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 115
equal to thenumber marked on the block. The battery and galvanometer keys can be con-trolled by one button, the battery contacts beingmade first. Or they can be depressed separately,as desired. The inside connections are shown in Fig. 64. To Use Bridge. Connect the terminals of theunknown… … Fig. 63. rc9^ —| L~p (5 6 (^ 5 fj *y I
Electric testing · Electric apparatus and appliances
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