Galvanometer

n.

1.

(Elec.) An instrument or apparatus for measuring the intensity of an electric current, usually by the deflection of a magnetic needle. Differential galvanometer See under Differental, a. Sine galvanometer (Elec.) a galvanometer in which the sine, cosine, or tangent respectively, of the angle through which the needle is deflected, is proportional to the strength of the current passed through the instrument.

Noun

1.

galvanometer - meter for detecting or comparing or measuring small electric currents

astatic galvanometer, meter, moving-coil galvanometer