Electrical instruments and testing; how to use the voltmeter, ohmmeter, ammeter, potentiometer, galvanometer, the Wheatstone bridge, and standard portable testing sets (1907)
Schneider, Norman H. (Norman Hugh), Hargrave, Jesse · New York, Spon & Chamberlain; [etc., etc.] · leaf 264
: ILLUMINATEDDIAL, ROUND PATTERN, EDGEWISE, DUPLEX, in lar.e variety of sizesand ranges are the best made mechanically, as well as electrically. They areunsurpassed in points of low consumption of energy and indicate instantaneouslyany variation in the circuits. Catalogues giving full description… … THE LEEDS & NORTHRUP CO. Electrical MeasuringInstruments INCLUDING Portable Testing Sets andCable Testing Apparatus
Electric testing · Electric apparatus and appliances
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