Hudson and Manhattan has placed in service complete arrangement for testing relays; illustrated description of equipment, enclosed in sheet metal case which is mounted on table 30 in. by 72 in.
New A-C. and D-C. testing equipment on Hudson and Manhattan
Ry Signaling
Railway Signaling ; 33 , n 11
1940
3 pages
Aufsatz (Zeitschrift)
Englisch
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