
                                                            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
