The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 32
y. An am-meter whose hand or index isdrawn into the zero position bygravity, and whose displacementtherefrom is produced by theaction of the current to be meas-ured. Ammeter, Magnetic Vane. A fixed plate of soft iron is placedwithin a coil. Facing it is asecond disc free to move or swingon an axis.… … / 28 STANDARD EI.ECTRICAIv DICTIONARY. same instrument is wound for high resistance and constitutes aMagnetic Vane Voltmeter. Ammeter, Magnifying Spring. A solenoid ammeter in whicha spiral spring is used to convert the longitudinal motion of thearmature or movable core into a rotary motion (see…
Electricity
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