From: Phil.Kane@nov.shmovz.ka.pop   
      
   On Tue, 2 Dec 2014 22:46:42 +0000 (UTC), danny burstein   
    wrote:   
      
   >Sperry makes soem pretty impressive non-destructive   
   >test equipment that (in this case) sits in railroad   
   >cars and examines the tracks underneath. A combination   
   >of super exact micrometers, ultrasound, and lots of   
   >whiz-bang black boxes designed to test the track and   
   >find problems before they cause disasters.   
   >   
   >The NYCTA system has a bunch of these, and they're   
   >generally called... "Sperry Cars".   
      
   The "original" cars were outfitted and run by Sperry Rail Services,   
   hence "Sperry Cars".  IIRC SRS is still in business for those roads   
   who don't have their own rail detection cars.   
      
   "Stand Clear of the Closing Doors, Please"   
      
   Phil Kane - Beaverton, OR   
   PNW CP HALL  MP 29.9 - OE District   
      
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