Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 658
he complete electricalcondition of any subscribers line may be ascertained in the mostconvenient manner. The methods of performing the various tests on the wire chiefsdesk have changed radically during recent years. The old practicemade use almost entirely of Wheatstone bridge methods, while… … G3S WIRE CHIEFS EQUIPMENT. 637 Although the Wheatstone bridge method is not in accordancewith what is now considered the most advanced practice for wirechiefs use, it will be described briefly, as it is in use in a large num-ber of exchanges. In the right-hand portion of Fig. 466 is shown a testing…
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