Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 257
ion isin terms of the pressure causing this current to flow. See Exp.57,1[-182. 234. Construction of Voltmeters.—The same principlesemployed in the construction of ammeters, ^f 204, etc., are employed in construct-ing voltmeters, the onlydifference being that thewindings are of very finewire,… … Fig. 212.—Weston Double Scale Voltmeter. already given,method of calibration is given in f\ 182. 235. Weston Voltmeter.—The same construction is em-ployed in this make of voltmeter as in the Weston ammeter,lj 208, extra resistance being connected in series with themovable coil and the terminals…
Electricity · Magnetism
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