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 133
ith tem-porary or repair work, or where the wires pass through trees having numerous branches.The illustration shows a Cutler tree insulator lashed to the trunk of a tree. It is made of asingle piece of glass, and is provided with a slot which the wire cannot leave accidentally.The back of the…
Electrical engineering
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-532-326.webp)
