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- · New York, T. Audel · leaf 51
xplanation of theiruse. The American Standard or Brown and Sharps Gauge.—Thisgauge is commonly designated as A. W. G. or B. & S., and has beenadopted by brass manufacturers and is used mostly in measuring brass,copper, silver, German silver, and gold in both wire and plate. Birmingham or Stubs… … Circular ScaleStraight Scale. Fig. 823.—Micrometer screw gauge. It consists essentially of a screw whose thread is accu-rately turned to a pitch of some convenient fraction of an inch or centimetre. When thescrew is screwed home, the surfaces of A and B meet, and the instrument should thenread zero…
Electrical engineering
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