Kirkman, Marshall M. (Marshall Monroe), 1842-1921 · New York and Chicago, The World railway publishing company · leaf 114
Fig. 26. Pio. 87. Sectional View.Semaphore Duplex Air Gauge. phore gauge, is shown in Figs. 26 and ?7. Thepoints of difference in this gauge are the use o( singleBourdon springs with auxiliary springs (as described 106 LOCOMOTIVE APPLIANCES. more fully under Steam Gauges) and the black dialwith…
Locomotives
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