Galvanometer

[Fr. galvanomètre, from galvan is me, and Gr. metron, a measure.] (Electricity.) An instrument for ascertaining the presence and amount of a current of galvanic electricity. A conductor traversed by a current, and placed above a magnetic needle, but very near to it, and parallel to its axis, causes the needle AB Fig . 1115. of Fig . 1116. TANGENT GALVANOMETER.