Electrical and scientific instruments and apparatus : november 20th, 1899 (1899)
Elmer G. Willyoung & Co · New York : E.G. Willyoung · leaf 112
ed steel braced with iron and japanned; it carries a brass scale, enginedivided, to read direct in C. P,; white divisions on black ground. Scale isset at an angle of 45° so as to make reading easy without stooping. Thewhole is supported by a vertically adjustable pillar. The screen is an improved… … 108 109 Rotator and Standard Lamp Socket are each mounted upon a smallsub-base, each of which carries as well a sliding rheostat for bringing thevoltage to the desired value. In setting up the instrument the several parts may be mounted uponone table top or, if prefered, bar, rotator and standard…
Electric apparatus and appliances · Equipment and supplies
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