UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 8-A/A
                                 AMENDMENT NO. 1

                FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                     PURSUANT TO SECTION 12(b) OR (g) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


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

Delaware                                                 38-1016240
(State of incorporation or organization)       (IRS Employer Identification No.)

700 Terrace Point Drive, Muskegon, Michigan                49443
(Address of principal executive offices)                 (Zip Code)

Securities to be registered pursuant to Section 12(b) of the Act:

         Title of each class                     Name of each exchange on which
         to be so registered                     each class is to be registered

Preferred Stock Purchase Rights                       New York Stock Exchange
                                                      Pacific Stock Exchange


If this Form relates to the  registration  of a class of debt  securities and is
effective upon filing pursuant to General Instruction A.(c)(1), please check the
following box.

If this Form relates to the registration of a class of debt securities and is to
become  effective   simultaneously   with  the  effectiveness  of  a  concurrent
registration  statement  under the  Securities  Act of 1933  pursuant to General
Instruction A.(c)(2), please check the following box.

Securities to be registered pursuant to Section 12(g) of the Act:

                                      None
                                (Title of Class)






ITEM 1.  DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED.

         The  response  to Item 1 is hereby  amended in its  entirety to read as
follows:

         On June 25,  1996,  the  Board of  Directors  of SPX  Corporation  (the
"Company") declared a dividend of one preferred share purchase right (a "Right")
for each outstanding share of common stock, par value $10 per share (the "Common
Shares"),  of the Company. The dividend is payable on June 25, 1996 (the "Record
Date") to the  stockholders  of record on that  date.  Each Right  entitles  the
registered holder to purchase from the Company one  one-thousandth of a share of
Series A Junior  Participating  Preferred  Stock,  no par value (the  "Preferred
Shares"),  of the  Company  at a price  of  $200  per  one  one-thousandth  of a
Preferred Share (the "Purchase Price"),  subject to adjustment.  The description
and terms of the Rights are set forth in a Rights Agreement dated as of June 25,
1996, as amended by Amendment No. 1 to Rights  Agreement  effective  October 22,
1997 (the "Rights  Agreement")  between the Company and The Bank of New York, as
Rights Agent (the "Rights Agent").

         Until  the  earlier  to  occur  of  (i)  10  days  following  a  public
announcement  that a person or group of  affiliated  or  associated  persons (an
"Acquiring  Person")  have acquired  beneficial  ownership of 20% or more of the
outstanding Common Shares or (ii) 10 business days (or such later date as may be
determined by action of the Board of Directors  prior to such time as any person
or group of  affiliated  persons  becomes an  Acquiring  Person)  following  the
commencement  of, or  announcement  of an  intention  to make, a tender offer or
exchange  offer  the  consummation  of  which  would  result  in the  beneficial
ownership by a person or group of 20% or more of the  outstanding  Common Shares
(the earlier of such dates being  called the  "Distribution  Date"),  the Rights
will  be  evidenced,  with  respect  to  any of the  Common  Share  certificates
outstanding as of the Record Date, by such Common Share  certificate with a copy
of this Summary of Rights attached thereto.

         The Rights Agreement  provides that,  until the  Distribution  Date (or
earlier redemption or expiration of the Rights),  the Rights will be transferred
with and only with the Common Shares.  Until the  Distribution  Date (or earlier
redemption or expiration of the Rights),  new Common Share  certificates  issued
after the Record  Date upon  transfer  or new  issuance  of Common  Shares  will
contain a notation  incorporating  the Rights Agreement by reference.  Until the
Distribution  Date (or earlier  redemption  or  expiration  of the Rights),  the
surrender for transfer of any certificates  for Common Shares  outstanding as of
the Record Date,  even without such notation or a copy of this Summary of Rights
being  attached  thereto,  will  also  constitute  the  transfer  of the  Rights
associated with the Common Shares  represented by such  certificate.  As soon as
practicable  following the Distribution Date, separate  certificates  evidencing
the  Rights  ("Right  Certificates")  will be mailed to holders of record of the
Common  Shares as of the close of  business  on the  Distribution  Date and such
separate Right Certificates alone will evidence the Rights.

         The Rights are not exercisable until the Distribution  Date. The Rights
will expire on the tenth  anniversary of the Record Date (the "Final  Expiration
Date"),  unless the Final  Expiration  Date is extended or unless the Rights are
earlier redeemed or exchanged by the Company, in each case, as described below.

         The Purchase Price payable, and the number of Preferred Shares or other
securities  or  property  issuable,  upon  exercise of the Rights are subject to
adjustment  from time to time to  prevent  dilution  (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Shares, (ii) upon the grant to holders of the Preferred Shares of certain rights
or  warrants  to  subscribe  for or  purchase  Preferred  Shares at a price,  or
securities  convertible  into Preferred Shares with a conversation  price,  less
than the  then-current  market price of the  Preferred  Shares or (iii) upon the
distribution to holders of the Preferred  Shares of evidences of indebtedness or
assets  (excluding  regular  periodic  cash  dividends  paid out of  earnings or
retained  earnings or dividends  payable in Preferred Shares) or of subscription
rights or warrants (other than those referred to above).

         The number of outstanding Rights and the number of one  one-thousandths
of a Preferred  Share  issuable  upon exercise of each Right are also subject to
adjustment  in the  event  of a stock  split  of the  Common  Shares  or a stock
dividend  on the  Common  Shares  payable  in  Common  Shares  or  subdivisions,
consolidations or combinations of the Common Shares occurring, in any such case,
prior to the Distribution Date.

         Preferred  Shares  purchasable  upon exercise of the Rights will not be
redeemable.  Each  Preferred  Share will be entitled to a minimum,  preferential
quarterly  dividend payment of $5 per share but will be entitled to an aggregate
dividend of 1,000 times the dividend  declared per Common Share. In the event of
liquidation,  the holders of the Preferred  Shares will be entitled to a minimum
preferential  liquidation payment of $1,000 per share but will be entitled to an
aggregate  payment  of 1,000  times the  payment  made per  Common  Share.  Each
Preferred  Share will have 1,000 votes,  voting together with the Common Shares.
Finally, in the event of any merger, consolidation or other transaction in which
Common Shares are exchanged,  each  Preferred  Share will be entitled to receive
1,000 times the amount received per Common Share.  These rights are protected by
customary antidilution provisions.

         Because of the nature of the Preferred  Shares'  dividend,  liquidation
and voting rights, the value of the one  one-thousandth  interest in a Preferred
Share  purchasable  upon exercise of each Right should  approximate the value of
one Common Share.

         In the event that the Company is acquired in a merger or other business
combination  transaction  or 50% or more of its  consolidated  assets or earning
power are sold after a person or group has become an  Acquiring  Person,  proper
provision will be made so that each holder of a Right will  thereafter  have the
right to receive,  upon the exercise thereof at the then-current  exercise price
of the Right,  that number of shares of common  stock of the  acquiring  company
which at the time of such  transaction will have a market value of two times the
exercise price of the Right. In the event that any person or group of affiliated
or associated  persons becomes an Acquiring  Person,  proper  provision shall be
made so that each holder of a Right, other than Rights beneficially owned by the
Acquiring Person (which will thereafter be void), will thereafter have the right
to receive upon  exercise  that number of Common Shares having a market value of
two times the exercise price of the Right.

         At any time after any person or group  becomes an Acquiring  Person and
prior  to the  acquisition  by  such  person  or  group  of 50% or  more  of the
outstanding  Common  Shares,  the Board of Directors of the Company may exchange
the Rights  (other  than  Rights  owned by such  person or group which will have
become void),  in whole or in part, at an exchange ratio of one Common Share, or
one  one-thousandth  of a Preferred Share (or of a share of a class or series of
the  Company's  preferred  stock  having  equivalent  rights,   preferences  and
privileges), per Right (subject to adjustment).

         With certain  exceptions,  no adjustment in the Purchase  Price will be
required until  cumulative  adjustments  require an adjustment of at least 1% in
such Purchase Price. No fractional  Preferred  Shares will be issued (other than
fractions  which are  integral  multiples of one  one-thousandth  of a Preferred
Share,  which may, at the  election of the Company,  be evidenced by  depositary
receipts) and in lieu  thereof,  an adjustment in cash will be made based on the
market price of the  Preferred  Shares on the last trading day prior to the date
of exercise.

         At any time prior to the acquisition by a person or group of affiliated
or associated persons of beneficial  ownership of 20% or more of the outstanding
Common  Shares,  the Board of  Directors of the Company may redeem the Rights in
whole, but not in part, at a price of $.01 per right (the  "Redemption  Price").
The  redemption  of the Rights may be made  effective at such time on such basis
with  such  conditions  as the Board of  Directors  in its sole  discretion  may
establish.  Immediately upon any redemption of the Rights, the right to exercise
the Rights will terminate and the only right of the holders of Rights will be to
receive the Redemption Price.

         The terms of the Rights may be amended by the Board of Directors of the
Company without the consent of the holders of the Rights, including an amendment
to lower certain thresholds  described above to not less than the greater of (i)
the sum of .001% and the largest  percentage  of the  outstanding  Common Shares
then  known to the  Company to be  beneficially  owned by any person or group of
affiliated or associated  persons and (ii) 10%,  except that from and after such
time as any  person or group of  affiliated  or  associated  persons  becomes an
Acquiring  Person no such  amendment may  adversely  affect the interests of the
holders of the Rights  other than an Acquiring  Person,  and except that no such
amendment may, at any time,  extend or shorten the  redemption  period or change
the Purchase Price or the Redemption Price.

         Until a Right is exercised,  the holder thereof,  as such, will have no
rights as a stockholder of the Company, including, without limitation, the right
to vote or to receive dividends.

         The Rights have certain  anti-takeover  effects.  The Rights will cause
substantial  dilution to a person or group that  attempts to acquire the Company
on terms not approved by the Company's Board of Directors, except pursuant to an
offer conditioned on a substantial  number of Rights being acquired.  The Rights
should not interfere with any merger or other business  combination  approved by
the Board of  Directors  since the Rights may be  redeemed by the Company at the
Redemption  Price  prior  to the  time  that a  person  or  group  has  acquired
beneficial ownership of 20% or more of the Common Shares.

         The  Rights  Agreement,  dated  as of June  25,  1996,  as  amended  by
Amendment  No. 1 to Rights  Agreement  effective  October 22, 1997,  between the
Company and The Bank of New York, as Rights Agent,  specifying  the terms of the
Rights and of the Preferred  Shares as an exhibit thereto are attached hereto as
exhibits and are incorporated herein by reference.  The foregoing description of
the Rights is qualified in its entirety by reference to such exhibits.

ITEM 2.  EXHIBITS.

         The  response  to Item 2 is hereby  amended in its  entirety to read as
follows:

         1.       Rights  Agreement,  dated as of June  25,  1996,  between  SPX
                  Corporation  and  The  Bank of New  York  which  includes  the
                  Amended and Restated  Certificate of Designation,  Preferences
                  and Rights setting forth the terms of the preferred  stock, as
                  Exhibit A, the Form of Right  Certificate as Exhibit B and the
                  Summary of Rights to Purchase  Preferred  Shares as Exhibit C,
                  incorporated  by reference to Exhibit 1 of Form 8-A filed June
                  27, 1997.

         2.       Amendment  No. 1 to Rights  Agreement,  effective  October 22,
                  1997,  between  SPX  Corporation  and  The  Bank  of New  York
                  (including exhibits thereto).







                                    SIGNATURE

         Pursuant to the  requirements of Section 12 of the Securities  Exchange
Act of 1934, the registrant  has duly caused this  registration  statement to be
signed on its behalf by the undersigned, thereto duly authorized.

Date:    January 9, 1998

                                                     SPX CORPORATION


                                            By         John B. Blystone
                                            Name:      John B. Blystone
                                            Title:     Chairman, President and
                                                       Chief Executive Officer












                                 AMENDMENT NO. 1
                           Effective October 22, 1997
                                     to the


                                 SPX CORPORATION
                                       and
                              THE BANK OF NEW YORK
                                  Rights Agent


                                RIGHTS AGREEMENT


                            Dated As of June 25, 1996











                                 SPX CORPORATION
                                       and
                       THE BANK OF NEW YORK, Rights Agent

                                 AMENDMENT NO. 1
                                       to
                                RIGHTS AGREEMENT


AMENDMENT NO. 1 TO RIGHTS  AGREEMENT,  effective  October 22, 1997,  between SPX
CORPORATION,  a Delaware  corporation (the "Company"),  and THE BANK OF NEW YORK
(the "Rights Agent").

A. The Company and the Rights Agent entered into a Rights  Agreement dated as of
June 25, 1996 (the "Rights  Agreement"),  which the Company now desires to amend
in  certain  respects  and  the  Rights  Agent,  by  executing  this  Agreement,
acknowledges  such  amendments  in  accordance  with  Section  27 of the  Rights
Agreement. Accordingly, it is agreed as follows:

         1.       Section  1(a)  of the  Rights  Agreement  defining  "Acquiring
                  Person" is amended by  deleting  the words  "15%"  wherever it
                  appears therein and inserting "20%" in place thereof.

         2.       Section 3(a) of the Rights  Agreement  pertaining to the Issue
                  of Rights  Certificates is amended by deleting the words "15%"
                  wherever  it  appears  therein  and  inserting  "20%" in place
                  thereof.

         3.       Section  7(b)  of  the  Rights  Agreement  pertaining  to  the
                  Purchase  Price  is  amended  by  deleting  the  words  "$100"
                  wherever  it appears  therein  and  inserting  "$200" in place
                  thereof.

         4.       Section 27 of the Rights  Agreement  pertaining to supplements
                  and amendments is hereby deleted and replaced in its entirety
                  with the following:

                  Section 27.  Supplements and Amendments.  The Company may from
                  time to time  supplement or amend this  Agreement  without the
                  approval of any holders of Right Certificates in order to cure
                  any   ambiguity,   to  correct  or  supplement  any  provision
                  contained  herein which may be defective or inconsistent  with
                  any other provisions  herein,  or to make any other provisions
                  with  respect  to  the  Rights  which  the  Company  may  deem
                  necessary or desirable, any such supplement or amendment to be
                  evidenced  by a writing  signed by the  Company and the Rights
                  Agent; provided, however, that from and after such time as any
                  Person becomes an Acquiring  Person,  this Agreement shall not
                  be amended  in any manner  which  would  adversely  affect the
                  interests  of the  holders of Rights  other than an  Acquiring
                  Person;   and,  provided,   further,   that  no  amendment  or
                  supplement  may be made if the  effect  would be to  extend or
                  shorten  the  redemption  period  set forth in  Section  23 or
                  change the Purchase  Price or the  Redemption  Price.  Without
                  limiting the  foregoing,  the Company may at any time prior to
                  such time as any Person becomes an Acquiring Person amend this
                  Agreement to lower the  thresholds  set forth in Sections 1(a)
                  and 3(a) to not less than the  greater of (i) the sum of .001%
                  and the largest  percentage of the  outstanding  Common Shares
                  then  known by the  Company  to be  beneficially  owned by any
                  Person (other than the Company, any Subsidiary of the Company,
                  any employee  benefit plan of the Company or any Subsidiary of
                  the  Company,  or any  entity  holding  Common  Shares  for or
                  pursuant to the terms of any such plan) and (ii) 10%.

         5.       The form of Right  Certificate  attached  as  Exhibit B to the
                  Rights  Agreement  is hereby  replaced in its  entirety by the
                  form of Right Certificate attached as Exhibit 1 hereto.

         6.       The Summary of Rights to Purchase  Preferred Stock attached as
                  Exhibit C to the Rights  Agreement  is hereby  replaced in its
                  entirety by the Summary of Rights to Purchase  Preferred Stock
                  attached as Exhibit 2 hereto.

B. As promptly as practicable following the date of this Amendment,  the Company
shall  cause:  (i) the Summary of Rights to Purchase  Preferred  Stock  attached
hereto  as  Exhibit 2 to be sent by  first-class  postage  prepaid  mail to each
holder of record of Common Stock as of the close of business on the date hereof,
at the address of such holder as shown on the records of the  Company,  (ii) the
legend  on the  certificates  for  the  Common  Stock  referring  to the  Rights
Agreement to be  supplemented  so as to make  reference to this  Amendment,  and
(iii) the form of Rights  Certificate  to be  amended  as set forth on Exhibit 1
hereto.






IN WITNESS  WHEREOF,  the parties  hereto have  caused this  Amendment  No. 1 to
Rights Agreement to be duly executed as of the day and year first above written.

ATTEST                                        SPX CORPORATION


By       Christopher J. Kearney               By         John B. Blystone
Title:   Secretary                            Title:     Chairman, President and
                                                         Chief Executive Officer

ATTEST                                        THE BANK OF NEW YORK


By       Camille Nunnari                      By         John Sivertsen
Title:   Assistant Vice President             Title:     Vice President









                                                                      Exhibit 1


                            Form of Right Certificate

Certificate No. R-                                            __________ Rights


                NOT EXERCISABLE AFTER JUNE 25, 2006 OR EARLIER IF
              REDEMPTION OR EXCHANGE OCCURS. THE RIGHTS ARE SUBJECT
             TO REDEMPTION AT $.01 PER RIGHT AND TO EXCHANGE ON THE
                    TERMS SET FORTH IN THE RIGHTS AGREEMENT.

                                Right Certificate
                                 SPX CORPORATION


         This certifies that ____________________, or registered assigns, is the
registered owner of the number of Rights set forth above, each of which entitles
the owner thereof, subject to the terms, provisions and conditions of the Rights
Agreement,  dated as of June 25, 1996,  as amended by Amendment  No. 1 to Rights
Agreement  effective  October 22,  1997 (the  "Rights  Agreement"),  between SPX
Corporation,  a Delaware  corporation (the "Company"),  and The Bank of New York
(the  "Rights  Agent"),  to  'purchase  from the  Company  at any time after the
Distribution Date (as such term is defined in the Rights Agreement) and prior to
5:00 P.M.,  New York City time, on June 25, 2006 at the principal  office of the
Rights  Agent,  or  at  the  office  of  its  successor  as  Rights  Agent,  one
one-thousandth  of  a  fully  paid  non-assessable  share  of  Series  A  Junior
Participating  Preferred Stock, no par value per share (the "Preferred Shares"),
of the  Company,  at a  purchase  price  of  $200  per one  one-thousandth  of a
Preferred Share (the "Purchase Price"),  upon presentation and surrender of this
Right  Certificate  with the Form of  Election to Purchase  duly  executed.  The
number of Rights  evidenced  by this  Right  Certificate  (and the number of one
one-thousandths  of a  Preferred  Share  which may be  purchased  upon  exercise
hereof) set forth above,  and the Purchase Price set forth above, are the number
and  Purchase  Price  as of June 25,  1996,  based on the  Preferred  Shares  as
constituted  at such date.  As provided in the Rights  Agreement,  the  Purchase
Price and the number of one  one-thousandths  of a Preferred  Share which may be
purchased  upon the exercise of the Rights  evidenced by this Right  Certificate
are subject to modification and adjustment upon the happening of certain events.

         This Right  Certificate is subject to all of the terms,  provisions and
conditions of the Rights Agreement,  which terms,  provisions and conditions are
hereby  incorporated  herein by  reference  and made a part  hereof and to which
Rights Agreement  reference is hereby made for a full description of the rights,
limitations  of rights,  obligations,  duties and  immunities  hereunder  of the
Rights Agent, the Company and the holders of the Right  Certificates.  Copies of
the  Rights  Agreement  are on file at the  principal  executive  offices of the
Company and the abovementioned offices of the Rights Agent.

         This Right Certificate, with or without other Right Certificates,  upon
surrender at the  principal  office of the Rights  Agent,  may be exchanged  for
another  Right  Certificate  or  Right  Certificates  of  like  tenor  and  date
evidencing  Rights  entitling the holder to purchase a like aggregate  number of
Preferred  Shares as the  Rights  evidenced  by the Right  Certificate  or Right
Certificates  surrendered  shall have entitled such holder to purchase.  If this
Right  Certificate  shall be exercised in part,  the holder shall be entitled to
receive upon surrender  hereof another Right  Certificate or Right  Certificates
for the number of whole Rights not exercised.

         Subject to the provisions of the Rights Agreement, the Rights evidenced
by this  Certificate (i) may be redeemed by the Company at a redemption price of
$.01 per Right or (ii) may be exchanged in whole or in part for Preferred Shares
or shares of the Company's Common Stock., par value $10 per share.

         No fractional  Preferred Shares will be issued upon the exercise of any
Right or Rights  evidenced  hereby  (other  than  fractions  which are  integral
multiples of one one-thousandth of a Preferred Share, which may, at the election
of the Company, be evidenced by depositary receipts), but in lieu thereof a cash
payment will be made, as provided in the Rights Agreement.

         No  holder  of this  Right  Certificate  shall be  entitled  to vote or
receive  dividends  or be deemed for any  purpose  the  holder of the  Preferred
Shares  or of any  other  securities  of the  Company  which  may at any time be
issuable on the  exercise  hereof,  nor shall  anything  contained in the Rights
Agreement or herein be construed to confer upon the holder hereof,  as such, any
of the  rights  of a  stockholder  of the  Company  or any right to vote for the
election  of  directors  or upon any matter  submitted  to  stockholders  at any
meeting thereof,  or to give or withhold consent to any corporate  action, or to
receive notice of meetings or other actions  affecting  stockholders  (except as
provided  in the Rights  Agreement),  or to receive  dividends  or  subscription
rights,  or  otherwise,  until  the  Right or  Rights  evidenced  by this  Right
Certificate shall have been exercised as provided in the Rights Agreement.

         This  Rights  Certificate  shall  not be  valid or  obligatory  for any
purpose until it shall have been countersigned by the Rights Agent.

         WITNESS the facsimile  signature of the proper  officers of the Company
and its corporate seal. Dated as of _______________, ____.

ATTEST:                                                     SPX CORPORATION

By:                                                         By:
     Its:                                                        Its:

Countersigned:

THE BANK OF NEW YORK,
as Rights Agent

By:
     Authorized Signature











                    Form of Reverse Side of Right Certificate

                               FORM OF ASSIGNMENT


         (To be executed  by the  registered  holder if such  holder  desires to
transfer the Right Certificate.)

          FOR VALUE RECEIVED  ____________________  hereby  sells,  assigns and
     transfers unto

                  (Please print name and address of transferee)
this Right Certificate, together with all right, title and interest therein, and
does hereby irrevocably constitute and appoint ____________________ Attorney, to
transfer the within Right Certificate on the books of the within-named  Company,
with fall power of substitution.

Dated:   ____________________




                                    Signature


Signature Guaranteed:

     Signatures  must be  guaranteed  by a member firm of a registered  national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondent in
the United States.
- --------------------------------------------------------------------------------
The  undersigned  hereby  certifies  that the  Rights  evidenced  by this  Right
Certificate are not beneficially owned by an Acquiring Person or an Affiliate or
Associate thereof (as defined in the Rights Agreement).



                                    Signature






                          FORM OF ELECTION TO PURCHASE,
         (To be executed if holder desires to exercise Rights represented by the
Right Certificate.)
TO:      SPX CORPORATION

         The    undersigned    hereby    irrevocably    elects    to    exercise
____________________  Rights  represented by this Right  Certificate to purchase
the Preferred Shares issuable upon the exercise of such Rights and requests that
certificates for such Preferred Shares be issued in the name of:

Please insert social security
or other identifying number


                  (Please print name and address)



         If such number of Rights shall not be all the Rights  evidenced by this
Right  Certificate,  a new Right  Certificate for the balance  remaining of such
Rights shall be registered in the name of and delivered to:

Please insert social security
or other identifying number


                  (Please print name and address)



Dated:


                                    Signature

Signature Guaranteed:

     Signatures  must be  guaranteed  by a member firm of a registered  national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondent in
the United States.
- --------------------------------------------------------------------------------
The  undersigned  hereby  certifies  that the  Rights  evidenced  by this  Right
Certificate are not beneficially owned by an Acquiring Person or an Affiliate or
Associate thereof (as defined in the Rights Agreement).


                                    Signature






                                     NOTICE


         The  signature  in the  Form  of  Assignment  or Form  of  Election  to
Purchase,  as the case may be, must conform to the name as written upon the face
of this Right Certificate in every particular, without alteration or enlargement
or any change whatsoever.

         In  the  event  the  certification  set  forth  above  in the  Form  of
Assignment  or the Form of  Election  to  Purchase,  as the case may be,  is not
completed,  the Company and the Rights Agent will deem the  beneficial  owner of
the Rights  evidenced by this Right  Certificate to be an Acquiring Person or an
Affiliate or  Associate  thereof (as defined in the Rights  Agreement)  and such
Assignment or Election to Purchase will not be honored.







3





                                                                      Exhibit 2

                            SUMMARY OF AMENDED RIGHTS
                          TO PURCHASE PREFERRED SHARES

                                  (As Amended Effective October 22, 1997)


         On June 25,  1996,  the  Board of  Directors  of SPX  Corporation  (the
"Company") declared a dividend of one preferred share purchase right (a "Right")
for each outstanding share of common stock, par value $10 per share (the "Common
Shares"),  of the Company. The dividend is payable on June 25, 1996 (the "Record
Date") to the  stockholders  of record on that  date.  Each Right  entitles  the
registered holder to purchase from the Company one  one-thousandth of a share of
Series A Junior  Participating  Preferred  Stock,  no par value (the  "Preferred
Shares"),  of the  Company  at a price  of  $200  per  one  one-thousandth  of a
Preferred Share (the "Purchase Price"),  subject to adjustment.  The description
and terms of the Rights are set forth in a Rights Agreement dated as of June 25,
1996, as amended by Amendment No. 1 to Rights  Agreement  effective  October 22,
1997 (the "Rights  Agreement")  between the Company and The Bank of New York, as
Rights Agent (the "Rights Agent").

         Until  the  earlier  to  occur  of  (i)  10  days  following  a  public
announcement  that a person or group of  affiliated  or  associated  persons (an
"Acquiring  Person")  have acquired  beneficial  ownership of 20% or more of the
outstanding Common Shares or (ii) 10 business days (or such later date as may be
determined by action of the Board of Directors  prior to such time as any person
or group of  affiliated  persons  becomes an  Acquiring  Person)  following  the
commencement  of, or  announcement  of an  intention  to make, a tender offer or
exchange  offer  the  consummation  of  which  would  result  in the  beneficial
ownership by a person or group of 20% or more of the  outstanding  Common Shares
(the earlier of such dates being  called the  "Distribution  Date"),  the Rights
will  be  evidenced,  with  respect  to  any of the  Common  Share  certificates
outstanding as of the Record Date, by such Common Share  certificate with a copy
of this Summary of Rights attached thereto.

         The Rights Agreement  provides that,  until the  Distribution  Date (or
earlier redemption or expiration of the Rights),  the Rights will be transferred
with and only with the Common Shares.  Until the  Distribution  Date (or earlier
redemption or expiration of the Rights),  new Common Share  certificates  issued
after the Record  Date upon  transfer  or new  issuance  of Common  Shares  will
contain a notation  incorporating  the Rights Agreement by reference.  Until the
Distribution  Date (or earlier  redemption  or  expiration  of the Rights),  the
surrender for transfer of any certificates  for Common Shares  outstanding as of
the Record Date,  even without such notation or a copy of this Summary of Rights
being  attached  thereto,  will  also  constitute  the  transfer  of the  Rights
associated with the Common Shares  represented by such  certificate.  As soon as
practicable  following the Distribution Date, separate  certificates  evidencing
the  Rights  ("Right  Certificates")  will be mailed to holders of record of the
Common  Shares as of the close of  business  on the  Distribution  Date and such
separate Right Certificates alone will evidence the Rights.

         The Rights are not exercisable until the Distribution  Date. The Rights
will expire on the tenth  anniversary of the Record Date (the "Final  Expiration
Date"),  unless the Final  Expiration  Date is extended or unless the Rights are
earlier redeemed or exchanged by the Company, in each case, as described below.

         The Purchase Price payable, and the number of Preferred Shares or other
securities  or  property  issuable,  upon  exercise of the Rights are subject to
adjustment  from time to time to  prevent  dilution  (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Shares, (ii) upon the grant to holders of the Preferred Shares of certain rights
or  warrants  to  subscribe  for or  purchase  Preferred  Shares at a price,  or
securities  convertible  into Preferred Shares with a conversation  price,  less
than the  then-current  market price of the  Preferred  Shares or (iii) upon the
distribution to holders of the Preferred  Shares of evidences of indebtedness or
assets  (excluding  regular  periodic  cash  dividends  paid out of  earnings or
retained  earnings or dividends  payable in Preferred Shares) or of subscription
rights or warrants (other than those referred to above).

         The number of outstanding Rights and the number of one  one-thousandths
of a Preferred  Share  issuable  upon exercise of each Right are also subject to
adjustment  in the  event  of a stock  split  of the  Common  Shares  or a stock
dividend  on the  Common  Shares  payable  in  Common  Shares  or  subdivisions,
consolidations or combinations of the Common Shares occurring, in any such case,
prior to the Distribution Date.

         Preferred  Shares  purchasable  upon exercise of the Rights will not be
redeemable.  Each  Preferred  Share will be entitled to a minimum,  preferential
quarterly  dividend payment of $5 per share but will be entitled to an aggregate
dividend of 1,000 times the dividend  declared per Common Share. In the event of
liquidation,  the holders of the Preferred  Shares will be entitled to a minimum
preferential  liquidation payment of $1,000 per share but will be entitled to an
aggregate  payment  of 1,000  times the  payment  made per  Common  Share.  Each
Preferred  Share will have 1,000 votes,  voting together with the Common Shares.
Finally, in the event of any merger, consolidation or other transaction in which
Common Shares are exchanged,  each  Preferred  Share will be entitled to receive
1,000 times the amount received per Common Share.  These rights are protected by
customary antidilution provisions.

         Because of the nature of the Preferred  Shares'  dividend,  liquidation
and voting rights, the value of the one  one-thousandth  interest in a Preferred
Share  purchasable  upon exercise of each Right should  approximate the value of
one Common Share.

         In the event that the Company is acquired in a merger or other business
combination  transaction  or 50% or more of its  consolidated  assets or earning
power are sold after a person or group has become an  Acquiring  Person,  proper
provision will be made so that each holder of a Right will  thereafter  have the
right to receive,  upon the exercise thereof at the then-current  exercise price
of the Right,  that number of shares of common  stock of the  acquiring  company
which at the time of such  transaction will have a market value of two times the
exercise price of the Right. In the event that any person or group of affiliated
or associated  persons becomes an Acquiring  Person,  proper  provision shall be
made so that each holder of a Right, other than Rights beneficially owned by the
Acquiring Person (which will thereafter be void), will thereafter have the right
to receive upon  exercise  that number of Common Shares having a market value of
two times the exercise price of the Right.

         At any time after any person or group  becomes an Acquiring  Person and
prior  to the  acquisition  by  such  person  or  group  of 50% or  more  of the
outstanding  Common  Shares,  the Board of Directors of the Company may exchange
the Rights  (other  than  Rights  owned by such  person or group which will have
become void),  in whole or in part, at an exchange ratio of one Common Share, or
one  one-thousandth  of a Preferred Share (or of a share of a class or series of
the  Company's  preferred  stock  having  equivalent  rights,   preferences  and
privileges), per Right (subject to adjustment).

         With certain  exceptions,  no adjustment in the Purchase  Price will be
required until  cumulative  adjustments  require an adjustment of at least 1% in
such Purchase Price. No fractional  Preferred  Shares will be issued (other than
fractions  which are  integral  multiples of one  one-thousandth  of a Preferred
Share,  which may, at the  election of the Company,  be evidenced by  depositary
receipts) and in lieu  thereof,  an adjustment in cash will be made based on the
market price of the  Preferred  Shares on the last trading day prior to the date
of exercise.

         At any time prior to the acquisition by a person or group of affiliated
or associated persons of beneficial  ownership of 20% or more of the outstanding
Common  Shares,  the Board of  Directors of the Company may redeem the Rights in
whole, but not in part, at a price of $.01 per right (the  "Redemption  Price").
The  redemption  of the Rights may be made  effective at such time on such basis
with  such  conditions  as the Board of  Directors  in its sole  discretion  may
establish.  Immediately upon any redemption of the Rights, the right to exercise
the Rights will terminate and the only right of the holders of Rights will be to
receive the Redemption Price.

         The terms of the Rights may be amended by the Board of Directors of the
Company without the consent of the holders of the Rights, including an amendment
to lower certain thresholds  described above to not less than the greater of (i)
the sum of .001% and the largest  percentage  of the  outstanding  Common Shares
then  known to the  Company to be  beneficially  owned by any person or group of
affiliated or associated  persons and (ii) 10%,  except that from and after such
time as any  person or group of  affiliated  or  associated  persons  becomes an
Acquiring  Person no such  amendment may  adversely  affect the interests of the
holders of the Rights  other than an Acquiring  Person,  and except that no such
amendment may, at any time,  extend or shorten the  redemption  period or change
the Purchase Price or the Redemption Price.

         Until a Right is exercised,  the holder thereof,  as such, will have no
rights as a stockholder of the Company, including, without limitation, the right
to vote or to receive dividends.

         A copy of the Rights  Agreement dated as of June 25, 1996 and a copy of
Amendment No. 1 to Rights  Agreement  effective  October 22, 1997 has been filed
with the  Securities  and Exchange  Commission  as an Exhibit to a  Registration
Statement  on Form 8-A.  A copy of the Rights  Agreement  is  available  free of
charge from the Company. This summary description of the Rights does not purport
to be complete  and is  qualified  in its  entirety by  reference  to the Rights
Agreement, which is hereby incorporated herein by reference.