Kirkman, Marshall M. (Marshall Monroe), 1842-1921 · New York and Chicago, The World railway publishing company · leaf 115
always stand at rightangles with the seventy pounds pressure point whichis at the top of the dial. On this dial a much widerspace is allowed for each five pounds pressure, so asto insure closer and more accurate reductions in trainbraking. The glass over the dial is an oval crystallike a watch, and…
Locomotives
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