Electrical and scientific instruments and apparatus : november 20th, 1899 (1899)
Elmer G. Willyoung & Co · New York : E.G. Willyoung · leaf 56
Fig. 44. W4301. … Fit?. 45. W4302. Grade B. 53 STANDARD HIGH RESISTANCES. 1V4315. 50000 Ohms Grade B $25 50 In brass case with rubber top ; two terminals at top of hard rubberpillars.W4316. 100000 Ohms Grade B $33 50 Same style as W4315.W4317. 250000 Ohms Grade B $75 00 Five groups of coils of 50000 ohms each. Same…
Electric apparatus and appliances · Equipment and supplies
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