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 441
t and feet per minute. Proof=plane. A small conductor, usually disc shaped, carriedat the end of an insulating handle. It is used to collect electricityby contact, from objects electrostatically charged. The charge ithas received is then measured (see Torsion Balance) or otherwisetested. (See Prime… … Fig. 275. Box Bridge. Proportionate Arms, in general terms the arms of a Wheat-stone bridge whose proportion has to be known to complete the STANDARD KLKCTRlCAIv DICTIONARY. 437 measurement. There is a different system of naming them. Somedesignate by this title the two arms in parallel with each…
Electricity
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