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 160
al with telegraph systems as well as battery and generatortroubles and proper adjustments of relays. The Christie orso called Wheatstone bridge is therefore much used by tele-graph men for testing.* The wire to be tested is grounded at some distant station after thedistant operator has been… … CABLE
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
