Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 767
each of these arcs is pivoted a teiescope. tbe pivot ofwhich is connected to a battery B The telescopes are in electrical contactwith the arcs. These metallic arcs are connected at their extremities witha galvanometer, c, the whole forming a Wheatstone bridge, whose arms areaa bb. When the… … Fig. 10. Fig. 11. is noted. By swinging the telescope at F around till the needle of thegalvanometer indicates zero, the bridge balances, tbe telescope beingparallel to the one at C, and the arc or angle DF — FE is equal to theangle at A. From this the distance AC can be calculated, or read…
Electrical engineering
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