American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 175
roughout. The detector galvanometer may be used for this test. It is placed in thebrid2:e wire of the Wheatstone bridw. The connections are next made as in Fig. 121 in which a b are arms of thebridge; w is the * good wire of the loop, and w is the defective wire, connected,respectively, to the… … VARLEY LOOP TEST. VARLEY LOOP TEST. 141 When these connections have been made the keys are depressed and resistanceis inserted in R until a balance is secured. When this balance has been securedit may be seen by reference to Fig. 122, that the fault is moved, as it were, to themiddle of the loop…
Telegraph
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