Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 305
into twocoils wound with a different number of turns, each of w^hichis inserted in series with the movable coil and brought out toseparate posts. Thus, if it is desired to measure a currentknown to be between one-tenth and 1 ampere, the right-handbinding posts are used, and if between 1 and 100… … Fig. 2oi.—Dynamometer Ammeter for Alternating or Direct Currents. Portable Form. ELECTRO D YNAMICS. 287
Electricity · Magnetism
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