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 503
Fig. 136. Contact-Making Clock Courtesy of Chicago Electric Meter Company 458 ELECTRICAL MEASUREMENTS 161 … Fig. 137. Printometer Courtesy of Chicago Electric Meter Company of record obtained for an interval of one hour in Fig. 138, in whichthe left-hand smaller figures indicate time and the right-hand figurescorrespond to the reading of the watt-hour meter at the given time. This instrument contains a…
Electrical engineering
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