International Library of Technology · Scranton, International Textbook Co. · leaf 460
y*. ELECTRIC LIGHTING. 18 … Fig. 59. § 18 ELECTRIC LIGHTING. 93 means of the fittings shown. In this projector these move-ments are accomplished by hand, but in many of the pro-jectors used for naval work the movements are brought aboutby small motors mounted in the base, so that, if desired, thesearchlight may be controlled…
Electrical engineering
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