Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U. S. seacoast defenses .. (1904)
United States. War Dept · Washington, Govt. print. off. · leaf 117
allowing it to go back to the Off p, Si , … F111. Automatic O. L. and U. L. Circuit Breaker. 84 HANDBOOK FOR ELECTRICIANS. (rf) Renewals.—If. the first step which is of copper and hexagonal in shapebecomes burned, it may be removed by imscrewing it and substituting another.The arm may also be easily taken off and smoothed or renewed. (C)…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
