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 113
,^^MMi^^Uimi^^^^SSSSS^^m … Figs. 921 to 929.—Pole construction tools. Fig. 921, long handled digging shovel; fig. 922.digging bar; fig. 923, crow and digging bar; fig. 924, tamping and digging bar; fig. 925,wood handle tamping bar; fig. 926, slick digging tool; fig, 927, post hole augur; fig. 928,carr>ing hook; fig. 929,…
Electrical engineering
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