Testing electric locking; maintenance and operation of a-c and d-c track circuits, and of lead acid type storage batteries; portable d-c voltmeters, ammeters and volt-ammeters; signal interruptions; joint signal facilities; maintaining and testing light signals, electric lamps, and car retarder systems; inspecting, testing and maintaining insulated rail joints, and switch circuit controllers; manual and controlled manual block systems.
Committee V -- Contracts and instructions
Assn Am Railroads -- Proc (Signal Sec)
1935
73 pages
Article (Journal)
English
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Committee V -- Contracts and instructions
Engineering Index Backfile | 1944
Committee V -- Contracts and instructions
Engineering Index Backfile | 1941
Committee V -- Contracts and instructions
Engineering Index Backfile | 1938
Committee V -- Contracts and instructions
Engineering Index Backfile | 1938
Committee V -- Contracts and instructions
Engineering Index Backfile | 1936