Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U.S. seacoast defenses (1902)
United States. War Dept, Anderson, George Lucius, 1849-1934 · Washington, Govt. Print. Off. · leaf 144
thick earth parapet reaching to the level of the lowerside of the barrel. The largest search light constructed has a mirror 6^ feet indiameter and an illuminating power of 3 X 10** candles. (H) TRANSPORTABI.E SEARCII-I.IGHT EQUIPME:N^T. Four sets (figs. 135-6) were ordered in the first preparations…
Electric machinery · Searchlights · Coast defenses
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