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 57
hich arrests the heat by radiationand protects the fire shutter and aperture side of the film trap. The air space between thefilm trap is ^ inch. MOTION PICTURES 2,711 allowed to vary; this is accomplished by means of the beltdrive P, the belt permitting slippage below the maximum speed.It should…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
