Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 470
of two or moreindicating instruments, a special instrument box built to contain 425 128 ELECTRICAL MEASUREMENTS both instruments will be found convenient. The instrument boxmay also be built with a compartment for carrying tools, etc. Miscellaneous Equipment. Slide rules are desirable for… … Fig. 116. Edison Portable Storage Battery with Carbon RegulatingRheostat kept in first-class condition and that the insulation on the wires isnot deiective. The use of leads with frayed ends or defectiveinsulation may cause shott circuits which may result in personalinjury, or damage to the…
Electrical engineering
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