noun
: a galvanometer in which the deflections of the needle or coil are read by means of a mirror attached to it that reflects a ray of light or the image of a scale
noun
: a galvanometer in which the deflections of the needle or coil are read by means of a mirror attached to it that reflects a ray of light or the image of a scale
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012