American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 162
1000 ^100 10 10 lOOi^lOOO … If it is desired to measure a conductor, the resistance of which is less than thesmallest coil of the rheostat b, it is only necessary to reverse the arrangement shownin Fig. 106 and place the 1,000 ohms in the arm R, and the 10 ohms in r. If then abalance is obtained by the insertion of, say, 20…
Telegraph
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