Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 859
s ay /? A? 2.loss JM /a/fs. … Fig. 1875. In the Universal Wiring Com-putor, by Carl Hering, charts are giv-en which give directly, and withoutcalculation or the use of formulae, thegauge number or cross section in cir-cular mils of lead for any number oflamps of any make at any distance orfor any loss. One of these tables…
Mechanical drawing
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