Electrical and scientific instruments and apparatus : november 20th, 1899 (1899)
Elmer G. Willyoung & Co · New York : E.G. Willyoung · leaf 53
ox and Wlieatstone Bridgre Grade B $50 00 Fourteen coils of platinoid wire—0.5, 1, 1, 2, 3, 4, 10, 20, 30, 40, 100, 200, 300 and 400 ohms; total resistance 1111.5 ohms. Also Bridge Arms 1, 10, 100 and 1000 ohms on each side, and keys for battery and galvanometer. Bridge coils accurate to… … Fig. 42. W4305. Grade A. 49 RESISTANCE BOXES AND WHEATSTONE BRIDGESOF HIGH ACCURACY. The following Resistance Sets are strictly high grade, and no time or expense is spared to make them the very best of their types. All wire is carefully selected, and the hard rubber used is specially made for vs…
Electric apparatus and appliances · Equipment and supplies
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