New York [etc.] Simmons-Boardman Pub. Co. [etc.] · leaf 69
A USEFUL SPRING TESTER GAUGE.A TJSEFTTL SPRING TESTER GAUGE. In the testing laboratorj- of the Chicago & North-western Railway, at the West Chicago shops, aspring tester gauge is used that saves a great deal oftime and fussing. It was designed by Mr. E. B.Thompson, chief draughtsman of the…
Railroads · Railroad cars
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
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