Electrical and scientific instruments and apparatus : november 20th, 1899 (1899)
Elmer G. Willyoung & Co · New York : E.G. Willyoung · leaf 52
our W4396. The upper row constitutes the Bridge or ratio Arms R 4and Rg with coils of 1, 10, 100 and 1,000 ohms on each side of the centre,while the two lower rows taken together make up the rheostat arm Rg.In use one coil of each Bridge Arm is left unplugged ; if we have 10 out inthe left arm and… … Fig. 41. W4296. 48 RESISTANCE BOXES AND WHEATSTONE BRIDGESOF FAIR ACCURACY. Wound with Platinoid Wire and adjusted to an accuracy of 1-5^. Incherry box with segments mounted on hard rubber. Substantiallyconstructed.W4290, Resistance Box Grade B $32 50 1111,5 ohms, divided into fourteen coils of…
Electric apparatus and appliances · Equipment and supplies
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