Electrical and scientific instruments and apparatus : november 20th, 1899 (1899)
Elmer G. Willyoung & Co · New York : E.G. Willyoung · leaf 163
158 LAMP INSPECTORS WATTMETERS. … Fig. 126. Lamp Inspectors Wattmeter. Particularly recommended for measuring watts used in lamps or smallmotors; may be used on either direct or alternating circuits. Has a flex-ible with adapters to fit Edison, Westinghouse or T. H. system. Capacity,150 watts. Mounted in polished case with snap…
Electric apparatus and appliances · Equipment and supplies
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