Practical instructor and reference book for locomotive firemen and engineers: a practical treatise .. (1911)
Lockhart, Charles F. (Charles Fulton), b. 1872 · New York, The Norman W. Henley publishing co. · leaf 195
Fig. 50.—Large DuplexGauge, No. i. Fig. 51.—Small DuplexGauge, No. 2. matic application is indicated by the Black Hand of GaugeNo. 1. 577. The Black Hand of Gauge No. 2 is to show thebrake pipe pressure when the engine is second in doubleheading, or a helper. 578. The automatic brake valve…
Locomotives
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