the Offer.

     Certain  stockholders  of the Company may be required to make separate
filings with the  Antitrust  Division and the FTC under the HSR Act and the
rules and regulations that have been promulgated  thereunder in conjunction
with the receipt of shares of SPX Common Stock. Such shareholders will then
be required to observe applicable waiting periods under the HSR Act and the
rules and regulations promulgated thereunder before receiving shares of SPX
Common Stock.  If any  shareholder is obligated to make such a filing,  SPX
will  deposit the shares of SPX Common Stock to be  exchanged,  pursuant to
the rules and regulations promulgated under the HSR Act, pending expiration
or early termination of the waiting period.

     Except as set forth  above,  based  upon an  examination  of  publicly
available  information  filed by the Company with the  Commission and other
publicly  available  information  with respect to the  Company,  SPX is not
aware of (a) any license or regulatory  permit which appears to be material
to the business of the Company and its  subsidiaries  taken as a whole, and
which is likely to be  adversely  affected by SPX's  acquisition  of Shares
pursuant  to the Offer or (b) any  approval  or other  action by any state,
federal or foreign  governmental,  administrative  or regulatory  agency or
authority  (each, a "Governmental  Entity") that would be required prior to
the acquisition of Shares pursuant to the Offer.  SPX presently  intends to
take such  actions  with  respect  to any  approvals  as will  enable it to
consummate the Offer. In this regard,  SPX expressly  reserves the right to
challenge  the validity and  applicability  of any state,  foreign or other
statutes or regulations  purporting to require approval of the consummation
of the Offer.

     There can be no assurance that any license,  permit, approval or other
action,  if  needed,  would  be  obtained,  or would  be  obtained  without
substantial  conditions,  or, if so obtained, when it would be obtained, or
that adverse  consequences  might not result to the  Company,  SPX or their
respective  businesses  in  the  event  of  adverse  regulatory  action  or
inaction.

     Certain  Other  Conditions  of the  Offer.  Notwithstanding  any other
provision of the Offer and subject to any applicable  rules and regulations
of the Commission, including Rule 14e-1(c) under the Exchange Act (relating
to SPX's  obligation to exchange or return  tendered  Shares promptly after
the  termination or withdrawal of the Offer),  SPX shall not be required to
accept for exchange or exchange any Shares, may postpone the acceptance for
exchange or exchange for tendered  Shares and may, in its sole  discretion,
terminate or amend the Offer as to any Shares not then exchanged if, at the
Expiration Date, the Minimum Tender Condition, the SPX Stockholder Approval
Condition,  the Rights Plan Condition,  the Business  Combination  Statutes
Condition,  the Financing Condition,  and the Regulatory Approval Condition
shall not have been satisfied or, if legally permissible,  waived, or if on
or after  the  date of this  Prospectus  and on or prior to the  Expiration
Date:

(x)  either of the following events shall not have occurred:

     (a)  The shares of SPX  Common  Stock  (and the  accompanying  Rights)
          which shall be issued to the  shareholders  of the Company in the
          Offer and the Merger  shall have been  authorized  for listing on
          the NYSE, subject to official notice of issuance; or

     (b)  The Registration  Statement shall have become effective under the
          Securities Act, and no stop order suspending the effectiveness of
          the  Registration   Statement  shall  have  been  issued  and  no
          proceedings  for  that  purpose  shall  have  been  initiated  or
          threatened by the Commission; or

(y)  any of the following conditions shall exist:

     (a)  there  shall have been  threatened  or be  pending  any action or
          proceeding   before  any  court  or  Governmental   Entity,   (i)
          challenging  or seeking to  restrain or  prohibit,  or seeking to
          impose  voting,  procedural,  price  or  other  requirements,  in
          addition  to those  required by federal  securities  laws and the
          Connecticut  Business  Act (each as in effect on the date of this
          Offer),  in  connection  with,  the  making  of  the  Offer,  the
          acceptance for exchange of, or exchange for, any Shares by SPX or
          any affiliate of SPX or the  consummation by SPX or any affiliate
          of SPX of the  Merger  or  other  business  combination  with the
          Company,  or seeking  to obtain  material  damages in  connection
          therewith;  (ii)  seeking to  prohibit  or limit  materially  the
          ownership  or  operation  by the  Company,  SPX  or any of  their
          subsidiaries of any material portion of the business or assets of
          the Company,  SPX or any of their subsidiaries,  or to compel the
          Company,  SPX or any of their  subsidiaries to dispose of or hold
          separate  any  material  portion of the business or assets of the
          Company,  SPX or any of  their  subsidiaries;  (iii)  seeking  to
          impose  limitations on the ability of SPX or any affiliate of SPX
          to exercise  effectively  full rights of  ownership of any Shares
          (including the Rights associated with Shares), including, without
          limitation, the right to vote any Shares acquired by SPX pursuant
          to the Offer or otherwise on all matters previously  presented to
          the Company's  shareholders;  (iv) seeking to require divestiture
          by SPX or any of SPX's affiliates of any Shares;  (v) seeking any
          material diminution in the benefits expected to be derived by SPX
          or  any  affiliates  of  SPX  as a  result  of  the  transactions
          contemplated  by the Offer or the  Merger  or any  other  similar
          business combination with the Company; (vi) otherwise directly or
          indirectly  relating  to the  Offer  or which  otherwise,  in the
          reasonable judgment of SPX, might materially adversely affect the
          Company or any of its subsidiaries or SPX or any affiliate of SPX
          or the value of the  Shares;  or (vii)  which  otherwise,  in the
          reasonable  judgment  of  SPX,  is  reasonably  likely  to have a
          material adverse effect on the business,  operations  (including,
          without limitation,  result of operations),  condition (financial
          or  otherwise),  assets,  liabilities or prospects of the Company
          and its  subsidiaries  taken  as a  whole  (a  "Material  Adverse
          Effect") or on SPX;

     (b)  there shall have been any action  taken,  or any  statute,  rule,
          regulation,  legislation,   interpretation,  judgment,  order  or
          injunction enacted,  entered,  enforced,  or deemed applicable to
          (i) SPX,  the Company or any  affiliate  of SPX or the Company or
          (ii) the Offer or the Merger or other business combination by SPX
          or any  affiliate  of SPX with the  Company,  by any  legislative
          body,  court,  or Governmental  Entity,  which, in the reasonable
          judgment  of SPX,  is  reasonably  likely to result,  directly or
          indirectly, in any of the consequences referred to in clauses (i)
          through (vii) of paragraph (y)(a) above;

     (c)  there  shall  have  occurred  any  change,  condition,  event  or
          development which,  individually or in the aggregate,  has had or
          is  reasonably  likely to have a Material  Adverse  Effect or SPX
          shall have become aware of any fact of which SPX had no actual or
          constructive  knowledge  as of the  date  of  this  Offer  which,
          individually or in the aggregate, has had or is reasonably likely
          to have a Material Adverse Effect;

     (d)  there  shall have  occurred  (i) any  general  suspension  of, or
          limitation  on prices for,  trading in securities on any national
          securities  exchange  or in the  over-the-counter  market  in the
          United States,  (ii) any  significant  adverse change in interest
          rates,  the financial  markets or major stock exchange indices in
          the  United  States or abroad or in the  market  price of Shares,
          including without limitation any decline, measured from the close
          of business on  [             ],  1998,  in the Standard & Poor's
          500 Index by an amount in excess of 10%,  (iii) any change in the
          general  political,  market,  economic,  regulatory  or financial
          condition  in the  United  States or abroad  that  could,  in the
          reasonable  business  judgment  of SPX,  have a Material  Adverse
          Effect,  (iv)  any  material  adverse  change  in  United  States
          currency  exchange  rates or a suspension  of, or limitation  on,
          currency  exchange  markets,  (v)  a  declaration  of  a  banking
          moratorium  or any  suspension of payments in respect of banks in
          the United States, (vi) any limitation (whether or not mandatory)
          by any government or Governmental Entity on, or other event that,
          in the reasonable  judgment of SPX, might affect the extension of
          credit  by  banks  or  other   lending   institutions,   (vii)  a
          commencement  of a war or armed  hostilities or other national or
          international  calamity  directly  or  indirectly  involving  the
          United  States  or  (viii)  in the  case of any of the  foregoing
          existing on [                ],  1998, a material acceleration or
          worsening thereof;

     (e)  The  Company or any of its  affiliates  shall  have,  directly or
          indirectly,   (i)  split,   combined  or  otherwise  changed,  or
          authorized or proposed a split,  combination  or other change of,
          the Shares or its capitalization (other than by redemption of the
          Rights in  accordance  with  their  terms as such terms have been
          publicly  disclosed  prior  to the  date  of  this  Offer),  (ii)
          acquired or  otherwise  caused a  reduction  in the number of, or
          authorized or proposed the  acquisition or other reduction in the
          number of,  outstanding Shares or other securities (other than as
          aforesaid),  (iii) issued or sold,  or authorized or proposed the
          issuance,  distribution or sale of, additional Shares (other than
          the issuance of Shares under options granted prior to the date of
          this Offer,  in accordance with the terms of such options as such
          terms  have  been  publicly  disclosed  prior to the date of this
          Offer),  shares of any other class of capital stock, other voting
          securities  or  any  securities   convertible  into,  or  rights,
          warrants or options, conditional or otherwise, to acquire, any of
          the  foregoing,  (iv) declared or paid, or proposed to declare or
          pay, any dividend or other distribution, whether payable in cash,
          securities or other property, on or with respect to any shares of
          capital  stock of the  Company  (other  than (A) a  regular  cash
          quarterly  dividend  not in excess of $0.225  per  Share,  having
          customary and usual record and payment dates and (B) in the event
          the Rights are redeemed,  the price of redemption  thereof),  (v)
          altered or proposed to alter any material term of any outstanding
          security  (including  the Rights)  other than to amend the Rights
          Agreement  to make the Rights  inapplicable  to the Offer and the
          Merger,  (vi) incurred any debt other than in the ordinary course
          of business or any debt containing  burdensome  covenants,  (vii)
          authorized,  recommended,  proposed or entered into an agreement,
          arrangement  or   understanding   with  respect  to  any  merger,
          consolidation,  liquidation,  dissolution,  business combination,
          acquisition  of  assets,   disposition  of  assets,   release  or
          relinquishment of any material  contractual or other right of the
          Company or any of its subsidiaries or any comparable event not in
          the ordinary course of business, (viii) authorized,  recommended,
          proposed  or  entered   into,   or  announced  its  intention  to
          authorize,  recommend,  propose  or enter  into,  any  agreement,
          arrangement or understanding with any person or group that in the
          reasonable  judgment  of SPX could  adversely  affect  either the
          value  of  the  Company  or  any of  its  subsidiaries  or  other
          affiliates  or the value of the Shares to SPX or any affiliate of
          SPX,  (ix)  entered  into or amended  any  employment,  change in
          control, severance,  executive compensation or similar agreement,
          arrangement  or  plan  with  or  for  the  benefit  of any of its
          employees,  consultants  or  directors,  or made grants or awards
          thereunder,  other than in the  ordinary  course of  business  or
          entered into or amended any agreements,  arrangements or plans so
          as to provide for increased or  accelerated  benefits to any such
          person, (x) except as may be required by law, taken any action to
          terminate  or amend any  employee  benefit  plan (as  defined  in
          Section 3(3) of the Employee  Retirement  Income  Security Act of
          1974, as amended) of the Company or any of its subsidiaries, (xi)
          amended or  authorized or proposed any amendment to the Company's
          Certificate of Incorporation or By-Laws,  or (xii) SPX shall have
          become  aware that the Company or any of its  subsidiaries  shall
          have taken any of the foregoing actions that was not disclosed in
          publicly available filings prior to the date of this Offer;

     (f)  SPX shall have  reached an agreement  or  understanding  with the
          Company  providing for  termination  of the Offer,  or SPX or any
          affiliate of SPX shall have  entered into a definitive  agreement
          or announced an agreement in principle with the Company providing
          for a merger or other  business  combination  with the Company or
          the purchase of stock or assets of the Company;

which,  in the reasonable  judgment of SPX in any such case, and regardless
of the circumstances (including any action or inaction by SPX or any of its
affiliates)  giving rise to any such  condition,  makes it  inadvisable  to
proceed with such acceptance for payment.

     The  foregoing  conditions  are for the sole benefit of SPX and may be
asserted by SPX  regardless  of the  circumstances  giving rise to any such
condition  or may be waived by SPX in whole or in part at any time and from
time to time.  The  determination  as to  whether  any  condition  has been
satisfied  shall be in the  sole  judgment  of SPX and  will be  final  and
binding on all  parties.  The failure by SPX at any time to exercise any of
the  foregoing  rights shall not be deemed a waiver of any such right;  the
waiver of any such right with respect to particular facts and circumstances
shall  not be  deemed  a  waiver  with  respect  to  any  other  facts  and
circumstances;  and each such right  shall be deemed an ongoing  right that
may be asserted at any time and from time to time. Notwithstanding the fact
that SPX reserves the right to assert the failure of a condition  following
acceptance for exchange but prior to exchange in order to delay exchange or
cancel its obligation to exchange properly tendered Shares, SPX will either
promptly exchange such Shares or promptly return such Shares.

SOURCE AND AMOUNT OF FUNDS

     SPX estimates  that the total amount of funds that will be required to
pay the cash component of the Consideration in the Offer and the Merger, to
refinance  outstanding debt of SPX and of the Company,  and to pay fees and
expenses  related to the Offer and the Merger  will be  approximately  $2.0
billion.  See "The  Offer-Fees  and  Expenses."  SPX  plans to  obtain  the
necessary  Financing  pursuant to credit  facilities to be arranged by CIBC
and CIBC  Oppenheimer.  SPX has received a letter from those two  entities,
dated  February 13, 1998,  in which CIBC and CIBC  Oppenheimer  have stated
that they are highly confident of their ability to raise the Financing. See
"--Conditions of the Offer-Financing Condition."

DEBT INSTRUMENTS OF THE COMPANY

     SPX has not had access to, and  therefore has not been able to review,
any of the documents governing any indebtedness of the Company. Some or all
of these documents may contain provisions for acceleration of the Company's
indebtedness  upon a change in control of the  Company.  In  arranging  for
receipt of the  "highly  confident"  letter with  respect to the  financing
necessary  to  effect  the  transaction,  SPX has  assumed  that all of the
indebtedness of the Company would need to be refinanced.

RELATIONSHIPS WITH THE COMPANY

     Except  as  set  forth   herein   under   the   captions   "Prospectus
Summary--Background  of the Offer" and  "Background of the Offer,"  neither
SPX nor, to the best of its  knowledge,  any of its  directors or executive
officers  nor any  associate  or  majority-owned  subsidiary  of any of the
foregoing,  beneficially  owns  or  has  a  right  to  acquire  any  equity
securities  of the Company.  Except as set forth below,  neither SPX nor to
the best of its  knowledge,  any of the  persons or  entities  referred  to
above,  nor any  director,  executive  officer or  subsidiary of any of the
foregoing,  has effected any transaction in such equity  securities  during
the last 60 days.

                                          Number of    Weighted Daily Average
   Shareholder    Transaction Date    Shares Acquired     Price per Share
   -----------    ----------------    ---------------     ---------------
       SPX            12/18/97                54,000            35.4877
       SPX            12/19/97               114,000            34.9047
       SPX            12/22/97               240,000            36.0210
       SPX            12/23/97                 8,000            35.7500
       SPX            01/05/98                20,000            36.8191
       SPX            01/06/98                33,800            37.1444
       SPX            02/06/98                76,200            37.1443
       SPX            02/09/98               160,700            37.8080
       SPX            02/10/98                 7,400            38.9730
       SPX            02/11/98               146,500            38.4826
       SPX            02/12/98                87,250            38.8041
       SPX            02/13/98               202,300            38.9359
                                             -------
      TOTAL                                1,150,150

     Except as described in this  Prospectus,  neither SPX nor, to the best
of its  knowledge,  any of its directors or executive  officers has (i) any
contract, arrangement,  understanding or relationship with any other person
with respect to any securities of the Company,  including,  but not limited
to, any contract, arrangement, understanding or relationship concerning the
transfer  or the voting of any such  securities,  joint  ventures,  loan or
option arrangements, puts or calls, guaranties of loans, guaranties against
loss or the giving or  withholding  of  proxies;  (ii) had any  contacts or
negotiations  with the  Company  or its  affiliates  concerning  a  merger,
consolidation  or  acquisition,  a tender  offer or  other  acquisition  of
securities,  an election  of  directors,  or a sale or other  transfer of a
material  amount  of  assets;  or (iii)  has had any  transaction  with the
Company or any of its  executive  officers,  directors or  affiliates  that
would require  disclosure under the rules and regulations of the Commission
applicable to the Offer.

     Pursuant to the Company's Change in Control  Severance  Policy,  if an
event  constituting a "Change in Control" (as defined below) of the Company
occurs and the Board of Directors of the Company  declares  that such event
qualifies or will qualify as a Change in Control,  employees of the Company
will have  contractual  rights  against  the  Company or its  successor  to
receive  certain  severance  benefits upon a "Qualifying  Termination"  (as
defined  below) of their  employment  following  such  Change  in  Control.
Benefits  under  the  Change  in  Control   Severance  Policy  include  the
following:  (i) a lump sum equal to one week of annual  base salary and one
week of annual executive bonus for each year of service,  but not less than
between   7.5  and  36  months  of  pay   (depending   upon  the  level  of
responsibility of the employee);  (ii) continued  insurance  coverage;  and
(iii) in lieu of outplacement services,  between 5% and 15% (depending upon
the level of  responsibility  of the  employee) of annual base salary.  The
Change in Control  Severance  Policy  contains a  "gross-up"  provision  to
reimburse  an employee  in the event that a payment  triggers an excise tax
pursuant to Section 4999 of the Internal Revenue Code (or similar tax). The
Company has also agreed to pay all reasonable legal fees and  disbursements
of an employee in  enforcing  his or her rights under the Change in Control
Severance Policy. The consummation of the transactions  contemplated by the
Offer,  the Merger and SPX's  Demand  Solicitation  will each  constitute a
Change in Control if the Company's Board of Directors declares it to be so.
A  "Qualifying  Termination"  of an  employee  is  defined as either of the
following during the two years following the Change in Control:  (i) layoff
or involuntary  termination by the Company or its successor  other than for
cause or by  reason  of death or  disability,  or (ii)  termination  by the
employee for "Good  Reason."  "Good  Reason" is defined as  including,  for
employees who are corporate officers or assistant corporate officers of the
Company on the date of the Change in Control,  termination  by the employee
for any reason during the thirty-day  period  commencing one year after the
date of the Change in Control.  The Company has  reported in the  Company's
1997 Annual Meeting Proxy Statement that approximately 350 of its employees
participate  in the  Change in  Control  Severance  Policy,  including  all
salaried employees on the corporate staff of the Company.

     A Change in Control of the Company would also affect  certain other of
the  publicly  available  employee  benefit and  compensation  plans of the
Company,  as follows:  Under the Company's 1992 Stock Option Plan,  options
granted under the plan (and certain  incentive  stock options granted prior
to the plan's  effective  date)  would be deemed to have  associated  stock
appreciation  rights.  Upon  exercise,  these rights would be paid in cash,
with the number of rights exercised  serving to reduce the number of shares
underlying  the  options.   Under  the  Company's  Performance  Unit  Plan,
outstanding  performance  units would  immediately vest at a value equal to
100%  of the  value  of the  performance  units  multiplied  by a  fraction
representing the elapsed portion of the performance period. The performance
units would be required to be paid in cash within ninety days following the
Change  in  Control.  Under the  Company's  Supplemental  Senior  Executive
Retirement Plan and  Supplemental  Executive  Retirement  Plan, the Company
would be required to fully fund trusts  established for the payment of plan
benefits, and, in addition, upon termination of a participant's  employment
within the two years  following  the Change in Control  (i) by the  Company
other  than for cause or by reason  of death or  disability  or (ii) by the
participant with "Good Reason," the participant  would become vested in his
or her plan  benefit.  ("Good  Reason" for purposes of these plans does not
include the right of a participant  to terminate his or her  employment for
any reason during the thirty-day  period commencing one year after the date
of the Change in Control.) Under the Company's 1996  Non-Employee  Director
Stock Option Plan,  all  outstanding  options  would  immediately  vest and
remain  exercisable  through their  expiration dates (but not more than ten
years from date of grant).  Under all these plans,  the consummation of the
transactions  contemplated  by the  Offer,  the  Merger  and  SPX's  Demand
Solicitation  will each  constitute  a Change in Control  if the  Company's
Board of Directors declares it to be so.

     In the Company's 1997 Annual Meeting Proxy Statement, the Company also
reports that, with respect to its defined benefit pension plan, a Change in
Control would result in (i) the  immediate  vesting of accrued but unvested
benefits  and (ii) the grant of  service  credit  on the same  basis as the
grant of benefits under the Change in Control  Severance  Policy (i.e., one
week of  service  credit  for each year of  service,  but not less than 7.5
months of  service  credit  and not more than 36 months of  service  credit
(depending on the level of responsibility of the employee)).

FEES AND EXPENSES

     SPX has retained D.F. King & Co., Inc. to act as Information  Agent in
connection  with the Offer.  The  Information  Agent may contact holders of
Shares by mail, telephone, telex, telegraph and personal interviews and may
request  brokers,  dealers and other  nominee  shareholders  to forward the
Offer materials to beneficial owners of Shares.  The Information Agent will
be paid  reasonable  and customary  compensation  for such  services,  plus
reimbursement  of  out-of-pocket  expenses,  and  SPX  will  indemnify  the
Information  Agent against  certain  liabilities and expenses in connection
with the Offer, including liabilities under federal securities laws.

     CIBC  Oppenheimer is acting as financial  advisor to SPX in connection
with the Proposed Business Combination, and as Dealer Manager of the Offer,
for which  services  SPX has paid a fee of  $500,000  and has agreed to pay
additional  fees,  up to a maximum  of $8.5  million in the  aggregate  (in
addition to any fees which may be paid to CIBC  Oppenheimer  in  connection
with arranging or  participating  in the financing of the  transaction),  a
substantial  portion of which is contingent  upon the  consummation  of the
Proposed  Business  Combination.  SPX has also  agreed  to  reimburse  CIBC
Oppenheimer for its reasonable out-of-pocket expenses, including reasonable
attorneys' fees up to a specified maximum, and has agreed to indemnify CIBC
Oppenheimer  and certain  related  persons  and  entities  against  certain
liabilities  and  expenses in  connection  with its  engagement,  including
certain  liabilities under the federal  securities laws. In connection with
CIBC Oppenheimer's engagement as financial advisor,  officers and employees
of CIBC  Oppenheimer may  communicate in person,  by telephone or otherwise
with a limited  number of  institutions,  brokers or other  persons who are
shareholders of the Company.  CIBC Oppenheimer will not receive any fee for
or in  connection  with such  solicitation  activities  by its officers and
employees  apart  from the fees it is  otherwise  entitled  to  receive  as
described  above.  CIBC  Oppenheimer or (its  predecessor)  has in the past
rendered financial advisory services to SPX for which it received customary
compensation,  and may in the future  render  services  to SPX for which it
will receive fees.

     SPX will pay the Exchange Agent reasonable and customary  compensation
for its  services in  connection  with the Offer,  plus  reimbursement  for
out-of-pocket  expenses,  and will  indemnify  the Exchange  Agent  against
certain  liabilities  and  expenses  in  connection  therewith,   including
liabilities under the federal securities laws.

     SPX will not pay any fees or  commissions  to any  broker or dealer or
other  person  for  soliciting  tenders  of Shares  pursuant  to the Offer.
Brokers,  dealers,  commercial banks and trust companies will be reimbursed
by SPX for  customary  mailing and  handling  expenses  incurred by them in
forwarding material to their customers.

ACCOUNTING TREATMENT

     The  Offer  and  the  Merger  will  be  accounted  for  as  a  reverse
acquisition as the  shareholders  of the Company will own a majority of the
shares of SPX upon  completion of the Merger.  Accordingly,  for accounting
purposes,  SPX is  treated  as the  acquired  company  and the  Company  is
considered  to be  the  acquiring  company.  The  purchase  price  will  be
allocated  to the  assets  and  liabilities  assumed  of SPX based on their
estimated  fair  market  values  at the  acquisition  date.  Under  reverse
acquisition accounting,  the purchase price is based on the market value of
the SPX Common  Stock at the date of  acquisition.  The cash portion of the
Offer will be accounted for as a dividend by SPX. SPX's financial  position
and  results  of   operations   will  not  be  included  in  the  Company's
consolidated accounts prior to the date the Merger is consummated.

STOCK EXCHANGE LISTING

     The SPX  Common  Stock is listed  on the NYSE and the PE.  Application
will be made to list the SPX  Common  Stock to be  issued  pursuant  to the
Offer  and  the  Merger  on  the  NYSE.  As  described   above  under  "The
Offer--Conditions  of  the  Offer--SPX   Stockholder  Approval  Condition,"
pursuant to the rules of the NYSE,  assuming  there is a quorum  present at
the   shareholders   meeting  at  which  the  matter  is  being  considered
(consisting of over 50% of the stock issued and outstanding and entitled to
be voted at the  shareholders  meeting),  the  issuance  of the  additional
shares must be  approved by a majority of the votes  entitled to be cast by
the holders of SPX Common Stock that are present or represented by proxy at
the stockholders meeting.

                                 THE MERGER

GENERAL

     With  its  letter  to the  Board  of  Directors  of the  Company,  SPX
delivered a proposed merger  agreement to the Company in  contemplation  of
arriving  at a  negotiated  transaction.  That  agreement  provides  for  a
single-step  "cash election" merger of the Company into a subsidiary of SPX
in which  each  outstanding  Share  would be  converted  into the  right to
receive   the   Consideration  (with  shareholders able to elect to receive
instead  all  cash, in the amount of $48.00 per Share, or all stock, in the
amount of 0.6395 share of SPX Common Stock per Share, subject to proration)
in a partially tax-free reorganization.

DISSENTERS' RIGHTS

     The  following  discussion  is not a  complete  statement  of the  law
pertaining to dissenters' rights under the Connecticut  Business Act and is
qualified  in its entirety by the full text of Part XIII  (Sections  33-855
through 33-872) of that Act.

     Holders  of Shares do not have  dissenters'  rights as a result of the
Offer.  However,  in  connection  with the  Merger,  holders of Shares,  by
complying with the provisions of Part XIII of the Connecticut Business Act,
have certain rights to dissent and to require the surviving  Company in the
Merger to purchase  their  Shares for fair value.  In general,  a holder of
Shares  will  be  entitled  to  exercise  "dissenters'  rights"  under  the
Connecticut  Business Act only if such holder of Shares (i) delivers to the
Company  prior to the time the vote is taken with  respect  to the  Merger,
written notice of his or her intent to demand payment for his or her Shares
if the  Merger is  effectuated  and (ii) does not vote his or her Shares in
favor of the Merger.  If the statutory  procedures  relating to dissenters'
rights  are  complied  with,   such  rights  could  result  in  a  judicial
determination  of the fair value of the Shares.  The "fair  value" would be
determined based on the value of the Shares  immediately before the Merger,
excluding any  appreciation  or depreciation in anticipation of the Merger.
The value so determined could be more or less than the Consideration.

                     BUSINESSES OF SPX AND THE COMPANY

SPX

     General.  SPX is a global  provider of Vehicle  Service  Solutions  to
franchised dealers of motor vehicle  manufacturers and independent  service
locations,  Service Support to vehicle manufacturers and Vehicle Components
to the worldwide motor vehicle industry.

     SPX is  comprised  of two  business  segments.  The Service  Solutions
segment  includes  operations  that design,  manufacture  and market a wide
range of  specialty  service  tools,  equipment  and services to the global
motor vehicle  industry.  Major  customers are franchised  dealers of motor
vehicle   manufacturers,   aftermarket   vehicle  service   facilities  and
independent  distributors.  Vehicle  Components  includes  operations  that
primarily  design,   manufacture  and  market   transmission  and  steering
components  for light and heavy duty vehicle  markets  principally in North
America  and  Europe.  Major  customers  of this  segment  include  vehicle
manufacturers, other component manufacturers and the aftermarket.

     SPX  was   organized   in  1911  under  the  laws  of   Michigan   and
reincorporated  in  Delaware  in 1968.  SPX was  known as the  Piston  Ring
Company until 1931,  when it changed its name to Sealed Power  Corporation.
In 1988,  it  changed  its name  again to SPX  Corporation.  Today SPX is a
multinational corporation with operations in 14 countries.  SPX's corporate
headquarters  is  located  at  700  Terrace  Point  Drive,   Muskegon,   MI
49443-3301, telephone number (616) 724-5000.

     Subsequent  Developments.  During  the  fourth  quarter  of 1997,  SPX
recorded a $110 million pre-tax,  $70.4 million after-tax,  special charge.
The  special  charge is the result of actions by SPX to combine its OE Tool
and  Equipment  and  Aftermarket  Tool and  Equipment  groups into a single
Service  Solutions  business and to reorganize its Service  Solutions field
sales and service organization, including the closing of several facilities
and sales offices with a  commensurate  reduction in work force in order to
reposition the Service  Solutions  business in response to changing  market
dynamics.  SPX estimates  that the savings from these actions will be $0.15
per share in 1998 and an additional $0.35 per share in 1999.

     On February 17, 1998,  in  conjunction  with its  announcement  of the
Proposed Business Combination, SPX reported a net loss of $60.0 million, or
$4.77 per share,  for the fourth  quarter  1997 after the impact of a $70.4
million,  or $5.60 per share,  special charge.  For the full year 1997, SPX
reported  a net  loss of $3.4  million,  or  $0.26  per  share,  before  an
extraordinary  item,  after the impact of $43.4  million in unusual  items.
Unusual  items for the full  year 1997  include  special  charges  of $74.6
million,  or $5.61 per share, and a $31.2 million, or $2.34 per share, gain
on the sale of a business.  Earnings  per share for the full year 1997 were
$3.01,  before  unusual  items.  This  was  a  71%  improvement  over  1996
comparable results. All per share data is presented on a diluted basis.

THE COMPANY

     The following information concerning the Company is excerpted from the
Echlin  1997  Form  10-K and  other  publicly  available  information.  See
"Company Information."

     The Company was  incorporated  in the state of Connecticut in 1959 and
is engaged in only one business segment as a worldwide supplier of products
to maintain or improve the efficiency and safety of motor vehicles.  During
the past fiscal  year,  the Company  continued to conduct its business in a
manner consistent with prior years.

     The Company's  principal products can be classified into the following
categories:  brake system parts,  engine system parts,  other vehicle parts
and  non-vehicular  products.  Brake system parts include  hydraulic  brake
master  cylinders,  brake shoes,  drums,  brake cables,  hardware and wheel
cylinders for drum brake systems,  disc pads,  rotors and calipers for disc
brake  systems,  hoses and electric  brake  controllers  and antilock brake
systems. In addition,  wheel oil seals,  compressors,  air dryers,  valves,
power boosters,  pressure converters,  airbrake actuating products,  spring
brakes, brake block, remanufactured brake shoes, hose assemblies, pneumatic
and electrical  connectors,  slack adjusters,  gladhands,  hubs and trailer
draw bars are manufactured  for the heavy-duty brake market.  Engine system
parts include  condensers,  contacts,  complete  distributors,  distributor
caps, ignition coils, rotors, control modules, sensors, actuators, electron
voltage  regulators,  wire and  cable  products,  carburetor  and  emission
control  parts,  fuel  pumps,  lines and  rails,  water  pumps,  oil pumps,
filters, gaskets, heating and air-conditioning coupled hose assemblies, oil
coolers,  electronic fuel injection  systems,  oxygen sensors,  EGR and PCV
valves.  Other vehicle parts include power steering  pumps,  power steering
coupled hose assemblies,  new and remanufactured clutches, slave cylinders,
bell housings,  transmission oil cooler, timing gears and chains, universal
joints,  drive shafts,  engine  mounts,  airhorns,  air  suspension  system
components,  heavy duty  windshield  wiper  systems,  shifters and linkage,
shock  absorbers,  ball pins, track rod ends, king pins,  tie-rods,  rubber
bushings and mounts, louvers, lug nuts, wheel and chrome accessories,  HVAC
controls, window lift systems, mirrors, lights, trailer hitches, electrical
connectors,  body paints and finishes and cleaners for the high performance
market. Non-vehicular products include marine and power equipment parts.

     The Company's products are sold primarily as replacement  products for
use by professional technicians and by car and truck owners. Sales are made
to automotive warehouse distributors,  heavy-duty distributors,  retailers,
other parts manufacturers and parts remanufacturers. The Company also sells
its products to original equipment manufacturers in both the automotive and
heavy-duty markets.

                      DESCRIPTION OF SPX CAPITAL STOCK

     The  authorized  capital of SPX  consists of  3,000,000  shares of SPX
Preferred  Stock,  without par value,  issuable in series,  of which, as of
February  6, 1998,  500,000  shares  have been  designated  as SPX Series A
Preferred Stock and none is issued or outstanding, and 50,000,000 shares of
SPX Common  Stock,  par value $10 per share,  of which,  as of  February 6,
1998, 12,560,500 shares were issued and outstanding. All of the outstanding
shares of capital stock of SPX are fully paid and nonassessable. Holders of
SPX's capital stock have no preemptive rights.

     The  holders  of SPX  Common  Stock  are  entitled  to have  dividends
declared  in  cash,  property,  or other  securities  of SPX out of any net
profits or net assets of SPX legally  available  therefor.  In the event of
the liquidation or dissolution of SPX's business, the holders of SPX Common
Stock will be entitled  to receive  ratably the balance of SPX's net assets
available for distribution after payment of any liquidation or distribution
preference  payable  with  respect  to any then  outstanding  shares of SPX
Preferred  Stock.  Each share of SPX Common  Stock is  entitled to one vote
with respect to matters  brought  before the  stockholders,  except for the
election  of any  Directors  who may be elected by vote of any  outstanding
shares of SPX Preferred Stock voting as a class.

     The rights and  privileges of SPX Common Stock are  subordinate to the
rights and preferences of any SPX Preferred  Stock.  The Board of Directors
is authorized to fix by resolution  the  designation  of each series of SPX
Preferred Stock, and, with respect to each series,  the stated value of the
shares, the dividend rate and the dates and other provisions respecting the
payment of  dividends,  the  provisions,  if any, for a sinking  fund,  the
preferences of the shares in the event of the liquidation or dissolution of
SPX, the  provisions,  if any,  respecting  the  redemption  of the shares,
subject to applicable law, the voting rights (except that such shares shall
not have more than one vote per share),  the terms,  if any, upon which the
shares would be convertible  into or  exchangeable  for any other shares of
SPX,  and any other  relative,  participating,  optional  or other  special
rights,  qualifications,  limitations  or  restrictions.  All shares of any
series of SPX Preferred Stock, as between themselves,  rank equally and are
identical;  and all series of SPX Preferred  Stock, as between  themselves,
rank equally and are identical  except as set forth in  resolutions  of the
Board of Directors authorizing the issuance of such series.

     SPX designated a series of SPX Preferred Stock, SPX Series A Preferred
Stock, which is issuable in certain circumstances,  and issued rights ("SPX
Rights")  to  purchase  the SPX's  Series A  Preferred  Stock to holders of
shares of SPX Common  Stock.  The SPX Rights  are  exercisable  only in the
event of certain  events  described  more  fully  below  under the  caption
"Comparison  of Rights of  Holders of SPX  Common  Stock and the  Company's
Common Stock--SPX's Rights Plan."

     SPX's  Certificate  of  Incorporation  requires  the  approval  by the
holders  of 80% of the  voting  power of SPX's  shares as a  condition  for
certain  Business  Combinations  of SPX with any holder of more than 10% of
such voting power unless certain minimum price and procedural  requirements
or certain other  conditions  are met. The term "Business  Combination"  is
defined to include certain  mergers,  dispositions of assets,  issuances of
securities and similar  transactions.  See "Comparison of Rights of Holders
of Shares  and SPX Common  Stock--Business  Combinations  with  Substantial
Stockholders."

                      COMPARISON OF RIGHTS OF HOLDERS
                       OF SHARES AND SPX COMMON STOCK

     Pursuant to the Offer,  shareholders  of the Company  whose Shares are
purchased  in the Offer will receive SPX Common Stock in exchange for their
Shares and will become stockholders of SPX. Differences between the laws of
Delaware, the state of incorporation of SPX, and those of Connecticut,  the
state of  incorporation  of the Company,  and between SPX's  Certificate of
Incorporation and By-Laws,  on the one hand, and the Company's  Certificate
of  Incorporation  and By-Laws,  on the other hand,  will result in several
changes in the rights of  shareholders of the Company who elect to exchange
their  shares  for  those of the SPX.  A  summary  of the more  significant
changes is set forth below.

     The following  summary does not purport to be a complete  statement of
the  rights of  stockholders  under  SPX's  Certificate  of  Incorporation,
By-Laws and other  governing  instruments  and applicable  law, as compared
with  the  rights  of  the  Company's   shareholders  under  the  Company's
Certificate of Incorporation,  By-Laws and other governing  instruments and
applicable  law,  or a  complete  description  of the  specific  provisions
referred to herein.  The summary is  qualified in its entirety by reference
to the governing  corporate  instruments  of SPX and the Company and to the
laws of Delaware and Connecticut,  respectively,  to which shareholders are
referred.  For  information as to how these  corporate  instruments  may be
obtained, see "Available Information."

     SPECIAL MEETINGS OF STOCKHOLDERS. Under Delaware law, special meetings
of the  stockholders  may be called by the board of directors or such other
persons  as may  be  authorized  by the  certificate  of  incorporation  or
by-laws.  Under SPX's  Certificate of  Incorporation  and By-Laws,  special
meetings  of the  stockholders  may be  called  only by the  Chairman,  the
President or the Board of Directors pursuant to a resolution  approved by a
majority of the entire Board of Directors.

     Under  Connecticut  law,  special  meetings of the shareholders may be
called by the board of directors or such other persons as may be authorized
by the certificate of  incorporation or by-laws.  Under  Connecticut law, a
corporation that has a class of voting stock registered pursuant to Section
12  of  the  Exchange  Act  is  required  to  call  a  special  meeting  of
shareholders  upon the  written  request of the holders of not less than 35
percent of the voting power of all shares entitled to vote on the matter at
the meeting.  If notice of the special  meeting is not given within 30 days
after the date the demand is delivered to the corporation's secretary or if
the special meeting is not held in accordance with the notice, the superior
court for the judicial district where the corporation's principal office is
located may summarily  order a meeting to be held.  The  Company's  By-Laws
provide  that the  Chairman of the Board,  the  President,  or the Board of
Directors may, and, upon the written  request of at least 35 percent of the
voting power of all shares  entitled to vote at the meeting,  the President
shall,  call a special meeting of shareholders  for such purposes as may be
designated in the notice thereof.

     NUMBER OF DIRECTORS.  Under  Delaware law, a board of directors  shall
consist of one or more directors, with the number fixed by or in the manner
provided in the by-laws,  unless the certificate of incorporation fixes the
number of  directors,  in which  case a change in the  number of  directors
shall be made only by amendment to the certificate of incorporation.  SPX's
Certificate of Incorporation provides that the number of Directors shall be
fixed  from  time to time by or  pursuant  to the  By-Laws.  SPX's  By-Laws
provide that except as otherwise  fixed pursuant to the provisions of SPX's
Certificate of  Incorporation  relating to the rights of the holders of any
preferred  stock,  the number of Directors shall be fixed from time to time
by the Board of Directors but shall not be less than three. At present, the
Board of Directors of SPX has nine members.

     Under  Connecticut  law, a board of directors  shall consist of one or
more individuals,  with the number specified in or fixed in accordance with
the certificate of incorporation or by-laws.  The Company's By-Laws provide
that the Board  shall  consist of not less than three nor more than  twelve
members,  the number to be as the Directors shall from time to time direct,
provided,  however,  that  if the  Directors  fail  to fix  the  number  of
Directors,  the number to be elected will be the same  aggregate  number as
elected at the preceding  annual meeting of shareholders at which Directors
were elected and at any intervening  meeting for the election of Directors.
Based on  currently  available  information,  the Board of Directors of the
Company presently has nine members.

     CLASSIFICATION  OF DIRECTORS.  Under  Delaware law, the directors of a
corporation  may,  by the  certificate  of  incorporation  or by an initial
bylaw, or by a bylaw adopted by a vote of the stockholders, be divided into
one, two or three classes. SPX's Certificate of Incorporation provides that
the  Directors,  other  than  those who may be  elected  by the  holders of
Preferred Stock, will be classified into three classes,  as nearly equal in
number as possible.

     Under  Connecticut law, the certificate of  incorporation  may provide
for  staggering  the terms of  Directors  by dividing  the total  number of
Directors into five groups,  with each group containing  approximately  the
same percentage of the total.  The Company's  Certificate of  Incorporation
does not provide for a staggered Board.

     REMOVAL OF DIRECTORS.  Under  Delaware law,  generally any director or
the entire board of directors may be removed, with or without cause, by the
holders of a majority of the shares then entitled to vote at an election of
directors.  However,  in the case of a corporation with a classified board,
stockholders may effect such removal only for cause, unless the certificate
of incorporation otherwise provides. SPX's Certificate of Incorporation and
By-Laws provide that, subject to certain rights of holders of SPX Preferred
Stock,  any Director may be removed from office only for cause, and only by
the affirmative  vote of the holders of 80% of the combined voting power of
the  outstanding  shares  of  stock  entitled  to vote in the  election  of
Directors, voting together as a single class.

     Under   Connecticut  law,  unless  the  certificate  of  incorporation
provides that directors may be removed only for cause, the shareholders may
remove one or more directors with or without cause only at a meeting called
for that purpose.  Under Connecticut law,  assuming a quorum is present,  a
director  can be  removed  if the  number of votes in favor of  removal  is
greater than the number of votes against removal. In addition, the superior
court for the judicial  district where a corporation's  principal office is
located  may, in certain  circumstances,  remove a director in a proceeding
commenced either by the corporation or by its shareholders holding at least
ten  percent  of the  outstanding  shares.  The  Company's  Certificate  of
Incorporation is silent on the issue of removal of Directors.

     FILLING  VACANCIES ON THE BOARD OF DIRECTORS.  Under Delaware law, the
procedure  for filling  vacancies  may be  determined by a provision in the
certificate of incorporation. If, at any time, a corporation should have no
directors,  Delaware  law  provides  certain  mechanisms  to call a special
meeting to elect  directors.  The SPX's  Certificate of  Incorporation  and
By-Laws provide that any vacancies on the Board,  including those resulting
from any  increase  in the  number  of  Directors,  shall be  filled by the
majority of the remaining Directors then in office, even though less than a
quorum.

     Under   Connecticut  law,  unless  the  certificate  of  incorporation
provides  otherwise,  vacancies  may be filled by the  shareholders  or the
board of directors,  even though less than a quorum.  The Company's By-Laws
provide that the  shareholders  may at any time elect Directors to fill any
vacancy not filled by the Directors,  and may elect additional Directors at
a meeting at which an amendment of the By-Laws is approved  authorizing  an
increase in the number of Directors.

     PREEMPTIVE  RIGHTS.  Under  Delaware  law,  preemptive  rights are not
available to stockholders unless specifically authorized by the certificate
of incorporation.  SPX's Certificate of Incorporation provides that holders
of its shares shall not have any preemptive rights.

     Under Connecticut law,  the holders of common stock  of a  corporation
which  was incorporated under the laws  of Connecticut prior  to January 1,
1997  have  preemptive  rights  unless  the  certificate  of  incorporation
expressly  provides  otherwise.  The Company's Certificate of Incorporation
provides that holders of its shares shall not have any preemptive rights.

     CORPORATE ACTION WITHOUT A SHAREHOLDERS'  MEETING. Under Delaware law,
unless  prohibited by the certificate of  incorporation,  corporate actions
may be authorized without a meeting by written consent of holders of voting
shares  sufficient  to approve the action at a meeting where all holders of
voting shares were present and voted.  However,  under SPX's Certificate of
Incorporation,  corporate  actions  may not be  effected  by any consent in
writing by stockholders.
 
     Under   Connecticut  law,   actions  which  would  otherwise   require
shareholder  approval at a meeting of  shareholders  may be taken without a
shareholder  meeting (1) by written consent of all persons entitled to vote
on the action, or (2) if the certificate of incorporation so provides,  and
the action to be taken is not an  election  of  directors,  by the  written
consent of persons  holding  shares  sufficient  under the  certificate  of
incorporation to approve the action (but in no case less than a majority of
all shares entitled to vote).  The Company's  Certificate of  Incorporation
does not  provide  for action by written  consent.  The  Company's  By-Laws
provide that any action which may be taken at a meeting of shareholders may
be taken without a meeting by consent in writing,  setting forth the action
so taken or to be taken, signed by all the persons who would be entitled to
vote upon such action at a meeting.

     DIVIDENDS.  Under Delaware law, a corporation  may,  unless  otherwise
restricted by its certificate of  incorporation,  declare and pay dividends
out of  surplus,  or, if no  surplus  exists,  out of net  profits  for the
current or preceding  fiscal year,  provided that the amount of the capital
following the  declaration and payment of the dividend is not less than the
aggregate amount of capital represented by the issued and outstanding stock
of all classes having a preference  upon the  distribution of the assets of
the corporation.

     Under Connecticut law, a corporation may make distributions subject to
restriction by the certificate of incorporation. Further, under Connecticut
law, no  distribution  may be made if, after  giving  effect  thereto,  the
corporation  would not be able to pay its debts as they  become  due in the
usual course of business,  or the corporation's  total assets would be less
than the sum of its total liabilities plus the amount that would be needed,
if the corporation were to be dissolved at the time of the distribution, to
satisfy the  preferential  rights upon  dissolution of  shareholders  whose
preferential rights are superior to those receiving the distribution.

     AMENDMENT OF  CERTIFICATE  OF  INCORPORATION.  Under  Delaware  law, a
corporation  may amend its  certificate  of  incorporation  if, among other
things,  such amendment is approved by a majority of the outstanding  stock
entitled to vote; however,  whenever the certificate of incorporation shall
require  for action by the board of  directors  or by the  stockholders  an
affirmative  vote greater than that normally  provided for by Delaware law,
such provision of the  certificate of  incorporation  may not be amended or
repealed  without such greater vote.  SPX's  Certificate  of  Incorporation
provides  that  Articles  Eighth  (number,   classification  and  power  of
Directors),   Ninth  (stockholder   meetings),   and  Fifteenth   (business
combinations)  of the Certificate of  Incorporation  may only be altered or
amended  by the  affirmative  vote of the  holders  of at least  80% of the
voting  power of all  shares  of SPX;  however,  Article  Fifteenth  may be
amended or altered by a majority of the outstanding stock entitled to vote,
if such amendment or alteration has been approved by at least two-thirds of
the Continuing  Directors (see  "--Business  Combinations  with Substantial
Stockholders" below).

     Under  Connecticut law, with limited  exceptions,  for an amendment to
the certificate of  incorporation  to be adopted,  the board must recommend
the amendment to the  shareholders,  and the shareholders  must approve the
amendment by a majority of the votes entitled to be cast on the amendment.

     AMENDMENT OF BY-LAWS. Under Delaware law, the power to adopt, amend or
repeal  by-laws is vested in the  stockholders  unless the  certificate  of
incorporation  confers the power to adopt, amend or repeal by-laws upon the
directors as well. SPX's  Certificate of Incorporation  provides that, with
limited exceptions,  the Board is expressly  authorized to adopt, amend and
repeal  the SPX's  By-Laws.  SPX's  By-Laws  provide  that,  subject to the
provisions of the Certificate of Incorporation,  the By-Laws may be altered
by a majority  vote of the shares  represented  and  entitled  to vote at a
meeting,  or by the Board of  Directors  through a  majority  vote of those
Directors present at any meeting at which a quorum is present.

     Under  Connecticut  law, a board of directors may  generally  amend or
repeal the corporation's by-laws and a corporation's shareholders may amend
or repeal the  corporation's  by-laws  even  though the by-laws may also be
amended  or  repealed  by its board of  directors.  The  Company's  By-Laws
provide  that the  By-Laws  may be  adopted,  amended  or  repealed  by the
shareholders or Directors.

     STOCKHOLDER PROPOSAL PROCEDURES.  Under SPX's By-Laws, for a matter to
be  properly  brought  before  an  annual  meeting  by a  stockholder,  the
stockholder  must have  given  timely  notice  thereof  in  writing  to the
Secretary of SPX not less than 120 days nor more than 150 days prior to the
anniversary   date  of  the  immediately   preceding   annual  meeting.   A
stockholder's  notice must state as to each matter the stockholder proposes
to bring before the annual meeting:  (1) a brief  description of the matter
desired  to be  brought,  (2)  the  name  and  address  of the  stockholder
proposing  such  action,  (3)  the  class  and  number  of  shares  of  the
corporation  which are beneficially  owned by the stockholder,  and (4) any
material interest of the stockholder in such matter.

     Under  the  Company's  By-Laws,  for a matter to be  properly  brought
before  an annual  meeting  by a  shareholder,  the  shareholder  must be a
shareholder  of record on the date of the  giving of the  notice  described
below and on the record date for the determination of shareholders entitled
to vote at such annual  meeting.  The  shareholder  must give timely notice
thereof in writing to the  Secretary  of the Company not less than 120 days
prior to the anniversary date of the immediately  preceding annual meeting.
However,  if the annual  meeting is called for a date that is not within 30
days before or after such  anniversary  date,  notice must be received  not
later than the tenth day following the day on which such notice of the date
of the annual meeting is mailed or publicized,  whichever  first occurs.  A
shareholder's  notice must state as to each matter the shareholder proposes
to bring before the annual meeting:  (1) a brief  description of the matter
desired to be brought and the reasons for  conducting  such business at the
annual meeting, (2) the name and record address of the shareholder, (3) the
class and number of shares of the corporation which are owned  beneficially
or of  record  by  the  shareholder,  (4)  any  material  interest  of  the
shareholder  in such  business and a  description  of all  arrangements  or
understandings  between such shareholder and any other person in connection
with the proposal or in connection with the acquisition, holding, voting or
disposing  of the  Company's  shares,  and (5) a  representation  that  the
shareholder  intends to appear in person or by proxy at the annual  meeting
to bring such business before the meeting.

     ADVANCE  NOTICE OF STOCKHOLDER  NOMINATIONS OF DIRECTORS.  Under SPX's
By-Laws, nominations for the election of Directors may be made by the Board
of Directors  or a committee  appointed by the Board of Directors or by any
stockholder  entitled to vote in the  elections  of  Directors,  generally.
However,  any stockholder entitled to vote in the election of Directors may
nominate one or more persons for election as Directors at a meeting only if
written  notice of such  stockholder's  intent to make such  nomination has
been given to the  Secretary  of SPX not later than (a) with  respect to an
election to be held at an annual meeting of stockholders, 120 days prior to
the anniversary date of the immediately  preceding annual meeting,  and (b)
with  respect  to  an  election  to  be  held  at  a  special   meeting  of
stockholders,  the close of business on the tenth day following the date on
which  notice of such  meeting is first  given to  stockholders.  Each such
notice  must set forth:  (a) the name and  address of the  stockholder  who
intends to make the  nomination  and of the person to be  nominated,  (b) a
representation that the stockholder is a holder of record of stock entitled
to vote at such  meeting and intends to appear in person or by proxy at the
meeting to nominate the person or persons  specified  in the notice,  (c) a
description of all arrangements or  understandings  between the stockholder
and each nominee and any other person  pursuant to which the  nomination is
to be made by the stockholder,  (d) such other  information  regarding each
nominee as would be  required to be  included  in a proxy  statement  filed
pursuant to the proxy rules of the Commission,  and (e) the consent of each
nominee to serve as a Director if elected.

     Under the Company's  By-Laws,  nominations  of persons for election to
the  Board of  Directors  may be made at any  annual  meeting  by or at the
direction  of the  Board of  Directors  (or any duly  authorized  committee
thereof) or by any  shareholder  who is a shareholder of record on the date
of the giving of the notice  described below and on the record date for the
determination  of  shareholders  entitled to vote at such  annual  meeting.
Shareholders  may nominate one or more persons for election as Directors at
a meeting only if written notice of such shareholder's  intent to make such
nomination  has been given to the  Secretary  of the Company not later than
120 days prior to the anniversary date of the immediately  preceding annual
meeting.  However,  if the annual  meeting is called for a date that is not
within 30 days  before  or after  such  anniversary  date,  notice  must be
received  not  later  than the tenth day  following  the day on which  such
notice  of the  date  of the  annual  meeting  was  mailed  or  publicized,
whichever first occurs. Each such notice must set forth: (a) the name, age,
and business and residence addresses of the person to be nominated, and the
name and address of the shareholder  making the nomination,  (b) the shares
of stock of the Company  which are owned  beneficially  or of record by the
nominee  and the  shareholder  making  the  nomination,  (c) the  principal
occupation  or  employment of the nominee,  (d) a  representation  that the
shareholder  intends  to appear in  person  or by proxy at the  meeting  to
nominate  the  person,   (e)  a   description   of  all   arrangements   or
understandings  between  the  shareholder  and each  nominee  and any other
person  pursuant to which the nomination is to be made by the  shareholder,
(f) such other information regarding each nominee or shareholder making the
nomination as would be required to be included in a proxy  statement  filed
pursuant to the proxy rules of the Commission,  and (g) the consent of each
nominee to serve as a Director if elected.

     INDEMNIFICATION.  Under  Delaware law, a corporation  has the power to
indemnify  director,  officers,  employees  and agents for actions taken in
good faith and in a manner they reasonably believed to be in or not opposed
to the best interests of the corporation, and, with respect to any criminal
action or  proceeding,  had no  reasonable  cause to believe  the  person's
conduct was unlawful.  Delaware law provides that a corporation may advance
expenses of defense (upon receipt of a written  undertaking from the person
seeking the advance to reimburse the corporation if  indemnification is not
appropriate)  and must  reimburse  a  successful  defendant  for  expenses,
including attorneys' fees, actually and reasonably incurred,  and permits a
corporation to purchase and maintain liability  insurance for its directors
and officers.  Under Delaware law, no  indemnification  may be made for any
claim, issue or matter as to which a person has been adjudged by a court of
competent  jurisdiction,  after exhaustion of all appeals therefrom,  to be
liable  to the  corporation,  unless  and only to the  extent  that a court
determines  that the person is entitled to indemnity  for such  expenses as
the court deems proper.

     SPX's  Certificate  of  Incorporation   provides  that  Directors  and
officers  of SPX and those  serving at the  request  of SPX as a  Director,
officer,  employee  or agent  of  another  corporation  or  entity  will be
indemnified  by SPX to the fullest  extent  authorized by Delaware law. The
indemnification  right  includes  the right to be paid by SPX the  expenses
incurred in defending any  proceeding in advance of its final  disposition.
SPX Certificate of Incorporation  provides that the indemnification  rights
conferred by SPX's  Certificate of  Incorporation  are not exclusive of any
other right to which persons seeking  indemnification may be entitled under
any law, bylaw, agreement,  vote of stockholders or disinterested Directors
or otherwise.  SPX is authorized by SPX's  Certificate of  Incorporation to
purchase and maintain insurance on behalf of its Directors and officers.

     Under   Connecticut  law,  unless  the  Certificate  of  Incorporation
provides  otherwise,  a  corporation  formed prior to January 1, 1997 shall
indemnify its directors,  officers,  employees and agents for actions taken
in good faith and, in the case of conduct in his or her official  capacity,
in a manner  they  reasonably  believed to be in or not opposed to the best
interests of the  corporation,  and, with respect to any criminal action or
proceeding,  had no reasonable cause to believe their conduct was unlawful.
Connecticut  law also provides that a  corporation  may advance  reasonable
expenses of defense (upon receipt of a written  undertaking from the person
seeking the advance to reimburse the corporation if  indemnification is not
appropriate  and a written  affirmation of his good faith belief that he or
she has met the relevant  standard of conduct or where  liability  for such
conduct has been eliminated in the Certificate of Incorporation)  and must,
unless limited by the certificate of incorporation,  reimburse a successful
defendant for expenses,  including attorneys' fees, actually and reasonably
incurred,  and permits a  corporation  to purchase and  maintain  liability
insurance for its  directors,  officers,  employees and agents.  Unless the
certificate of incorporation  provides  otherwise,  a corporation must also
provide  indemnification  and the advancement of expenses if a court,  upon
application, determines, among other things, that it is fair and reasonable
to indemnify and make such advances to such person.

     The Company's  Certificate of Incorporation is silent on these issues.
The  Company's  By-Laws  state  that  the  Company  will  provide  for  the
indemnification  and advancement of expenses of directors and others to the
extent properly permitted by law.

     LIMITATION OF LIABILITY. In recent years both Delaware and Connecticut
adopted similar though not identical  statutes  permitting a corporation to
limit the  personal  liability of its  directors  by including  appropriate
language in the corporation's certificate of incorporation.

     Delaware law allows a  corporation  to include in its  certificate  of
incorporation a provision limiting personal liability for a director to the
corporation  or  its  stockholders  for  monetary  damages  for  breach  of
fiduciary  duty as a  director,  provided  that  such  provision  does  not
eliminate  or limit the  liability  of a director (a) for any breach of the
director's duty of loyalty to the corporation or its stockholders,  (b) for
acts or omissions not in good faith or which involve intentional misconduct
or a knowing  violation of law,  (c) under  Section 174 of the Delaware law
concerning unlawful dividends and stock repurchases and redemptions, or (d)
for any transaction  from which the director  derived an improper  personal
benefit.  Such  provision  does not  eliminate or limit the  liability of a
director  for any act or  omission  occurring  prior to the date  when such
provision becomes effective.

     SPX's  Certification  of  Incorporation  has such a  provision.  SPX's
Certificate of Incorporation  also provides that any repeal or modification
of this provision by the  stockholders of SPX will not adversely affect any
right or  protection  of a  Director  of SPX  existing  at the time of such
repeal or modification.

     Under Connecticut law, a corporation can include in its certificate of
incorporation a provision limiting personal liability for a director to the
corporation or its  shareholders for monetary damages for breach of duty as
a director to an amount that is not less than the compensation  received by
the director for serving the  corporation  during the year of the violation
if such breach did not (a) involve a knowing and culpable  violation of law
by the  director,  (b) enable the  director or an  associate  to receive an
improper  personal  economic  gain,  (c)  show a lack of good  faith  and a
conscious  disregard for the duty of the director to the corporation  under
circumstances  in which the director was aware that his conduct or omission
created an  unjustifiable  risk of serious injury to the  corporation,  (d)
constitute a sustained and unexcused  pattern of inattention  that amounted
to an abdication of the director's duty to the  corporation,  or (e) create
liability under Section 33-757 of the  Connecticut  Business Act concerning
improper  distributions and other improper actions. Such provision does not
limit or  preclude  the  liability  of a director  for any act or  omission
occurring prior to the effective date of such provision.

     The Company's Certificate of Incorporation contains such a provision.

     BUSINESS COMBINATIONS WITH SUBSTANTIAL STOCKHOLDERS. SPX's Certificate
of  Incorporation  requires  the  approval  of  a  supermajority  of  SPX's
stockholders   for   certain   business   combinations   with   Substantial
Stockholders (defined below).

     Notwithstanding  any lesser  percentage  permitted  by law,  except as
provided  below,  80% of the  voting  power of SPX's  stockholders,  voting
together as a single  class,  must  approve any of the  following  Business
Combinations:

          (a) Any  merger  of SPX or any of its  subsidiaries  with (i) any
     Substantial  Stockholder  or (ii) any other  corporation  which is, or
     after such merger or consolidation would be, an Affiliate or Associate
     of a Substantial Stockholder; or

          (b) Any sale,  lease,  exchange,  mortgage,  pledge,  transfer or
     other  disposition  to  or  with  any  Substantial  Stockholder,   its
     Affiliate  or  Associate  of (i) any  assets of SPX or (ii) any of its
     subsidiaries,  in each case having an  aggregate  Fair Market Value of
     $10,000,000 or more; or

          (c) The issuance or transfer by SPX or any of its subsidiaries of
     any securities of SPX or any of its  subsidiaries  to any  Substantial
     Stockholder  or its  Affiliate  or  Associate  in  exchange  for cash,
     securities  or other  consideration  having an  aggregate  Fair Market
     Value of $10,000,000 or more; or

          (d) The adoption of any plan or proposal for the  liquidation  or
     dissolution  of  SPX  proposed  by or on  behalf  of  any  Substantial
     Stockholder or its Affiliate or Associate; or

          (e) Any  reclassification  of securities  (including  any reverse
     stock  split),   or   recapitalization   of  SPX,  or  any  merger  or
     consolidation  of  SPX  with  any of its  subsidiaries,  or any  other
     transaction  (whether  or not with or into or  otherwise  involving  a
     Substantial Stockholder) which has the effect, directly or indirectly,
     of increasing the proportionate share of the outstanding shares of any
     class  of  equity  or  convertible  securities  of  SPX  or any of its
     subsidiaries  which is directly or indirectly owned by any Substantial
     Stockholder or its Affiliate or Associate.

     The 80% requirement does not apply (i) to Business  Combinations where
the SPX's  stockholders  do not  receive  any cash or other  consideration,
solely in their  capacities as stockholders,  and the Business  Combination
has been approved by two-thirds of the Continuing Directors then in office,
or (ii) to all other  Business  Combinations  which have been  approved  by
two-thirds of the Continuing Directors then in office and which satisfy all
of the following conditions:

          (a) The aggregate  amount of cash and the Fair Market Value as of
     the  date  of  the  consummation  of  the  Business  Combination  (the
     "Consummation  Date")  of the  consideration  other  than  cash  to be
     received  per share by holders of SPX  Common  Stock in such  Business
     Combination is at least equal to the highest of the following:

               (A) the  highest per share price  (including  any  brokerage
          commissions, transfer taxes and soliciting dealers' fees) paid in
          order to  acquire  any shares of SPX  Common  Stock  beneficially
          owned by the  Substantial  Stockholder  which were  acquired  (1)
          within the two-year period  immediately prior to the first public
          announcement  of the  proposal of the Business  Combination  (the
          "Announcement Date") or (2) in the transaction in which it became
          a  Substantial  Stockholder,  whichever is higher,  plus interest
          compounded  annually  from  the  date on  which  the  Substantial
          Stockholder   became  a  Substantial   Stockholder   through  the
          Consummation  Date at the prime rate of interest of Harris  Trust
          and Savings Bank from time to time in effect in Chicago, less the
          aggregate  amount of any cash dividends paid, and the Fair Market
          Value of any  non-cash  dividends  paid,  per share of SPX Common
          Stock from the date on which the Substantial Stockholder became a
          Substantial  Stockholder  through  the  Consummation  Date  in an
          amount up to but not exceeding the amount of such interest; or

               (B) the Fair Market  Value per share of SPX Common  Stock on
          the  Announcement  Date or on the date on which  the  Substantial
          Stockholder  became  a  Substantial  Stockholder,   whichever  is
          higher; or

               (C) the higher of the two numbers  referred to in clause (B)
          above,  multiplied  by a fraction,  the numerator of which is the
          highest per share price  (including  any  brokerage  commissions,
          transfer  taxes and  soliciting  dealers'  fees) paid in order to
          acquire any shares of SPX Common Stock  beneficially owned by the
          Substantial  Stockholder  which were acquired within the two-year
          period  immediately  prior  to the  Announcement  Date,  and  the
          denominator  of which is the Fair  Market  Value per share of SPX
          Common  Stock on the first day in such  two-year  period on which
          the Substantial Stockholder  beneficially owned any shares of SPX
          Common Stock.

          (b) The  consideration to be received by Stockholders is to be in
     cash or in the same form as the Substantial Stockholder has previously
     paid for shares of the same stock. If multiple forms of  consideration
     have  been  used by the  Substantial  Stockholder,  then  the  form of
     consideration  for the Business  Combination  will be cash or the form
     used to acquire the largest  number of shares  previously  acquired by
     the Substantial Stockholder.

          (c) Except as approved by at least  two-thirds of the  Continuing
     Directors  then  in  office,  between  the  time  that  a  Substantial
     Stockholder becomes such and the Business  Combination is consummated,
     there  shall  have been (i) no failure  to  declare  and pay  periodic
     dividends  with respect to any shares of preferred  stock  outstanding
     and (ii) no  reduction  in the annual  rate of  dividends  paid on SPX
     Common Stock (with certain exceptions).

          (d) After becoming such, the  Substantial  Stockholder  shall not
     have  received  any  loans,  advances,  guarantees,  pledges  or other
     financial  assistance or any tax credits or other tax advantages  from
     SPX or  any  of its  subsidiaries  whether  in  anticipation  of or in
     connection with such Business Combination or otherwise.

          (e) A proxy or  information  statement  describing  the  proposed
     Business  Combination  and  complying  with  the  requirements  of the
     Exchange  Act shall  have been  mailed to public  shareholders  of the
     Company at least 30 days prior to the  consummation  of such  Business
     Combination  (whether or not such proxy or  information  statement  is
     required to be mailed pursuant to the Exchange Act).

     "Continuing Director" is defined in SPX's Certificate of Incorporation
as any member of the SPX's Board of Directors who is unaffiliated  with and
not a representative of the Substantial Stockholder and was a member of the
Board  prior  to  the  time  that  the  Substantial  Stockholder  became  a
Substantial Stockholder,  and any successor of a Continuing Director who is
unaffiliated with and not a representative  of the Substantial  Stockholder
and is recommended to succeed a Continuing  Director by at least two-thirds
of the Continuing Directors then on the Board.

     "Fair Market Value" is defined in SPX's  Certificate of Incorporation,
in the case of stock,  as the highest  closing sale price during the 30-day
period immediately  preceding the date in question of a share of such stock
on the principal United States  securities  exchange on which such stock is
listed, and, in the case of property other than stock or stock for which no
quotation is  available,  the value of the property as  determined  in good
faith by at least two-thirds of the Continuing Directors.

     "Substantial   Stockholder"   is  defined  in  SPX's   Certificate  of
Incorporation  as  any  person  (other  than  the  Company  or  any  of its
subsidiaries) who or which:

     (i)    is the beneficial owner,  directly or indirectly,  or more than
            ten percent of the voting power of the outstanding voting stock
            of SPX; or

     (ii)   is an  Affiliate  of SPX and at any time  within  the  two-year
            period  immediately  prior  to the  date  in  question  was the
            beneficial  owner,  directly or  indirectly,  of ten percent or
            more of the voting power of the then  outstanding  voting stock
            of SPX; or

     (iii)  is an assignee of or has  otherwise  succeeded to any shares of
            the  voting  stock of SPX  which  were at any time  within  the
            two-year  period  immediately  prior  to the  date in  question
            beneficially  owned  by any  Substantial  Stockholder,  if such
            assignment or succession shall have occurred in the course of a
            transaction  or series of  transactions  not involving a public
            offering within the meaning of the Securities Act of 1933.

     The Company's  Certificate of Incorporation does not have a comparable
provision.

     BUSINESS  COMBINATION  STATUTES.  Under Delaware law, a corporation is
prohibited  from engaging in any business  combination  with any Interested
Stockholder  (defined as the beneficial  owner of 15% or more of the voting
power of a company)  for a period of three  years  following  the date that
such stockholder became an Interested Stockholder, unless:

          (a) prior to such date, the board of directors of the corporation
     approved  either the business  combination  or the  transaction  which
     resulted in the stockholder becoming an Interested Stockholder, or

          (b) upon  consummation of the  transaction  which resulted in the
     stockholder  becoming  an  Interested   Stockholder,   the  Interested
     Stockholder owned at least 85% of the voting stock of the corporation,
     or

          (c) on or subsequent to such date,  the business  combination  is
     approved  by the board of  directors  and  authorized  at an annual or
     special meeting of stockholders,  and not by written  consent,  by the
     affirmative  vote of at least  two-thirds  of the  outstanding  voting
     stock which is now owned by the Interested Stockholder.

     Under  Delaware  law, a  corporation  has the option to opt-out of the
above  business   combination   statute.   Neither  SPX's   Certificate  of
Incorporation  nor its By-Laws excludes SPX from the  restrictions  imposed
thereunder.

     Under  Connecticut  law, a corporation  may not engage in any business
combination  with any  Interested  Shareholder  (defined as the  beneficial
owner of 10% or more of the voting power of a corporation)  for a period of
five years  following the date that such  stockholder  became an Interested
Shareholder  (the "Stock  Acquisition  Date"),  unless,  prior to the Stock
Acquisition  Date, the board of directors of the corporation and a majority
of the non-employee directors (of which there shall be two) approved either
the  business   combination  or  the  transaction  which  resulted  in  the
shareholder becoming an Interested Shareholder before the Stock Acquisition
Date. A corporation may opt out of the above provision through an amendment
to the  corporation's  certificate  of  incorporation  or by-laws  approved
through the  affirmative  vote of the holders of  two-thirds  of the voting
power of the outstanding voting stock excluding Interested Shareholders and
their  affiliates  and  associates.  However,  no such  amendment  shall be
effective until 18 months after such  shareholder  vote and shall not apply
to any business  combination  with an  Interested  Shareholder  whose Stock
Acquisition Date is on or prior to the effective date of such amendment.

     Neither Company's Certificate of Incorporation nor its By-Laws exclude
the Company from the restrictions imposed thereunder.

     Connecticut  law also provides that any business  combination  with an
Interested  Shareholder  that was not  approved  by the board of  directors
prior to the  Stock  Acquisition  Date,  must be  approved  by the board of
directors,  80% of the voting power and  two-thirds of the voting power not
controlled  by  the  Interested  Stockholder  or  meet  certain  conditions
regarding minimum price and type of consideration.

     SPX'S RIGHTS PLAN.  SPX entered into a Rights  Agreement with The Bank
of New York, as rights agent, on June 25, 1996, as amended October 22, 1997
("the SPX Rights Agreement"). Under the Rights Plan, SPX's Board declared a
dividend of one SPX Right for each  outstanding  share of SPX Common  Stock
held of record on June 25,  1996.  Each SPX Right  entitles  its  holder to
purchase,   upon  the   occurrence  of  certain   specified   events,   one
one-thousandth  of a share of SPX Series A Preferred  Stock, at an exercise
price of $200, subject to adjustment. At no time do the SPX Rights have any
voting  rights.  The SPX  Rights  will no longer be  exercisable  after the
earlier  of (i) June 25,  2006,  (ii) the  redemption  of the SPX Rights or
(iii) the exchange of the SPX Rights for SPX Common Stock.  The description
and terms of the SPX Rights are set forth in the SPX Rights Agreement.

     In general,  pursuant to the SPX Rights Agreement, upon the occurrence
of  specified  triggering  events,  such as the  acquisition  by any person
(other than SPX or any of its subsidiaries) of the beneficial  ownership of
securities  representing  20% or more of the  outstanding  SPX Common Stock
without the prior approval of SPX's Board,  each holder of a SPX Right will
have the right to receive,  upon exercise of the SPX Right,  that amount of
SPX Common  Stock  having a market  value  equal to two times the  exercise
price of the SPX Right. The SPX Rights  Agreement  further provides that if
SPX is acquired in a merger or other business combination or SPX sells more
than 50% of its assets and such transaction is not approved by SPX's Board,
SPX's stockholders will have the right to receive, with respect to each SPX
Right,  common stock of the acquiring  company  having a value equal to two
times the exercise price of the SPX Right.

     Under  certain  circumstances,  SPX may  redeem  the SPX  Rights for a
redemption price of $.01 per SPX Right.

     THE  COMPANY'S  RIGHTS  PLAN.  The  Company  entered  into the  Rights
Agreement  with The  Connecticut  Bank and Trust  Company,  N.A., as rights
agent,  on June 21,  1989.  The  Company  has  reserved  600,000  shares of
Preferred  Stock,   without  par  value,  for  issuance  under  the  Rights
Agreement.

     Under the Rights Agreement, the Company's Board declared a dividend of
one Right for each outstanding  Share held of record on June 30, 1989. Each
Right  entitles  its holder to  purchase,  upon the  occurrence  of certain
specified  events,  one  one-hundredth of a share of the Company's Series A
Cumulative  Participating  Preferred  Stock,  no par value  (the  "Series A
Preferred  Stock"),  at an  exercise  price  of $65 per one  one-thousandth
share,  subject to  adjustment.  At no time do the  Rights  have any voting
rights.  The Rights will no longer be exercisable  after the earlier of (i)
June 25, 1999,  (ii) the  redemption of the Rights or (iii) the exchange of
the  Rights for  Shares.  The  description  and terms of the Rights are set
forth in the Rights Agreement.

     In general,  pursuant to the Rights Agreement,  upon the occurrence of
specified  triggering events,  such as the acquisition by any person (other
than  SPX or  any of its  subsidiaries)  of  the  beneficial  ownership  of
securities  representing  20% or more of the Company's  outstanding  Common
Stock without the prior approval of the Company's  Board,  each holder of a
Right will have the right to  receive,  upon  exercise  of the Right,  that
amount of the  Company's  Common  Stock  having a market value equal to two
times  the  exercise  price of the  Right.  The  Rights  Agreement  further
provides  that if the  Company is  acquired  in a merger or other  business
combination  or the  Company  sells  more than 50% of its  assets  and such
transaction  is  not  approved  by  the  Company's   Board,  the  Company's
shareholders  will have the right to receive,  with  respect to each Right,
common stock of the  acquiring  company  having a market value equal to two
times the exercise price of the Right.

     Under  certain  circumstances,   SPX  may  redeem  the  Rights  for  a
redemption price of $.01 per Right.

     CONSIDERATION OF NON-STOCKHOLDER CONSTITUENCIES. Under Delaware law, a
board  of  directors   may   consider  the  impact  of  its   decisions  on
constituencies  other than  stockholders.  Such  constituencies may include
creditors,  customers,  employees,  and  perhaps the  community  generally.
However,  the interests of other  constituencies  may be considered only if
there are rationally related benefits accruing to the stockholders or there
is some reasonable relationship to general stockholder interests.

     SPX's  Certificate of Incorporation  also provides that in determining
whether an  Acquisition  Proposal is in the best  interests  of SPX and its
stockholders,  the Board  shall  consider  all  factors it deems  relevant,
including the  consideration  being  offered in the  Proposal,  not only in
relation to the then current market price, but also in relation to the then
current value of SPX in a freely negotiated  transaction and in relation to
the Board's  estimate of the future value of SPX as an independent  entity;
and the social,  legal and  economic  effects  upon  employees,  suppliers,
customers and on the communities in which SPX is located, as well as on the
long term business prospects of SPX.

     Under  Connecticut law, a director of a corporation must consider,  in
determining what he or she reasonably  believes to be in the best interests
of the corporation in connection with, among other things, a plan of merger
or share exchange, (1) the long-term as well as the short-term interests of
the corporation,  (2) the interests of the shareholders,  long-term as well
as short-term,  including the possibility  that those interests may be best
served by the continued independence of the corporation,  (3) the interests
of the corporation's employees, customers, creditors and suppliers, and (4)
community and societal  considerations  including those of any community in
which  any  office or other  facility  of the  corporation  is  located.  A
director may also consider any other factors he or she reasonably considers
appropriate in determining what he or she reasonably  believes to be in the
best interests of the corporation.


                        MARKET PRICES AND DIVIDENDS

     SPX Common Stock is listed and  principally  traded on the NYSE (under
the symbol  "SPW") and is also  listed on the PE. The Shares are listed and
principally  traded on the NYSE  (under the symbol  "ECH"),  the PE and the
International Stock Exchange in London. The following table sets forth, for
the periods indicated, the high and low sale prices per share of SPX Common
Stock and per Share as reported on the NYSE Composite Tape.

<TABLE>
<CAPTION>
                                                    SPX COMMON STOCK                                 SHARES
                                     ---------------------------------------------  ----------------------------------------
                                         High             Low         Dividends        High           Low        Dividends
                                         ----             ---         ---------        ----           ---        ---------
<S>                                     <C>             <C>              <C>          <C>            <C>           <C>
1995
   First Quarter..................      17-3/8          14-1/4           .10          38-1/2         29-7/8        0.190
   Second Quarter.................      15-1/8          10-3/4           .10          38-3/4           34          0.205
   Third Quarter..................        16            11-1/8           .10          39-5/8         33-7/8        0.205
   Fourth Quarter.................        17            14-1/8           .10          39-1/2         33-7/8        0.205
1996
   First Quarter..................      18-1/8          13-5/8           .10          38-3/4         32-5/8        0.205
   Second Quarter.................      27-1/8            18             .10          37-7/8         33-3/8        0.220
   Third Quarter..................      31-5/8          21-5/8           .10          37-5/8         29-3/4        0.220
   Fourth Quarter.................      40-1/2          26-7/8           .10          34-1/4         30-1/4        0.220
1997
   First Quarter..................      49-3/4          37-3/8           .10          35-1/4         29-1/2        0.220
   Second Quarter.................      70-5/8          41-7/8            -           36-1/2         31-1/8        0.225
   Third Quarter..................      65-3/4            49              -           38-9/16        33-5/8        0.225
   Fourth Quarter.................      70-3/8          58-7/16           -           36-5/8        29-13/16       0.225
1998
   First Quarter
   (through February 13, 1998)....      76-1/8          65-3/16           -           39-5/8         34-1/2        0.225
</TABLE>

     On February  13,  1998,  the last full  trading day prior to the first
public  announcement  by SPX  of the  Proposed  Business  Combination,  the
reported  high and low sale prices per share and closing price per share of
SPX Common Stock and per Share on the NYSE were as follows:

                                             High          Low          Close
                                             ----          ---          -----
The Company........................         39-1/4        38-1/2       38-7/8
SPX................................         75-5/8        74-3/4       75-1/16

     On                   ,  1998,  the last full  trading day prior to the
date of this  Prospectus,  the reported  high and low sale prices per share
and closing  price per share of SPX Common  Stock and per Share on the NYSE
were as follows:

                                             High          Low           Close
                                             ----          ---           -----
The Company........................         [    ]        [    ]        [    ]
SPX................................         [    ]        [    ]        [    ]

     SHAREHOLDERS ARE URGED TO OBTAIN CURRENT MARKET  QUOTATIONS FOR SHARES
OF SPX COMMON STOCK AND FOR THE SHARES.


                      COMPARATIVE PER SHARE DATA
                             (unaudited)

     The following table presents  historical per share data of SPX and the
Company  and pro  forma  combined  per  share  data as if the Offer and the
Merger had occurred as of September 1, 1996  assuming an Exchange  Ratio of
0.4796.  The table also  presents the Company's  pro forma  equivalent  per
share data.  See "Selected  Historical  Financial  Data of SPX,"  "Selected
Historical Financial Data of the Company," and "Selected Pro Forma Combined
Financial  Data"  included  elsewhere  herein  for  additional  information
regarding this pro forma information. The pro forma combined per share data
is intended  for  information  purposes,  and does not purport to represent
what the combined entity's results of continuing  operations would actually
have been had the  transaction  in fact  occurred  at an earlier  date,  or
project the results for any future date or period.  The  selected pro forma
combined financial data do not give effect to any restructuring  costs, nor
to  any  cost  savings  that  could  result  from  the  combination  of the
companies.  Any  integration and  rationalization  of the operations of the
Company may include  certain  costs which may in turn result in a charge to
earnings.  Such a charge,  which cannot now be quantified,  may be material
and would be recognized in the period in which such a restructuring occurs.
SPX management believes that the combined company can achieve approximately
$125 million of annualized  expense savings,  which have not been reflected
in the pro forma combined  financial data. Upon  consummation of the Offer,
the actual  financial  position and results of  operations  of the combined
company  will differ,  perhaps  significantly,  from the pro forma  amounts
reflected  herein  due  to a  variety  of  factors,  including  changes  in
operating  results between the date of the pro forma financial  information
and the date on which the Offer is consummated and  thereafter,  as well as
the factors discussed under "Risk Factors."

<TABLE>
<CAPTION>
                                                                              The Company
                                       SPX       The Company    Pro forma      Pro forma
                                    Historical    Historical   Combined (a)   Equivalent (b)
                                    ----------    ----------   ------------   --------------
<S>                                 <C>           <C>           <C>           <C>
Income (loss) per
common share from
continuing operations
(primary) (c):
  Three months ended
   November 30, 1997                $  0.80       $  0.52       $  0.54       $  0.26
  Year ended August 31, 1997          (3.56)        (0.75)        (3.84)        (1.84)
Dividends per common share (d):
  Three months ended
   November 30, 1997                    --           0.225          --            --
  Year ended August 31, 1997           0.30          0.89          0.30          0.14
Book value per common share:
   November 30, 1997                   1.08         14.84         27.72         13.29
   August 31, 1997                     1.78         14.60         26.24         12.59

Pro forma income (loss) from
continuing operations under
FAS 128:
 Three months ended 
 November 30, 1997
  Basic                                0.83          0.52          0.55          0.26
  Diluted                              0.80          0.52          0.54          0.26
 Year ended August 31, 1997
  Basic                               (3.65)        (0.75)        (3.87)        (1.86)
  Diluted                             (3.56)        (0.75)        (3.84)        (1.84)

<FN>
(a)  See "Selected Pro Forma Combined Financial Data of SPX and the Company."

(b)  The Company pro forma equivalent per share information  represents the
     pro forma  combined per share  information  multiplied  by an Exchange
     Ratio of 0.4796.

(c)  Excluding  special  charges and gains,  pro forma combined  income per
     common  share  from  continuing  operations  would have been $1.56 per
     share ($0.75 per equivalent share) for the year ended August 31, 1997.
     Additionally,  SPX  management  believes that the combined  entity can
     achieve  approximately  $125 million of  annualized  expense  savings,
     which  have not  been  reflected  in the pro  forma  results.  If such
     savings were assumed to be achieved and special  charges and gains are
     excluded,  pro forma combined  income per common share from continuing
     operations  would  have been  $0.99 per share  ($0.47  per  equivalent
     share),  and $3.29 per share  ($1.58 per  equivalent  share),  for the
     three months ended November 30, 1997 and for the year ended August 31,
     1997, respectively.

(d)  In April of 1997,  SPX  eliminated  its  quarterly  cash  dividend and
     stated that distribution to shareholders  would be in the form of open
     market  purchases  of SPX Common  Stock  when  deemed  appropriate  by
     management.

</FN>
</TABLE>


                 SELECTED HISTORICAL FINANCIAL DATA OF SPX
                    (in millions, except per share data)

     The  following  table  presents the selected  historical  statement of
income and other  financial  data of SPX. The financial  data as of and for
the nine months  ended  September  30, 1997 and 1996 have been derived from
the unaudited quarterly financial  statements of SPX. The financial data as
of and for the fiscal  years ended  December 31, have been derived from the
audited  financial  statements of SPX. In the opinion of SPX's  management,
the unaudited  financial  statements  from which the financial data for the
nine months ended  September  30, 1997 and 1996 have been derived have been
prepared on a basis  consistent with the audited  financial  statements and
contain the adjustments,  consisting only of normal recurring  adjustments,
necessary  to  present  fairly  the  information  set  forth  therein.  The
operating  results for the nine  months  ended  September  30, 1997 are not
necessarily  indicative  of the results  that may be expected  for the year
ended December 31, 1997. SPX's selected historical financial data should be
read in conjunction  with, and are qualified in their entirety by reference
to, the historical  financial  statements  (and related notes) of SPX which
are  incorporated  by reference  herein.  See "Available  Information"  and
"Incorporation  of Documents by  Reference."  See  "Business of SPX and the
Company--SPX--Subsequent  Developments"  for a  discussion  of  SPX's  1997
reported results of operations for the fourth quarter and full year period.

<TABLE>
<CAPTION>
                     As of and for the
                     nine months ended
                       September 30,                       As of and for the year ended December 31,
                       -------------         --------------------------------------------------------------------
                     1997(a)      1996(b)       1996(b)        1995         1994(c)      1993(d,e)       1992
                 ------------  ------------  ------------  ------------  ------------  ------------  ------------
<S>              <C>           <C>           <C>           <C>           <C>           <C>           <C>
Statement of
income data:
- --------------
Revenues         $ 680.6(a)    $ 857.9       $ 1,109.4     $ 1,098.1     $ 1,079.9     $ 747.2       $ 801.2
Cost of
 products sold     492.6         655.8           850.1         853.5         821.5       508.0         533.2
Selling,
 general and
 admin.            129.7         142.9           186.5         194.5         198.0       204.1         209.9
Other
 operating
 expenses,
 net (f)             2.8           1.4             1.9           8.3           2.9        53.4(c)        7.8
Special
 charges (g)         6.5(h)       15.9(i)         87.9(i)       10.7(i)        ---        27.5(j)        ---
                 ------------  ------------  ------------  ------------  ------------  ------------  ------------
Operating
 income (loss)      49.0          41.9           (17.0)         31.1          57.5       (45.8)         50.3
Other expense
 (income), net     (73.1)(a)       0.5            (0.7)         (3.0)          0.1      (102.9)(e)       1.2
Interest
 expense, net       10.6          24.9            31.8          35.7          35.2        15.9          15.1
                 ------------  ------------  ------------  ------------  ------------  ------------  ------------
Income (loss)
 before income
 taxes             111.5          16.5           (48.1)         (1.6)         22.2        41.2          34.0
Income taxes        55.0           6.4             7.6          (0.2)          9.1        28.1          13.4
                 ------------  ------------  ------------  ------------  ------------  ------------  ------------
Income (loss)
 from
 continuing
 operations      $  56.5       $  10.1       $   (55.7)    $    (1.4)    $    13.1     $  13.1       $  20.6
Discontinued
 operation (k)       ---           ---             ---          (2.8)          1.0         2.1           ---
Cumulative
 effect of
 accounting
 changes (l)         ---           ---             ---           ---           ---       (31.8)         (5.7)
Extraordinary
 items,
 net of
 taxes (m)         (10.3)         (1.1)           (6.6)         (1.1)          ---       (24.0)          ---
                 ------------  ------------  ------------  ------------  ------------  ------------  ------------
Net income
 (loss)          $  46.2       $   9.0       $   (62.3)    $    (5.3)    $    14.1     $ (40.6)      $  14.9
                 ============  ============  ============  ============  ============  ============  ============
Primary
 income (loss)
 from
 continuing
 operations
 per share       $   4.17      $   0.73      $    (3.98)   $    (0.10)   $     1.02    $   1.04       $  1.48
Weighted
 average
 number of
 common shares
 outstanding        13.547(n)     13.881          13.998        13.174        12.805      12.604        13.856
Dividends per
 share           $   0.10(n)   $   0.30      $     0.40    $     0.40    $     0.40    $   0.40       $  0.40
Pro forma
 income (loss)
 from
 continuing
 operations
 per share
 under FAS 128:
  Basic          $   4.34      $   0.74      $    (4.04)   $    (0.10)   $     1.02    $   1.04       $  1.48
  Diluted        $   4.17      $   0.73      $    (3.98)   $    (0.10)   $     1.02    $   1.04       $  1.48
Other financial
data:
- ---------------
 EBITDA(o)       $   74.8      $  89.6       $   111.7     $    85.3     $    96.0     $   6.1        $ 75.6
 Total assets
                    540.9        806.7           616.0         831.4         929.0     1,024.4         560.3
 Total debt         196.2        285.8           229.3         319.8         415.2       430.2         174.3
 Shareholders'
  equity             14.6(n)     173.7           105.9         162.2         158.7       145.4         185.5
 Capital
  expenditures       15.6         12.0            20.2          31.0          48.5        15.1          20.4
 Depreciation
  and amort          19.3         31.8            40.8          43.5          38.5        24.4          25.3


Note: The accompanying notes are an integral part of this selected
      historical financial data.

             NOTES TO SELECTED HISTORICAL FINANCIAL DATA OF SPX
                    (in millions, except per share data)

<FN>

(a)  During the nine months ended  September 30, 1997,  SPX sold its Sealed
     Power division for $223 in gross cash proceeds.  SPX recorded a pretax
     gain of  $71.9,  or $31.2  after-tax.  Annual  1996  revenues  of this
     division were approximately  $230. See "Pro Forma Adjusted  Historical
     Financial Data of SPX."

(b)  During  1996,  SPX sold its Hy-Lift  division for  approximately  $15.
     Annual 1995 revenues of this division were approximately $45. See "Pro
     Forma Adjusted Historical Financial Data of SPX."

(c)  Effective  December 31, 1993, SPX acquired the balance of Sealed Power
     Technologies  ("SPT")  for $39.  SPX  previously  owned 49% of SPT and
     accounted  for its  investment  using the  equity  method.  SPT's 1993
     revenues were $392. As a result of this acquisition,  SPX was required
     to recognize its share of SPT's losses, $26.9, in 1993. Also, in 1993,
     SPX initiated consolidation of Sealed Power Europe Limited Partnership
     which  required  recognition of cumulative  losses of the  partnership
     since its  inception,  resulting in a charge of $21.5.  These  charges
     have been included in other operating expenses, net.

(d)  During 1993, SPX acquired Allen  Testproducts  and its related leasing
     company  for $102.  Annual  1992  revenues  of this  acquisition  were
     approximately $83.

(e)  During  1993,  SPX divested  its Sealed  Power  Replacement  and Truth
     divisions for a gain of $105.4 ($64.2 after-tax). Annual 1992 revenues
     of these divisions were approximately $247.

(f)  Other   operating   expenses,    net,   include    goodwill/intangible
     amortization, minority interest, and earnings from equity interests.

(g)  Special charges include  certain legal costs,  restructuring  charges,
     and write-off of goodwill.

(h)  During the nine months ended  September 30, 1997,  SPX recorded a $6.5
     charge  ($4.2  after-tax)  to record  anticipated  future  legal costs
     associated with ongoing patent litigation.

(i)  The   restructuring   charges  in  1996  and  1995  include  costs  to
     consolidate  five  Service  Solution  divisions  and a  related  early
     retirement program, costs to downsize several international locations,
     costs of an additional domestic early retirement program, and costs to
     close a European  foundry.  Also during 1996,  SPX  recognized a $67.8
     goodwill  write-off,  with no related tax  benefit.  The  goodwill was
     related to the 1988 and 1993  acquisitions of Bear Automotive  Company
     and of Allen Testproducts, respectively.

(j)  During 1993,  SPX recognized a $27.5 ($18.5  after-tax)  restructuring
     charge  to  combine   its  Bear   Automotive   operation   with  Allen
     Testproducts.

(k)  During  1995,  SPX sold SPX Credit  Corporation  and recorded a pretax
     loss of $4.8 ($3.0 after-tax). The financial results of this operation
     are  included  as  a  discontinued   operation  through  the  date  of
     divestiture.

(l)  During 1993, SPX adopted new accounting  methodology  for its ESOP and
     reflected  its 49% share of SPT's  adoption of SFAS No. 106  regarding
     accounting for postretirement  benefits other than pensions.  In 1992,
     SPX adopted new accounting  methodology  for  postretirement  benefits
     other than pensions and for income taxes.

(m)  During the nine months  ended  September  30,  1997,  SPX tendered for
     substantially   all  ($126.7)  of  its   outstanding  11  3/4%  senior
     subordinated  notes. SPX recorded an extraordinary item, net of taxes,
     of $10.3  for the  costs to  purchase  the  notes.  During  1996,  SPX
     purchased $99.9 of these notes and recorded an extraordinary item, net
     of taxes,  of $6.6 for the costs to purchase  the notes.  During 1995,
     SPX purchased $31.7 of these notes and recorded an extraordinary item,
     net of taxes,  of $1.1 for the costs to  purchase  the  notes.  During
     1993,  SPX recorded the costs  associated  with  prepayment of certain
     company  and SPT  indebtedness  totaling  $24.0,  net of taxes,  as an
     extraordinary item.

(n)  During the nine months ended  September 30, 1997, SPX purchased  2.147
     common shares through a Dutch Auction self-tender offer for $56.00 per
     share. As of September 30, 1997, SPX had purchased an additional 0.376
     shares through open market purchases.  Also, concurrent with the Dutch
     Auction, SPX announced the elimination of quarterly cash dividends and
     stated that future  distributions to shareholders would be in the form
     of open market purchases of common stock,  when deemed  appropriate by
     management.

(o)  EBITDA  represents  operating  income (loss) before  special  charges,
     depreciation  and  amortization.  EBITDA is not presented herein as an
     alternative  measure of  operating  results,  cash flow (as defined by
     generally  accepted  accounting  principles) or liquidity and does not
     necessarily  represent the cash available to fund cash requirements of
     the combined  company.  EBITDA is instead  included  because it is one
     measure  used by certain  investors  as an  indicator  of a  company's
     operating performance and its ability to service indebtedness.
</FN>
</TABLE>


             SELECTED HISTORICAL FINANCIAL DATA OF THE COMPANY
                    (in millions, except per share data)

     The following table presents selected  historical  statement of income
and other  financial data of the Company.  The financial data as of and for
the three  months  ended  November 30, 1997 and November 30, 1996 have been
derived  from the  unaudited  financial  statements  of the  Company in the
Company's  Quarterly  Reports  on Form  10-Q  for the  three  months  ended
November  30, 1997 and 1996.  The  financial  data as of and for the fiscal
years  ending  August 31,  have been  derived  from the  audited  financial
statements  of the Company and  selected  financial  data  presented in the
Company's  Annual  Report on Form 10-K for the fiscal year ended August 31,
1997.  The operating  results for the three months ended  November 30, 1997
are not necessarily  indicative of the results that may be expected for the
year ended August 31, 1998.  The Company's  selected  historical  financial
data  should  be read in  conjunction  with,  and are  qualified  in  their
entirety by reference to, the historical  financial statements (and related
notes) of the Company which are  incorporated  by reference  herein (except
for the report of the Company's  independent  accountants  incorporated  by
reference  in the  Company's  1997 Annual  Report on Form 10-K which is not
incorporated  herein by  reference  because  the  consent of the  Company's
independent  accountants  has  not  yet  been  obtained).   See  "Available
Information" and "Incorporation of Documents by Reference."


<TABLE>
<CAPTION>

                                                    As of and
                                                    for Three
                                                   months ended
                                                   November 30,            As of and for the fiscal Year ended August 31,
                                             ----------------------- --------------------------------------------------------- 
                                               1997         1996        1997       1996         1995       1994        1993
                                               ----         ----        ----       ----         ----       ----        ----
Statement of income data:
- -------------------------
<S>                                          <C>          <C>        <C>          <C>         <C>        <C>         <C>
Net sales                                    $  889.5     $  850.9   $ 3,568.6    $ 3,128.7   $ 2,717.9  $ 2,229.5   $ 1,944.5
Cost of goods sold                              671.1        635.0     2,707.1      2,309.0     1,932.5    1,571.3     1,378.0
Selling and administrative expenses             159.2        149.2       640.1        574.6       531.3      468.5       420.4
Repositioning and other special charges (a)         -            -       254.1            -           -          -           -
Gain on sales of businesses (b)                     -            -       (28.6)           -           -          -           -
                                             --------     --------   ---------    ---------   ---------  ---------   ---------
Income (loss) from operations                    59.2         66.7        (4.1)       245.1       254.1      189.7       146.1
Interest expense, net                             9.8          8.0        40.6         32.9        23.6       11.7         8.5
                                             --------     --------   ---------    ---------   ---------  ---------   ---------
Income (loss) before taxes                       49.4         58.7       (44.7)       212.2       230.5      178.0       137.6
Provision for taxes                              16.8         20.6         2.2         70.0        76.1       56.9        44.0
                                             --------     --------   ---------    ---------   ---------  ---------   ---------
Income (loss) before cumulative                                                             
 effect of accounting change                     32.6         38.1       (46.9)       142.2       154.4      121.1        93.6
Cumulative effect of accounting change (c)          -            -           -            -           -        2.6           -
                                             --------     --------   ---------    ---------   ---------  ---------   ---------
Net income (loss)                            $   32.6     $   38.1   $   (46.9)   $   142.2    $  154.4   $  123.7   $    93.6
                                             ========     ========   ==========   =========    ========   ========   =========
Average shares outstanding                     63.132       62.347      62.601       61.919      59.476    58.996       58.560
Primary net income (loss) per share (d)      $   0.52     $   0.61   $   (0.75)   $    2.30    $   2.60  $   2.10    $    1.60
Dividends per share                          $  0.225     $   0.22   $    0.89    $    0.85    $   0.79  $   0.73    $    0.70
                                                                                            
Other financial data:                                                                       
- --------------------                                                                        
EBITDA (e)                                   $   88.9     $   93.9   $   335.3    $   336.0    $  330.7  $  253.9    $   205.8
Total assets                                  2,365.5      2,453.8     2,374.2      2,130.8     1,961.0   1,577.4      1,263.3
Total debt                                      761.4        769.9       757.9        495.9       507.1     308.3        164.2
Shareholders' equity                            937.0      1,039.5       913.7      1,008.9       909.3     799.0        713.8
Capital expenditures                             31.5         28.1       149.2        104.4       103.9      73.8         41.5
Depreciation and amortization                    29.7         27.2       113.9         90.9        76.6      64.2         59.7
                                                                                         

Note:  The accompanying notes are an integral part of this
       selected historical financial data.


         NOTES TO SELECTED HISTORICAL FINANCIAL DATA OF THE COMPANY
                    (in millions, except per share data)

<FN>
(a)  During the  Company's  fourth  quarter  of fiscal  1997,  the  Company
     recorded  repositioning  and other special charges of $254.1,  pretax.
     The  repositioning   charge  included  expenses  related  to  facility
     realignments   and   rationalizations,   and  the  write-down  to  net
     realizable value of businesses to be disposed.  In addition,  goodwill
     associated  with  brand  names  no  longer  in use  was  written  off,
     inventory  related to discontinued and rationalized  product lines was
     written down, property, plant and equipment idled by facility closures
     and product line  rationalizations were reduced, and other investments
     and deferred customer acquisition costs were written off.

(b)  During fiscal 1997,  the Company sold two divisions for gross proceeds
     of $75.9. The Company reported a pretax gain of $28.6.

(c)  During fiscal 1994, the Company  adopted a new accounting  methodology
     for income taxes.

(d)  The Company indicates that pro forma diluted loss per share would have
     been less than the  reported  loss per share for the year ended August
     31, 1997.

(e)  EBITDA  represents  operating income (loss) before  repositioning  and
     other special charges,  gain on sales of businesses,  depreciation and
     amortization. EBITDA is not presented herein as an alternative measure
     of  operating  results,  cash flow (as defined by  generally  accepted
     accounting principles) or liquidity and does not necessarily represent
     the cash available to fund cash  requirements of the combined company.
     EBITDA is instead  included  because it is one measure used by certain
     investors as an indicator of a company's operating performance and its
     ability to service indebtedness.
</FN>
</TABLE>
                PRO FORMA CONDENSED COMBINED FINANCIAL DATA
                           OF SPX AND THE COMPANY
                                (unaudited)
                    (in millions, except per share data)

PRO FORMA BASIS OF PRESENTATION AND ADJUSTMENTS

     The following  information is presented as if the Offer and the Merger
of SPX and the  Company  occurred on  September  1, 1996 for  statement  of
income and  related  data and on November  30,  1997 for balance  sheet and
related data. This pro forma data assumes that the Offer and the Merger are
effected by the  exchange of shares of SPX Common Stock and cash for shares
of the Company  common stock.  The pro forma data assumes SPX will exchange
0.4796  shares of SPX Common Stock and $12.00 cash for each Share,  whereby
30.731  million shares of SPX Common Stock and $768.9 of cash are issued in
exchange for all outstanding  shares and equivalent  Shares.  The Offer and
the  Merger  will  be  accounted  for  as  a  reverse  acquisition  as  the
shareholders of the Company will own a majority of the  outstanding  shares
of SPX Common Stock upon completion of the  transaction.  Accordingly,  for
accounting purposes, SPX is treated as the acquired company and the Company
is  considered  to be the  acquiring  company.  The purchase  price will be
allocated  to the  assets  and  liabilities  assumed  of SPX based on their
estimated  fair  market  values  at the  acquisition  date.  Under  reverse
acquisition  accounting,  the  purchase  price  of SPX is based on the fair
market  value of SPX's Common  Stock at the date of  acquisition.  The cash
portion of the Offer and the Merger will be accounted  for as a dividend by
SPX.  SPX's  financial  position  and  results  of  operations  will not be
included in the Company's  consolidated  financial  statements prior to the
date the Merger is consummated.

     Under reverse  acquisition  accounting,  the purchase  price of SPX is
based on the fair market  value of SPX Common  Stock.  For purposes of this
pro forma information, the fair market value of SPX Common Stock is assumed
to be $75-1/16 per share,  which reflects the closing price of SPX's Common
Stock as of February 13, 1998.

     The pro forma condensed combined financial statements are intended for
information  purposes,  and do not purport to  represent  what the combined
entity's  results of  continuing  operations  or financial  position  would
actually have been had the transaction in fact occurred at an earlier date,
or project the results for any future date or period.

     The selected pro forma combined financial data does not give effect to
any  restructuring  costs,  nor any cost savings that could result from the
combination of the companies.  Any integration and  rationalization  of the
operations  of the  Company  may  include  certain  costs which may in turn
result  in a  charge  to  earnings.  Such a  charge,  which  cannot  now be
quantified,  may be material and would be recognized in the period in which
such a restructuring  occurs. SPX management  believes that SPX can achieve
approximately  $125 of  annualized  expense  savings,  which  have not been
reflected in the pro forma combined  financial data.  Upon  consummation of
the Offer, the actual  financial  position and results of operations of SPX
will differ,  perhaps  significantly,  from the pro forma amounts reflected
herein due to a variety of factors,  including changes in operating results
between  the date of the pro forma  financial  information  and the date on
which the  Offer is  consummated  and  thereafter,  as well as the  factors
discussed under "Risk Factors."

     In these  pro  forma  condensed  combined  financial  statements,  the
Company's  information  was derived from the Company's  1997 Form 10-K, and
the Company's  1998 First Quarter Form 10-Q.  For SPX's pro forma  adjusted
historical  financial  data, see "Pro Forma Adjusted  Historical  Financial
Data of SPX," presented elsewhere herein.

     These pro forma condensed combined financial statements should be read
in conjunction with the financial  statements and notes thereto included in
SPX's  1996  Form  10-K  SPX's  Quarterly  Report on Form 10-Q for the nine
months ended  September  30,  1997,  the  Company's  1997 Form 10-K and the
Company's 1998 First Quarter Form 10-Q.


                PRO FORMA CONDENSED COMBINED FINANCIAL DATA
                          OF SPX AND THE COMPANY
                FOR THE THREE MONTHS ENDED NOVEMBER 30, 1997
                                (unaudited)
                    (in millions, except per share data)

<TABLE>
<CAPTION>

                                        SPX          The Company      Pro forma
                                      Hist. (a)      Hist.  (a)      Adjustments        Pro forma
                                      ---------      -----------     -----------        ---------
Statement of income data:
- -------------------------
<S>                                  <C>           <C>             <C>                 <C>
Revenues                             $    213.7    $      889.5    $           -       $  1,103.2
Cost of products sold                     152.3           671.1              0.8 (d)        824.2 
Selling, general and
 administrative expense                    42.4           159.2              0.8 (d)        202.4
Other operating expenses, net               1.0               -              5.4 (d)          6.4
Special charges and gains                     -               -                -                -
                                     ----------    ------------    -------------       ----------
Operating income                     $     18.0    $       59.2    $        (7.0)      $     70.2
Other expense (income), net                (0.4)              -                -             (0.4)
Interest expense, net                       3.3             9.8             20.7 (f)         33.8
                                     ----------    ------------    -------------       ----------
Income before income taxes           $     15.1    $       49.4    $       (27.7)      $     36.8
Provision (benefit) for income              5.2            16.8             (8.5)(g)         13.5
 taxes                               ----------    ------------    -------------       ----------
Income (m)                           $      9.9    $       32.6    $       (19.2)      $     23.3
                                     ==========    ============    =============       ==========

Primary income per share (m)         $     0.80                                        $     0.54
Weighted average number of
 common shares outstanding               12.406                           30.723 (h)       43.129
Dividends per share (n)                       -                                                 -
Pro forma income per share                                                     
 under FAS 128:
  Basic                              $     0.83                                        $     0.55
  Diluted                            $     0.80                                        $     0.54

Other financial data:
- ---------------------
EBITDA (o)                           $     24.0    $       88.9    $        (0.3)      $    112.6
Capital expenditures                        5.0            31.5                              36.5
Depreciation and amortization               6.0            29.7              6.7             42.4


Note: The accompanying notes are an integral part of this pro forma
      condensed combined financial data.

</TABLE>


                PRO FORMA CONDENSED COMBINED FINANCIAL DATA
                           OF SPX AND THE COMPANY
                     FOR THE YEAR ENDED AUGUST 31, 1997
                                (unaudited)
                    (in millions, except per share data)



   
                            SPX
                            Pro forma   The         Pro
                            Adjusted    Company     forma       
                            Hist. (b)   Hist. (b)   Adjustments      Pro forma
                            ---------   ---------   -----------      ---------
Statement of income data:           
- -------------------------           
Revenues                    $   825.4   $ 3,568.6   $         -      $ 4,394.0
Cost of products sold           595.7     2,707.1           3.3 (d)    3,306.1
Selling, general and                
 administrative expense         168.7       640.1           3.3 (d)      812.1
Other operating                     
 expenses, net                    3.9           -          21.6 (d)       25.5
Special charges and                 
 gains (k,l)                     81.7       225.5             -          307.2
                            ---------   ---------   -----------      ---------
Operating income (loss)     $   (24.6)  $    (4.1)  $     (28.2)     $   (56.9)
Other expense (income),              
 net                             (2.3)          -                         (2.3)
Interest expense, net            17.8        40.6          78.3 (f)      136.7
                            ---------   ---------   -----------      ---------
Income (loss) before
 income taxes               $   (40.1)  $   (44.7)  $    (106.5)     $  (191.3)
Provision for income                
 taxes                           10.4         2.2         (32.3)(g)      (19.7)
                            ---------   ---------   -----------      ---------
Income (loss) (c,m)         $   (50.5)  $   (46.9)  $    (74.2)      $  (171.6)
                            =========   =========   ==========       ========= 
                                    
Primary income (loss)       
 per share (m)              $   (3.56)                               $   (3.84)
Weighted average number            
 of common shares          
 outstanding                    14.196                    30.468 (h)     44.664
Dividends per share (n)     $    0.30                                $    0.30 
Pro forma income (loss) per
 share under
 FAS 128:
  Basic                     $   (3.65)                               $   (3.87)
  Diluted                   $   (3.56)                               $   (3.84)
                                         
Other financial data:
- ---------------------
EBITDA (o)                  $    82.1   $   335.3   $      (1.6)     $   415.8
Capital expenditures             17.5       149.2                        166.7
Depreciation and amort.          25.0       113.9          26.6          165.5

Note: The accompanying notes are an integral part of this pro forma
      condensed combined financial data.



                 PRO FORMA CONDENSED COMBINED BALANCE SHEET
                           OF SPX AND THE COMPANY
                          AS OF NOVEMBER 30, 1997
                                (unaudited)
                               (in millions)


                           SPX          The Company
                           Historical   Historical     Pro forma
                           Sept.30,1997 Nov.30,1997    Adjust.         Pro forma
                           ----------   -----------    ---------       ---------
Assets:
Current assets             $    340.9   $  1,198.5     $    12.0  (i)  $ 1,551.4
Property, plant and
 equipment, net                 123.0        726.0          40.0  (i)      889.0
Marketable securities               -         81.3             -            81.3
Intangible assets                   -        318.1             -           318.1
Goodwill                         60.7            -         (60.7) (i)      985.9
                                                           985.9  (i)
Other assets                     16.3         41.6          37.5  (e)      181.9
                                                            87.3  (i)
                                                            (0.8) (i)           
                           ----------   ----------     ---------       ---------
  Total assets             $    540.9   $  2,365.5     $ 1,101.2       $ 4,007.6
                           ==========   ==========     =========       =========
Liabilities and
 Shareholders' Equity
Notes payable and current
 maturities of long-term
 debt                      $      3.0   $     58.7     $       -       $    61.7
Other current liabilities       214.6        590.0             -           804.6
Total long-term 
 liabilities                    115.5         77.0         (19.4) (i)      228.4
                                                            55.3  (i)
Long-term debt                  193.2        702.8         821.4  (e)    1,717.4
Total shareholders' equity       14.6        937.0       1,037.4  (j)    1,195.5
                                                          (768.9) (j)
                                                           (14.6) (j)
                                                           (10.0) (i)           
                           ----------   ----------     ---------       ---------
Total liabilities and
 shareholders' equity      $    540.9   $  2,365.5     $ 1,101.2       $ 4,007.6
                           ==========   ==========     =========       =========

Note: The accompanying notes are an integral part of this pro forma
      condensed combined balance sheet.


            NOTES TO PRO FORMA CONDENSED COMBINED FINANCIAL DATA
                           OF SPX AND THE COMPANY
                                (unaudited)
                    (in millions, except per share data)

(a)  Pro forma  information  as of and for the three months ended  November
     30, 1997 includes the actual  historical  results of SPX for the three
     months ended September 30, 1997 (the fiscal quarter end of SPX nearest
     to November 30, 1997) and the actual historical results of the Company
     as of and for the three months ended November 30, 1997.

(b)  Pro forma  information for the year ended August 31, 1997 includes the
     pro forma  adjusted  historical  results of SPX for the twelve  months
     ended June 30, 1997 (the fiscal  twelve month period of SPX nearest to
     August 31, 1997) and the actual historical  results of the Company for
     the year ended  August 31,  1997.  The pro forma  adjusted  historical
     results of SPX for the twelve months ended June 30, 1997 reflect SPX's
     February  1997  disposition  of the  Sealed  Power  division  and  its
     November  1996  disposition  of  the  Hy-Lift  division,  as  if  such
     dispositions  occurred  on July  1,  1996.  See  "Pro  Forma  Adjusted
     Historical Financial Data of SPX," presented elsewhere herein.

(c)  These  pro  forma  financial  statements  reflect  only  results  from
     continuing operations. SPX recorded a $16.4 extraordinary item, net of
     taxes,  in the twelve  months ended June 30, 1997.  The  extraordinary
     item related to SPX's purchase of 11 3/4% senior subordinated notes.

(d)  These pro forma  adjustments  reflect the impact of the  allocation of
     the  purchase  price to the assets and  liabilities  of SPX on the pro
     forma  combined  statement  of income and other  financial  data.  The
     ultimate  allocation of the purchase price to the net assets acquired,
     goodwill  and  other  intangible  assets,   liabilities   assumed  and
     incomplete  technology  of SPX is  subject to final  determination  of
     their respective fair values, and as a result, these adjustments could
     change. The following table reflects the pro forma statement of income
     impact of the purchase accounting adjustments:

                                    Cost of    Selling,   Other
                                    products   general    operating
                                    sold       & admin.   expenses    Total
                                    --------   --------   ---------   -------
    Additional depreciation         $   2.5    $    2.5   $       -    $  5.0
    Pension expense adjustment           0.3        0.3                   0.6
    Amortization of previously 
     recorded goodwill                     -          -        (3.0)     (3.0)
    Goodwill and intangible
     amortization on
     transaction                           -          -        24.6      24.6
    Postretirement expense
     adjustment                          0.5        0.5           -       1.0
                                    --------   --------   ---------   -------
    Year ended August 31, 1997      $    3.3   $    3.3   $    21.6   $  28.2
                                    ========   ========   =========   =======

    Three months ended
     November 30, 1997              $    0.8   $    0.8   $     5.4   $   7.0
                                    ========   ========   =========   =======

     Upon  consummation of the  transaction,  an estimated $10.0 charge for
     incomplete   technology  will  occur,  however,  this  charge  is  not
     reflected in the pro forma data as the charge is non-recurring and has
     no continuing impact.

(e)  This pro forma adjustment reflects the borrowings for the cash portion
     of the transaction,  debt issuance costs for new financing,  and other
     estimated   transaction  fees  of  $15.0.  The  cash  portion  of  the
     transaction  is  $768.9,  which  represents  $12.00  per  share of the
     Company's stock multiplied by 64.077 million the Company's outstanding
     shares and equivalents.  The outstanding and equivalent  shares of the
     Company include the Company's  outstanding  shares at November 5, 1997
     and shares  issuable  (treasury  stock  method)  upon  exercise of the
     Company's  options.  The debt issuance costs are estimated at $37.5 to
     obtain a new seven year $2,400 financing to effect the transaction, to
     refinance  existing  debt of both  SPX and  the  Company  and  provide
     working capital.

(f)  These pro forma  adjustments  reflect the interest expense  associated
     with the incremental borrowings to effect this transaction,  as if the
     incremental  borrowings  had occurred at  September  1, 1996.  The pro
     forma interest  expense  adjustment  also reflects the  refinancing of
     existing debt with the new seven year $2,400 financing as of September
     1, 1996. The interest  expense has been computed on an assumption that
     the new credit  facility  will bear interest at a rate of LIBOR plus 2
     1/4% (8% was used in these pro forma  financial  statements)  and that
     debt issuance costs are amortized over seven years.

(g)  These adjustments represent the estimated income tax effect of the pro
     forma  adjustments,  excluding  goodwill  expense,  which  will not be
     deductible  for tax  purposes,  using an effective  income tax rate of
     38%.

(h)  These pro forma  adjustments  reflect the  additional SPX shares to be
     issued in the  transaction.  The  additional  shares to be issued  are
     calculated using an Exchange Ratio of 0.4796,  which converts weighted
     average   outstanding  shares  of  the  Company  to  weighted  average
     outstanding  shares of SPX. The outstanding  and equivalent  shares of
     the  Company  include  the  Company's  outstanding  shares  and shares
     issuable  (treasury  stock  method)  upon  exercise  of the  Company's
     options.

(i)  These pro forma  adjustments  reflect the  allocation  of the purchase
     price to the assets and  liabilities of SPX. The purchase price of SPX
     is assumed to be the market value of SPX (12.561 outstanding shares at
     $75-1/16 per share and the fair value of SPX's  options  outstanding).
     The excess  purchase price to be allocated  represents the fair market
     value of SPX,  less the  September  30, 1997 book equity value of SPX.
     The  September  30, 1997 book equity  value of SPX was also reduced by
     estimated   transaction  fees  of  $15  for  investment  banker  fees,
     accounting and legal fees, and other transaction costs assumed to have
     been incurred by SPX prior to the combination.

    SPX shares outstanding                      12.561
    Market price per share                    $75.0625
                                              --------
    Market value of outstanding shares        $  942.9
    Fair value of SPX outstanding options         94.5
                                              --------
    Market value of SPX                       $1,037.4
    SPX September 30, 1997 book value             14.6
    Transaction fees                             (15.0)
                                              --------
    Excess purchase price to be allocated     $1,037.8
                                              ========

     This total has been allocated to the assets and liabilities of SPX
     as follows:

    Inventory - to reflect the estimated      
    adjustment for fair market value          $   12.0
    Property, plant and equipment - to                
    reflect the estimated adjustment to fair      
    market value                                  40.0
    Other assets- to adjust prepaid pension           
    to the fair market value of plan assets       
    less the projected benefit obligation         87.3
    Other assets - to eliminate deferred
    financing fees                                (0.8)
    Goodwill - to eliminate previously           
    recorded goodwill                            (60.7)
    Goodwill and intangible assets - to          
    record goodwill and intangibles
    resulting from the transaction               985.9
    Incomplete technology                         10.0
    Long-term liabilities - to adjust             
    Postretirement health and life insurance
    liability to the accumulated
    postretirement benefit obligation             19.4
    Long-term liabilities - to record            
    deferred tax liability related to the
    above allocations                            (55.3)
                                              --------
    Total                                     $1,037.8
                                              ========

     The  ultimate  allocation  of the  purchase  price  to the net  assets
     acquired,  goodwill, other intangible assets,  liabilities assumed and
     incomplete  technology  is  subject  to final  determination  of their
     respective  fair  values.  As of  November  30,  1997,  there  were no
     intercorporate transactions that required elimination.

(j)  These pro forma adjustments  reflect the effect of reverse acquisition
     accounting by increasing  the  Company's  shareholders'  equity by the
     excess market value of SPX  ($1,037.4),  less SPX's September 30, 1997
     book value (14.6),  and  subtracting the cash payout ($768.9) which is
     treated as a dividend by the combined company.

(k)  Reflects a reclassification  of $6.5 of legal costs to Special charges
     that were  previously  classified  as other expense  (income),  net in
     SPX's  Quarterly  Report  on Form  10-Q  for  the  nine  months  ended
     September 30, 1997.

(l)  During  the  year  ended  August  31,  1997,   the  Company   recorded
     repositioning  and other special charges  totaling  $254.1.  Also, the
     Company  recorded a $28.6 gain on the sale of two  businesses.  During
     the year ended  August 31,  1997,  SPX  recorded a $7.4  restructuring
     charge,  $6.5 of legal costs and a $67.8  write-off of  goodwill.  For
     purposes  of this  presentation,  these  charges  and gains  have been
     classified as special charges and gains.

(m)  Excluding   special  charges  and  gains,   pro  forma  income  before
     extraordinary  item would have been $69.5,  or $1.56 per share for the
     year ended August 31, 1997. Additionally, SPX management believes that
     the  combined  entity can  achieve  approximately  $125 of  annualized
     expense  savings,  which  have not  been  reflected  in the pro  forma
     results. If such savings were assumed to be achieved, pro forma income
     before  extraordinary  item and  special  charges and gains would have
     been $42.7, or $0.99 per share,  and $147.0,  or $3.29 per share,  for
     the three months ended November 30, 1997 and for the year ended August
     31, 1997, respectively.

(n)  Represents the historical quarterly cash dividend per share of SPX for
     the periods presented.  In April of 1997, SPX eliminated its quarterly
     cash dividend and stated that future share  repurchases would be used,
     when appropriate, for distributions to shareholders.

(o)  EBITDA  represents  operating  income (loss) before  special  charges,
     depreciation  and  amortization.  EBITDA is not presented herein as an
     alternative  measure of  operating  results,  cash flow (as defined by
     generally  accepted  accounting  principles) or liquidity and does not
     necessarily  represent the cash available to fund cash requirements of
     the combined  company.  EBITDA is instead  included  because it is one
     measure  used by certain  investors  as an  indicator  of a  company's
     operating performance and its ability to service indebtedness.



            PRO FORMA ADJUSTED HISTORICAL FINANCIAL DATA OF SPX
                                (unaudited)
                    (in millions, except per share data)

PRO FORMA BASIS OF PRESENTATION AND ADJUSTMENTS

     On February 7, 1997,  SPX completed the sale of  substantially  all of
the assets and rights used in the  manufacture  and  distribution of piston
rings and cylinder liners,  known as the Sealed Power division ("SPD"). The
gross cash sales proceeds were $223.  Additionally,  effective  November 1,
1996,  SPX  sold its  Hy-Lift  division  to W.A.  Thomas  Company.  Hy-Lift
manufactures  and  distributes  engine valve train  components  to both the
original  equipment  market  and the  aftermarket.  The  gross  cash  sales
proceeds were $15.

     The  following  historical  financial  data include the results of SPD
through  February 7, 1997, and the results of Hy-Lift  through  November 1,
1996,  their  dates of  disposition.  The  following  unaudited  pro  forma
adjusted  historical  financial  data for the twelve  months ended June 30,
1997 reflects the disposition of these divisions as if they had occurred as
of July 1, 1996. The pro forma adjusted historical  financial data does not
purport to represent  what SPX's  results of  continuing  operations  would
actually  have been had the  transactions  in fact  occurred  as of July 1,
1996, or project the results for any future period.

     This pro forma  adjusted  historical  financial data should be read in
conjunction  with the financial  statements  and notes thereto  included in
SPX's 1996 Form 10-K,  SPX's Current  Report on Form 8-K filed February 21,
1997,  and SPX's  Quarterly  Report on Form 10-Q for the nine months  ended
September 30, 1997.



            PRO FORMA ADJUSTED HISTORICAL FINANCIAL DATA OF SPX
                      FOR THE YEAR ENDED JUNE 30, 1997
                                (unaudited)
                    (in millions, except per share data)

                                             Pro forma Adj.
                                             --------------
                              Historical   Divest(a)    Other      Pro forma
                              ----------   ---------    -----      ---------
Statement of income data: 
- -------------------------
Revenues                      $  973.4     $  (148.0)              $   825.4
Cost of products sold            726.2        (130.5)                  595.7
Selling, general & admin.        176.8          (8.1)                  168.7
Other operating expenses, net      2.7           1.2                     3.9
Special charges (e)               81.7             -                    81.7
                              --------     ---------               ---------
Operating income              $  (14.0)    $   (10.6)              $   (24.6)
Other (income) expense           (74.2)            -    (71.9)(b)       (2.3)
Interest expense, net             22.1             -      4.3 (c)       17.8
                              --------     ---------   ------      ---------
Income before income taxes    $   38.1     $   (10.6)  $(67.6)     $   (40.1)

Provision for income taxes        53.4          (3.8)   (39.2)(d)       10.4
                              --------     ---------   ------      ---------
Income (f)                    $  (15.3)    $    (6.8)  $(28.4)     $   (50.5)
                              ========     =========   ======      =========

Primary income per share      $  (1.08)                            $   (3.56)
Weighted average number
 of shares                      14.196                                14.196
Pro forma income per share
 under FAS 128:
  Basic                       $  (1.11)                            $   (3.65)
  Diluted                     $  (1.08)                            $   (3.56)

Other financial data:
- ---------------------
EBITDA (g)                    $  100.3     $   (18.2)              $    82.1
Capital expenditures              23.0          (5.5)                   17.5
Depreciation and amortization     32.6          (7.6)                   25.0

(a)  These columns reflect the operating results of SPD and Hy-Lift through
     their dates of  disposition,  February  7, 1997 and  November 1, 1996,
     respectively.

(b)  Adjustment  to exclude the gain on the sale of SPD.  SPX's loss on the
     sale of Hy-Lift was immaterial.

(c)  Adjustment to interest expense,  net, assuming the use of net proceeds
     to reduce revolving credit and other debt.

(d)  Adjustment  to income tax  expense  to  reflect  the tax effect of the
     adjustments.

(e)  Reflects a reclassification  of $6.5 of legal costs to Special charges
     that were  previously  classified  as other expense  (income),  net in
     SPX's  Quarterly  Report  on Form  10-Q  for  the  nine  months  ended
     September 30, 1997.

(f)  Income excludes extraordinary item of $16.4, net of taxes.

(g)  EBITDA  represents  operating  income (loss) before  special  charges,
     depreciation  and  amortization.  EBITDA is not presented herein as an
     alternative  measure of  operating  results,  cash flow (as defined by
     generally  accepted  accounting  principles) or liquidity and does not
     necessarily  represent the cash available to fund cash requirements of
     the combined  company.  EBITDA is instead  included  because it is one
     measure  used by certain  investors  as an  indicator  of a  company's
     operating performance and its ability to service indebtedness.


                        VALIDITY OF SPX COMMON STOCK

     The validity of the shares of SPX Common Stock offered  hereby will be
passed  upon  for SPX by  Fried,  Frank,  Harris,  Shriver  &  Jacobson  (a
partnership including professional  corporations),  One New York Plaza, New
York, New York 10004.

                                  EXPERTS

     The audited  consolidated  financial statements included in SPX's 1996
Form 10-K  incorporated  by reference in this  preliminary  Prospectus  and
elsewhere  in the  Registration  Statement  have  been  audited  by  Arthur
Andersen LLP, independent public accountants, as indicated in their reports
with  respect  thereto,  and are  included  herein  in  reliance  upon  the
authority of said firm as experts in giving said reports.

     Manually signed  facsimile copies of the Letter of Transmittal will be
accepted. The Letter of Transmittal, certificates for Shares and Rights and
any other required  documents should be sent or delivered by each holder of
Shares or his  broker,  dealer,  commercial  bank,  trust  company or other
nominee to the Exchange Agent at one of its addresses set forth below.

                       THE EXCHANGE AGENT
                       ------------------
                        TELEPHONE NUMBER
                            [     ]
                         (call collect)
By Mail:             Facsimile Transmission      By Hand or Overnight Courier:
[          ]              Copy Numbers:                   [          ]
                            [     ]
                            [     ]
                 Confirm Facsimile by Telephone:
                            [     ]
                            [     ]

     Any  questions  or  requests  for  assistance  may be  directed to the
Information  Agent or the  Dealer  Manager  at their  respective  telephone
numbers and locations listed below.  Any requests for additional  copies of
this  Prospectus,  the Letter of  Transmittal  and the Notice of Guaranteed
Delivery  may be directed to the  Information  Agent.  You may also contact
your local broker, commercial bank, trust company or nominee for assistance
concerning the Offer.

                  THE INFORMATION AGENT FOR THE OFFER IS:

                           D.F. King & Co., Inc.
                              77 Water Street
                          New York, New York 10005

               Bankers and brokers call collect: 212-269-5550
                         All others call toll free:
                                800-758-5378

                    THE DEALER MANAGER FOR THE OFFER IS:

                           CIBC Oppenheimer Corp.
                              200 West Madison
                                Suite #2300
                             Chicago, IL 60606
                               (312) 750-8749


                                  PART II

                   INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

     Section 145 of the Delaware  General  Corporation  Law  authorized and
empowers SPX to indemnify the directors,  officers, employees and agents of
SPX against  liabilities  incurred in connection with, and related expenses
resulting  from, any claim,  action or suit brought against any such person
as a result of his relationship  with SPX, provided that such persons acted
in good faith and in a manner such person reasonably believed to be in, and
not opposed to, the best  interests of SPX in  connection  with the acts or
events on which such claim,  action or suit is based. The finding of either
civil or criminal  liability on the part of such persons in connection with
such acts or events is not  necessarily  determinative  of the  question of
whether such  persons  have met the  required  standard of conduct and are,
accordingly,  entitled to be  indemnified.  The  foregoing  statements  are
subject  to  the  detailed   provisions  of  Section  145  of  the  General
Corporation Law of the State of Delaware.

     SPX's  Certificate  of  Incorporation   provides  that  directors  and
officers  of SPX and those  serving at the  request  of SPX as a  director,
officer,  employee  or agent  of  another  corporation  or  entity  will be
indemnified  by SPX to the fullest  extent  authorized by Delaware law. The
indemnification  right  includes  the right to be paid by SPX the  expenses
incurred in defending any  proceeding in advance of its final  disposition.
The indemnification  rights conferred by SPX's Certificate of Incorporation
are  not   exclusive   of  any  other  right  to  which   persons   seeking
indemnification  may be entitled under any law, bylaw,  agreement,  vote of
stockholders or disinterested directors or otherwise.  SPX is authorized to
purchase and maintain insurance on behalf of its directors and officers.

ITEM 21.  EXHIBITS.

          ITEM NO.                                   DESCRIPTION
          --------                                   -----------

          2         Acquisition Agreement between the Registrant and Riken
                    Corporation, incorporated herein from SPX's Annual
                    Report of Form 10-K, file No. 1-6948, for the year
                    ended December 31, 1993.

          3(i)      Restated Certificate of Incorporation, incorporated
                    herein by reference from the Registrant's Annual Report
                    on Form 10-K, file No. 1-6948, for the year ended
                    December 31, 1987.

          (ii)      Certificate of Ownership and Merger dated April 25,
                    1988, incorporated herein by reference from the
                    Registrant's Annual Report on Form 10-K, file No.
                    1-6948, for the year ended December 31, 1988.

          (iii)     By-Laws as amended through October 25, 1995,
                    incorporated herein by reference from the Registrant's
                    Quarterly Report on Form 10-Q, file No. 1-6948, for the
                    quarter ended September 30, 1995.

          4(i)      Credit Agreement between SPX and The First National
                    Bank of Chicago, as agent for the banks named therein,
                    dated as of March 24, 1994, incorporated herein by
                    reference from the Registrant's Annual Report on Form
                    10-K, file No. 1-6948, for the year ended December 31,
                    1993.

          (ii)      11 3/4% Senior Subordinated Notes due 2002,
                    incorporated herein by reference from the Registrant's
                    Amendment No. 2 to Form S-3 Registration Statement
                    33-52833, filed on May 27, 1994.

          (iii)     Indenture, dated as of June 6, 1994, between the the
                    Registrant and The Bank of New York, as trustee,
                    relating to the 11 3/4% Senior Subordinated Notes due
                    2002, incorporated herein by reference from the
                    Registrant's Amendment No. 2 to Form S-3 Registration
                    Statement 33-52833, filed on May 27, 1994.

          (iv)      Waiver and amendment No. 1 to Credit Agreement between
                    the Registrant and The First National Bank of Chicago,
                    as agent for the banks named therein, dated as of June
                    3, 1994, incorporated herein by reference from the
                    Registrant's Quarterly Report on Form 10-Q, file No.
                    1-6948, for the quarter ended March 31, 1995.

          (v)       Waiver and amendment No. 2 to Credit Agreement between
                    the Registrant and The First National Bank of Chicago,
                    as agent for the banks named therein, dated as of April
                    20, 1995, incorporated herein by reference from the
                    Registrant's Quarterly Report on Form 10-Q, file No.
                    1-6948, for the quarter ended March 31, 1995.

          (vi)      Waiver and amendment No. 3 to Credit Agreement between
                    the Registrant and The First National Bank of Chicago,
                    as agent for the banks named therein, dated as of
                    December 12, 1995, incorporated herein by reference
                    from the Registrant's Annual Report on Form 10-K, file
                    No. 1-6948, for the year ended December 31, 1995.

          (vii)     Waiver and amendment No. 4 to Credit Agreement between
                    the Registrant and The First National Bank of Chicago,
                    as agent for the banks named therein, dated as of
                    February 28, 1996, incorporated herein by reference
                    from the Registrant's Annual Report on Form 10-K, file
                    No. 1-6948, for the year ended December 31, 1995.

          (viii)    Waiver and amendment No. 5 to Credit Agreement between
                    the Registrant and The First National Bank of Chicago,
                    as agent for the banks named therein, dated as of March
                    24, 1996, incorporated herein by reference from the
                    Registrant's Quarterly Report on Form 10-Q, file No.
                    1-6948, for the quarter ended March 31, 1996.

          (ix)      Waiver and amendment No. 6 to Credit Agreement between
                    the Registrant and The First National Bank of Chicago,
                    as agent for the banks named therein, dated as of
                    September 20, 1996, incorporated herein by reference
                    from the Registrant's Quarterly Report on Form 10-Q,
                    file No. 1-6948, for the quarter ended September 30,
                    1996.

          (x)       Waiver and amendment No. 7 to Credit Agreement between
                    the Registrant and The First National Bank of Chicago,
                    as agent for the banks named therein, dated as of
                    December 31, 1996, incorporated herein by reference to
                    the Registrant's Annual Report on Form 10-K, file No.
                    1-6948, for the year ended December 31, 1996.

          (xi)      Waiver and amendment No. 8 to Credit Agreement between
                    the Registrant and The First National Bank of Chicago,
                    as agent for the banks named therein, dated as of
                    February 24, 1997, incorporated herein by reference to
                    the Registrant's Annual Report on Form 10-K, file No.
                    1-6948, for the year ended December 31, 1996.

          (xii)     Rights Agreement, dated as of June 25, 1996 between the
                    Registrant and The Bank of New York, as Rights Agent,
                    relating to Rights to purchase preferred stock under
                    certain circumstances, incorporated herein by reference
                    from the Registrant's Registration Statement on Form
                    8-A filed on June 26, 1996.

          (xiii)    Amendment No. 1 to Rights Agreement, effective October
                    22, 1997, between SPX and the Bank of New York,
                    incorporated herein by reference from SPX's
                    Registration Statement on Form 8-A filed on January 9,
                    1998.

          (xiv)     Credit Agreement between SPX Corporation and The First
                    National Bank of Chicago, as agent for the banks named
                    therein, dated as of May 7, 1997, incorporated herein
                    by reference from SPX's Quarterly Report on Form 10-Q,
                    file No. 1-6948, for the quarter ended March 31, 1997.

          5         Opinion of Fried, Frank, Harris, Shriver & Jacobson as
                    to the legality of the shares of common stock being
                    offered.*

          10(i)     Sealed Power Corporation Executive Performance Unit
                    Plan, incorporated herein by reference from SPX's
                    Amendment No. 1 on Form 8 to the Annual Report on Form
                    10-K, file No. 1-6948, for the year ended December 31,
                    1988. 

          (ii)      SPX Corporation Retirement Plan for Directors, as
                    amended and restated, incorporated herein by reference
                    from SPX's Amendment No. 1 on Form 8 to the Annual
                    Report on Form 10-K, file No. 1-6948, for the year
                    ended December 31, 1988. 

          (iii)     SPX Corporation Supplemental Retirement Plan for Top
                    Management, as amended and restated, incorporated
                    herein by reference from SPX's Amendment No. 1 on Form
                    8 to the Annual Report on Form 10-K, file No. 1-6948,
                    for the year ended December 31, 1988. 

          (iv)      SPX Corporation Excess Benefit Plan No. 3, as amended
                    and restated, incorporated herein by reference from
                    SPX's Amendment No. 1 on Form 8 to the Annual Report on
                    Form 10-K, file No. 1-6948, for the year ended December
                    31, 1988. 

          (v)       SPX Corporation Executive Severance Agreement,
                    incorporated herein by reference from SPX's Amendment
                    No. 1 on Form 8 to the Annual Report on Form 10-K, file
                    No. 1-6948, for the year ended December 31, 1988. 

          (vi)      SPX Corporation Trust Agreement for Supplemental
                    Retirement Plan for Top Management, Excess Benefit Plan
                    No. 3, and Retirement Plan for Directors, incorporated
                    herein by reference from SPX's Amendment No. 1 on Form
                    8 to the Annual Report on Form 10-K, file No. 1-6948,
                    for the year ended December 31, 1988. 

          (vii)     SPX Corporation Trust Agreement for Participants in
                    Executive Severance Agreements, Special Separation Pay
                    Plan for Corporate Staff Executive Personnel Agreements
                    and Special Separation Pay Plan for Corporate Staff
                    Management and Administrative Personnel Agreements,
                    incorporated herein by reference from SPX's Amendment
                    No. 1 on Form 8 to the Annual Report on Form 10-K, file
                    No. 1-6948, for the year ended December 31, 1988.


          (viii)    SPX Corporation Stock Compensation Plan Limited Stock
                    Appreciation Rights Award, incorporated herein by
                    reference from SPX's Amendment No. 1 on Form 8 to the
                    Annual Report on Form 10-K, file No. 1-6948, for the
                    year ended December 31, 1988. 

          (ix)      SPX Corporation Stock Ownership Plan, incorporated
                    herein by reference from SPX's Current Report on Form
                    8-K, file No. 1-6948, filed on July 26, 1989. 

          (x)       SPX Corporation Stock Ownership Trust, incorporated
                    herein by reference from SPX's Current Report on Form
                    8-K, file No. 1-6948, filed on July 26, 1989. 

          (xi)      SPX Corporation 1992 Stock Compensation Plan,
                    incorporated herein by reference from Exhibit
                    10(iii)(n) to SPX's Annual Report on Form 10-K, file
                    No. 1-6948, for the year ended December 31, 1992. 

          (xii)     SPX Corporation Supplemental Employee Stock Ownership
                    Plan, incorporated herein by reference from SPX's
                    Annual Report on Form 10-K, file No. 1-6948, for the
                    year ended December 31, 1990. 

          (xiii)    Sealed Power Technologies L.P. Retirement Fund,
                    incorporated herein by reference from Exhibit 10(viii)
                    to SPT's and SPT Corp.'s Annual Report on Form 10-K,
                    file No. 33-27994, for the year ended December 31,
                    1989. 

          (xiv)     Sealed Power Technologies L.P. Pension Plan No. 302,
                    incorporated herein by reference from Exhibit 4(ix) to
                    SPT's and SPT Corp.'s Annual Report on Form 10-K, file
                    No. 33-27994, for the year ended December 31, 1989.

          (xv)      Employment agreement, and related Nonqualified Stock
                    Option Agreement and Restricted Shares Agreement,
                    between SPX Corporation and John B. Blystone dated as
                    of November 24, 19__, incorporated herein by reference
                    to SPX's Annual Report on Form 10-K, file No. 1-6948,
                    for the year ended December 31, 1995. 

          (xvi)     Employment agreement between SPX Corporation and John
                    B. Blystone dated as of January 1, 1997, incorporated
                    herein by reference to SPX's Annual Report on Form
                    10-K, file No. 1-6948, for the year ended December 31,
                    1996. 

          21        Subsidiaries incorporated herein by reference to SPX's
                    Annual Report on Form 10-K, file No. 1-6948, for the
                    year ended December 31, 1996. 

          23(i)     Consent of Arthur Andersen LLP.

          (ii)      Consents of Fried, Frank, Harris, Shriver & Jacobson.*

          24        Powers of Attorney. 

          99(i)     Form of Letter of Transmittal and Instructions
                    thereto.* 

          99(ii)    Form of Notice of Guaranteed Delivery.*

          99(iii)   Form of Broker Dealer Letter.* 

          99(iv)    Form of Letter to Clients.* 

          99(v)     Form of Guidelines for Certification of Taxpayer
                    Identification Number on Substitute Form W-9.* 

          99(vi)    SPX Management Presentation to Shareholders.

          99(vii)   Form of Summary Advertisement.* 

*    To be filed by amendment to this Registration Statement.

ITEM 22.  UNDERTAKINGS

     The undersigned  Registrant hereby undertakes that, for the purpose 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 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  is  required  to be
presented  by  Article  3 of  Regulations  S-X  is  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 to provide such interim  financial
information.

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

     The undersigned  registrant  hereby  undertakes to respond to requests
for  information  that is  incorporated  by reference  into the  prospectus
pursuant to Items 4, 10(b),  11 or 13 of this Form within one  business day
of receipt of such request, and to send the incorporated documents by first
class  mail or  other  equally  prompt  means.  This  includes  information
contained  in  documents  filed  subsequent  to the  effective  date of the
registration statement through the date of responding to the request.

     The undersigned  registrant  hereby undertakes to supply by means of a
post-effective amendment all information concerning a transaction,  and the
company being acquired  involved  therein,  that was not the subject of and
included in the registration statement when it became effective.


                                 SIGNATURES

     PURSUANT  TO THE  REQUIREMENTS  OF THE  SECURITIES  ACT OF  1933,  THE
REGISTRANT HAS DULY CAUSED THIS REGISTRATION  STATEMENT TO BE SIGNED ON ITS
BEHALF BY THE UNDERSIGNED,  THEREUNTO DULY  AUTHORIZED,  IN THE CITY OF NEW
YORK, STATE OF NEW YORK ON THIS 17th DAY OF FEBRUARY, 1998.

                                        SPX Corporation

                                        By:    /s/ Christopher J. Kearney
                                           -------------------------------
                                             Christopher J. Kearney
                                             Vice President, Secretary and
                                             General Counsel

     PURSUANT  TO THE  REQUIREMENTS  OF THE  SECURITIES  ACT OF 1933,  THIS
REGISTRATION  STATEMENT  HAS BEEN  SIGNED  BY THE  FOLLOWING  PERSONS  (WHO
INCLUDE ALL MEMBERS OF THE BOARD OF DIRECTORS) IN THE CAPACITIES AND ON THE
DATE INDICATED.

       SIGNATURE                        TITLE                            DATE
       ---------                        -----                            ----

           *                Director                       February 17th, 1998
- ------------------------                                            
           *                Director                       February 17th, 1998
- ------------------------                                            
           *                Chairman, President and        February 17th, 1998
- ------------------------    Chief Executive Officer                 
                            and Director

           *                Director                       February 17th,1998
- ------------------------                                            
           *                Director                       February 17th, 1998
- ------------------------                                            
           *                Director                       February 17th , 1998
- ------------------------                                            
           *                Director                       February 17th , 1998
- ------------------------                                            
           *                Director                       February 17th, 1998
- ------------------------                                            
           *                Director                       February 17th, 1998
- ------------------------                                            
           *                Patrick J. O'Leary             February 17th, 1998
- ------------------------    (Prinicipal Financial
                            Officer)

           *                Kenneth C. Dow                 February 17th, 1998
- ------------------------    (Principal Accounting                           
                            Officer)


*By   /S/ Christopher J. Kearney
   -----------------------------
         Christopher J. Kearney
          AS ATTORNEY-IN-FACT

                                                              Exhibit 23(i)



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


As independent public  accountants,  we hereby consent to the incorporation
by reference in this registration statement of our report dated February 7,
1997,  included in SPX Corporation's  Form 10-K for the year ended December
31, 1996, and to all  references to our Firm included in this  registration
statement.





                                          Arthur Andersen LLP

Chicago, Illinois
February 17, 1998

                                                            Exhibit 24

                             POWER OF ATTORNEY


      KNOW ALL MEN BY THESE  PRESENTS  THAT the  undersigned  directors and
officers of SPX Corporation,  a Delaware  corporation  (the "Company"),  do
hereby constitute and appoint Christopher J. Kearney and Patrick J. O'Leary
his or her true and lawful  attorney  and  agent,  each with full power and
authority  (acting  alone and without the other) to execute in the name and
on  behalf  of  the  undersigned  as  such  Director   and/or  Officer,   a
Registration  Statement on Form S-4 under the  Securities  Act of 1933,  as
amended, with respect to the registration of shares of the Company's Common
Stock that may be issued in connection  with the proposed offer to exchange
shares  of  Echlin,  Inc.  for cash and  shares of SPX  Corporation  and to
execute any and all  amendments  to such  Registration  Statement,  whether
filed prior or subsequent to the time such  Registration  Statement becomes
effective.  The  undersigned  hereby grants unto such attorneys and agents,
and each of them, full power of substitution and revocation in the premises
and hereby  ratifies and confirms all that such attorneys and agents may do
or cause to be done by virtue of these presents.

               Signature                               Capacity
               ---------                               --------


       /s/ John B. Blystone             Chairman, President, Chief Executive
- ----------------------------------      Officer and Director
           John B. Blystone             


      /s/ Patrick J. O'Leary            Vice President - Finance, Treasurer and
- ----------------------------------      Chief Financial Officer
          Patrick J. O'Leary            


            /s/ Ken Dow                 Controller
- ----------------------------------      
                Ken Dow


      /s/ J. Kermit Campbell            Director
- ----------------------------------      
          J. Kermit Campbell


        /s/ Sarah R. Coffin             Director
- ----------------------------------      
            Sarah R. Coffin


        /s/ Frank A. Ehmann             Director
- ----------------------------------      
            Frank A. Ehmann


       /s/ Edward D. Hopkins            Director
- ----------------------------------      
           Edward D. Hopkins


    /s/ Charles E. Johnson, II          Director
- ----------------------------------      
        Charles E. Johnson, II


       /s/ Ronald L. Kerber             Director
- ----------------------------------      
           Ronald L. Kerber


        /s/ Peter H. Merlin             Director
- ----------------------------------      
            Peter H. Merlin


       /s/ David P. Williams            Director
- ----------------------------------      
           David P. Williams


Dated:  February 6, 1998

<PAGE>
                              SPX Corporation



                             February 17, 1998
<PAGE>
                               TODAY'S AGENDA
                               --------------




     .    Discuss 4Q and 1997 year end results and provide '98 guidance

     .    Discuss our offer for Echlin

          -    Industry trends

          -    Strategic rationale

          -    Financial logic

          -    Our track record

          -    Our program for Echlin
<PAGE>
                       SPX EARNINGS PER SHARE UPDATE
                       -----------------------------




EPS (diluted) before unusual items

     -    Fourth Quarter = $0.83

          .    159% improvement over 1996

          .    First Call Consensus $0.80

     -    Full Year 1997 = $3.01

          .    71% improvement over '96

          .    First Call Consensus $2.99




                      OUT-PERFORMED ANALYST ESTIMATES
<PAGE>
                       SPX 1997 PERFORMANCE SCORECARD
                       ------------------------------






 .  E.P.S.                 $3.01 per share       71% improvement over '96

 .  EVA(R)Improvement      $18.8 million         $45 million over two years

 .  MVA                    Nearly $400 million   $700+ million over two years

 .  Headcount              36% fewer people      Sales per employee up 30% 
                                                  over '96

 .  Operating Margin       8%                    25% improvement over '96

 .  Revenue                +7%                   Past several years flat

 .  Shareholder Actions    Dutch Auction         Repurchased 17% in '97










                      EXCEEDING FINANCIAL COMMITMENTS
<PAGE>
                            SPX GUIDANCE - 1998
                            -------------------






 .   1998 Revenue Growth guidance -- 10%
      (over 1997 Pro Forma)

 .   1998 Q1 EPS Guidance -- $0.80

 .   1998 FY EPS Guidance -- $3.85 -- $4.00





                DOUBLE-DIGIT GROWTH AND 30% EPS IMPROVEMENT
<PAGE>
                               SPX AND ECHLIN
<PAGE>
                    RATIONALE FOR SPX AND ECHLIN MERGER
                    -----------------------------------




 .    Vehicle service industry is rapidly evolving

 .    Combination benefits shareholders, customers and employees of SPX and
     Echlin

 .    SPX's leadership experience and management techniques will be applied
     to Echlin

 .    SPX will cut costs, improve profitability and position combined
     company for growth
<PAGE>
                            WHY THIS OFFER NOW?
                            -------------------






 .    SPX has been pursuing a strategic business combination with Echlin for
     a year

 .    SPX has initiated three meetings with Echlin and has sent several
     letters regarding proposed deal

 .    Echlin has repeatedly rebuffed our offer to negotiate a transaction --
     Echlin Board refuses to meet with us

 .    Rapid industry consolidation and strategic rationale for transaction
     make it necessary to take our offer directly to Echlin's shareholders
<PAGE>
                           SUMMARY OF SPX's OFFER
                           ----------------------






 .    Structure:  Exchange offer for all Echlin shares

 .    Value:      $48 per Echlin share or approximately $3 billion

 .    Terms:      $12 in cash, 0.4796 SPX shares per Echlin share; 1/4 cash, 3/4
                 stock; fixed exchange ratio

 .    Premium:    23% over Echlin's close on Friday
                 32% above 30-day average

 .    Earnings:   Expect substantial accretion in first full year
<PAGE>
                   SPX POSITIONED TO COMPLETE TRANSACTION
                   --------------------------------------






 .    SPX owns 1.15 million Echlin shares, 1.8% of Echlin, and more than
     combined ownership of Echlin's officers and directors

 .    SPX has received antitrust clearance for the transaction

 .    SPX has received "highly confident" letter for $2.4 billion of
     financing from CIBC

 .    SPX has filed exchange offer materials with SEC

 .    SPX has filed materials with SEC to call special meeting of Echlin's
     shareholders to replace the Echlin Board
<PAGE>
                           ANTICIPATED TIMETABLE
                           ---------------------






 February 1998                       March 1998                    June 1998

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

Solicitation             [arrow]   Collect            [arrow]    Special
to Call                            Demands from                  Meeting to
Special                            35% of Echlin                 Remove Echlin
Meeting                            Shareholders                  Board and
                                   for a Special                 Replace with
                                   Meeting                       SPX Slate

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

Governance                                                       Governance
Requirement:                                                     Requirement:

35% of                                                           Removal:  More
  Outstanding                                                      Votes For
  Shares                                                           Than Against
                        

                                                                 Election:  
                                                                   Plurality of
                                                                   Votes Cast






         PROCESS COULD BE ACCELERATED WITH A NEGOTIATED TRANSACTION
<PAGE>
                         RAPIDLY CHANGING INDUSTRY
                         -------------------------






 .    Consolidation in $350 billion vehicle service industry

 .    Blurring lines between OE and aftermarket

 .    Expansion of mega-dealerships and national parts retailers

 .    Growing importance of repair shop chains

 .    Increasing technological complexity of vehicles

 .    Integration of the vehicle service process necessary to compete and
     better serve customers in the future

 .    SPX and Echlin will have scale and capabilities to excel
<PAGE>
                TRENDS TRANSFORMING VEHICLE SERVICE INDUSTRY
                --------------------------------------------






         TRENDS                                              IMPACT
- --------------------------                          --------------------------
                                          
 .  Aftermarket demand model       [arrow]           .  Restructuring within
   predicts slowing growth                             industry required
                                   
 .  Weak demand creates                                 - Plant rationalization
   operational problems
      
 .  DIY demand will continue                            - Downsize distribution
   to weaken                                             networks

                                                       - Write-off inventories

                                                    .  Consolidation of players
                                                       required

                                                       - OE/Aftermarket lines
                                                         blurring

                                                       - Economies of scale in
                                                         distribution and
                                                         manufacturing

                                                       - Integration of vehicle
                                                         service lifecycle






                     AUTO AFTERMARKET GROWTH IS SLOWING
            INDUSTRY RESTRUCTURING AND CONSOLIDATION IS REQUIRED
<PAGE>
                         VEHICLE SERVICE LIFECYCLE
                         -------------------------






                  [CHART DESCRIBING BUSINESS SEGMENTS
               AT DIFFERENT POINTS IN VEHICLE LIFECYCLE]







                  INTEGRATION OF VEHICLE SERVICE LIFECYCLE
                     IS CRITICAL FOR LONG-TERM SUCCESS
<PAGE>
                   INTEGRATION OF VEHICLE SERVICE PROCESS
                   --------------------------------------






                         VEHICLE SERVICE LIFECYCLE



             [CHART DESCRIBING VEHICLE SERVICE LIFECYCLE]







            FEEDBACK OF DATA DRIVES IMPROVED SERVICE AND QUALITY
              FOR CUSTOMERS/DISTRIBUTORS, OEM'S AND END-USERS
<PAGE>
                            SHAREHOLDER BENEFITS
                            --------------------






 .    Echlin shareholders will receive an immediate 23% premium and 32%
     premium over 30-day trading average

 .    Echlin Shareholders will own 70% of a combined company with upside
     potential

 .    SPX shareholders will own part of larger company with increased
     value-creation opportunities

 .    Combined company will be a global leader across entire vehicle service
     lifecycle
<PAGE>
                      SPX HAS "BEEN THERE, DONE THAT"
                      -------------------------------







 .    SPX had been a long time underperformer

 .    Current leadership team successfully turned around SPX in just two
     years

     -   Quickly implemented EVA as financial tool and driver of cultural 
         change

     -   Took shareholder-friendly actions

 .    Operating margins doubled

 .    Sales per employee up more than 50%

 .    Stock price quadrupled
<PAGE>
                         ECHLIN STOCK TOTAL RETURN
                         -------------------------






          [CHART COMPARING ECHLIN STOCK TOTAL RETURN TO SPX]







                  ECHLIN STOCK UNDERPERFORMING EVEN AFTER
                    NEARLY ONE YEAR UNDER NEW LEADERSHIP
<PAGE>
                        SPX AND ECHLIN TOTAL RETURN
                        ---------------------------






                  [CHART COMPARING SPX AND ECHLIN STOCK
                         TOTAL RETURN TO SPX]







      SPX's STOCK HAS QUADRUPLED WHILE ECHLIN's STOCK HAS STAYED FLAT
<PAGE>
                          SPX's PROGRAM FOR ECHLIN
                          ------------------------






 .    Application of an aggressive shareholder focused agenda to Echlin

 .    Focus on cost structure

 .    More effective use of capital

 .    Productivity enhancements

 .    Selective divestitures

 .    EVA-based compensation
<PAGE>
                          SPX's PROGRAM FOR ECHLIN
                          ------------------------







 .    Achieve annual cost savings of at least $125 million in first full
     year, increasing to $175 million thereafter

 .    Reduce headcount by approximately 3,000 positions or nearly 10% of
     Echlin's global workforce

 .    Restructure or divest underperforming Echlin assets

 .    Accelerate EVA-based compensation programs

 .    Pursue targeted share repurchases

 .    Speed and execution are crucial
<PAGE>
                           ESTIMATED COST SAVINGS
                           ----------------------






(In $ Millions)



                                            Year 2              Total Annual
                                          Additional              Savings,
                        Year 1             Savings            Yr. 2 and Beyond
                        ------            ----------          ----------------
Headcount Reduction      $100               $20                    $120
(3,000 x $40K)

Duplicate Corporate        10                10                      20
Costs

Manufacturing/             15                20                      35
Distribution 
Rationalization, 
Sourcing
                        ------            ----------         -----------------
Total                    $125               $50                    $175
                        ======            ==========         =================






                      ESTIMATED COST SAVINGS WILL MAKE
                         TRANSACTION EPS ACCRETIVE
<PAGE>
                           VALUE/EVA OPPORTUNITY
                           ---------------------







                             SALES PER EMPLOYEE
                              (In $ Thousands)





                    [CHART COMPARING SPX AND ECHLIN
                   SALES PER EMPLOYEE TO PEER GROUP]













LTM = Last twelve months

Peer Group Includes:  Arvin, Dana, Federal Mogul, Standard Motor Products







             ECHLIN HAS LOWEST SALES PER EMPLOYEE IN PEER GROUP
            SIGNIFICANT OPPORTUNITY FOR PRODUCTIVITY IMPROVEMENT
<PAGE>
                           VALUE/EVA OPPORTUNITY
                           ---------------------







                 CAPITAL EXPENDITURES AS A PERCENT OF SALES




                 [CHART COMPARING CAPITAL EXPENDITURES
                    AT SPX, ECHLIN AND PEER GROUP]













LTM = Last twelve months







                   ECHLIN HAS HIGHEST CAPEX IN PEER GROUP
         SIGNIFICANT OPPORTUNITY FOR MORE EFFICIENT USE OF CAPITAL
<PAGE>
                           VALUE/EVA OPPORTUNITY
                           ---------------------







                        DIVIDEND YIELD SINCE 4/1/97




               [CHART COMPANY DIVIDEND YIELD AT ECHLIN,
                         SPX AND PEER GROUP]







              ECHLIN HAS HIGHEST DIVIDEND YIELD IN PEER GROUP
               OPPORTUNITY FOR MORE EFFICIENT USE OF CAPITAL
<PAGE>
                            STRATEGIC RATIONALE
                            -------------------






        [CHART DESCRIBING BUSINESS SEGMENTS AT SPX AND ECHLIN]







           COMBINATION INTEGRATES SERVICE PROCESS WITH COMPONENTS
                 GOOD FIT OF BUSINESS -- NEGLIGIBLE OVERLAP
<PAGE>
                        PROFILE OF COMBINED COMPANY
                        ---------------------------






                               SALES PROFILE
                              COMBINED COMPANY



            [CHART DESCRIBING PROFILE OF COMBINED COMPANY]







               COMBINED COMPANY WILL BE GLOBAL MARKET LEADER
                IN SERVICE SOLUTIONS AND VEHICLE COMPONENTS
<PAGE>
                               PRO FORMA 1998
                               --------------






                                  Net                Shares
                                Income            Outstanding             EPS
                                ------            -----------            -----
                                   (in $ millions, except per share items)

SPX - 1998 analysts'             $51.0               12.900              $3.95
expectation(1)

Echlin - 1998 analysts'          143.9                 --                 --
expectation(1)

Transaction:                    (78.0)                 --                 --
   $83 of incremental 
   interest, goodwill
   amortization of $22 
   and other expense
   of $7

Shares issued:                    --                 30.700               --
   64.1 million Echlin 
   shares @ exchange
   ratio of 0.4796
                                ------            -----------            -----
BEFORE SAVINGS                  $116.9               43.600              $2.68

$90 million savings              55.3                  --                 --
   (pretax) required to
   be EPS neutral
                                ------            -----------            -----
ADJUSTED                        $172.2               43.600              $3.95
                                ======            ===========            =====


(1)  Numbers derived from First Call consensus of $3.95 per share for SPX
     and $2.28 per share for Echlin.

         $90 MILLION OF SAVINGS REQUIRED TO BE EPS NEUTRAL IN 1998
<PAGE>
                               SPX AND ECHLIN
<PAGE>

Certain statements contained in these slides that are not historical facts
are "Forward-Looking Statements" within the meaning of the Private
Securities Litigation Reform Act of 1995 and are thus prospective. These
Forward-Looking Statements are subject to risks, uncertainties and other
factors which could cause actual results to differ materially from future
results expressed or implied by such Forward-Looking Statements. More
information regarding such risks can be found in SPX's 1996 Form 10-K,
three-month, six-month, and nine-month Forms 10-Q and SPX's Registration
Statement on Form S-4, filed February 17, 1998.


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