Noun
A contraction of amperometer or amperemeter.
Source: Webster's dictionaryAmmeter from the old Penn Station Terminal Service Plant in New York City Zero-center ammeter An older moving iron ammeter with its characteristic non-linear scale and with the moving iron ammeter symbol mounted on a small form factor PC. Source: Internet
A portable hand-held clamp-on ammeter is a common tool for maintenance of industrial and commercial electrical equipment, which is temporarily clipped over a wire to measure current. Source: Internet
Ayrton shunt switching principle To make a multi-range ammeter, a selector switch can be used to connect one of a number of shunts across the meter. Source: Internet
Ammeters are designed for a low voltage drop across their terminals, much less than one volt; the extra circuit losses produced by the ammeter are called its "burden" on the measured circuit. Source: Internet
Digital ammeter designs use a shunt resistor to produce a calibrated voltage proportional to the current flowing. Source: Internet
L. A. Geddes, Looking back: how measuring electric current has improved through the ages, IEEE Potentials, Feb/Mar 1996, pages 40-42 Types Moving-coil The D'Arsonval galvanometer is a moving coil ammeter. Source: Internet