Inside Out Library
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 142
ctionis hastened by damp and by the practice of exposing it to the rays of the sunwhile drying out the barrel. The life of a projector is shortened one-half fromlack of care. I I I I 3. Dust the hmirror surface gently with a softduster—do notclean by rubbing. 4. Set the car-bons before oper-ation… … o © ® ® < k—D — made of perforated fiber for the protection of the front glasses. 6. Diverging lenses are plano-convex in the horizontal plane only. The dooris made in strips similar to that having the plain glass, each strip being a plano-convex lens. 7. The parabolic surface projector which is…Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
More pictures from Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U.S. seacoast defenses
More like this
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-348-148.webp)
