Hobart, H. M. (Henry Metcalf), 1868-1946 ed · Philadelphia, J. B. Lippincott · leaf 349
meters of the wires have been mea-sured and tables have been prepared givingtheir actual sizes, weights, strengths, re-sistances, &c. Dealing with size only, thefollowing are the diameters of a No. 13 wirein the diiferent gauges: BWG = 0095 in,BWGg, = 0-036 in, B & S = 0-072 in,FWG = 0-0752… … Micrometer put on the market. With this instrumentthe diameters of wires can readily be measured to less than the thousandth of an inch.The chief mechanical principle embodied inthe construction of this instrument, of whichan illustration is herewith given, is that of ascrew free to move in a fixed…
Electrical engineering
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