Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 86
position by the nuts E, and washers F, screwed onthe ends of the tube D. The bars are insulated from each otherand from the washers by mica as shown by the heavy lines G,and they are. also insulated from the tube either by a tube ofmica H, or by a sufficient air space. The ends of the sectionsof… … INSULATIONSECTION ON LINE MS
Electrical engineering
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