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 175
l arm levers CC to contact arms DD,which carry contact rollers E E, these contact rollers bearing upon the peripheryof rheostats F F, the terminals of these rheostats being connected throughmaster switch G to the positive and negative poles of a suitable source of elec-trical energy, indicated by… … 107. Telautoi^raph with Cover Removed to Sho^y the Workinjj Parts. I:i4 TELEGRAPHY. 125
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
