Special Features:

Galvanometer described here is system assemble only w/o scale, illuminating device or case

Properties:

An instrument which shows the presence of an electric current and/or indicates the relative intensity thereof, but which is not calibrated in actual values. The instrument may or may not be connected into the circuit. The detection of the current is accomplished by measuring the mechanical motion produced by the electromagnetic or electrodynamic forces set up by the current. See also ammeter; meter, arbitrary scale; and meter, null.