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 77
N and fasten same into the rearwall by rear nuts V, close all camera doors and set the film counter to zero. Thecamera has either a fixed or an adjustable focus lens (the latter preferred) either lens has adiaphragm. The camera can be focused for either the inside or outside. After taking a…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
