UMA dual ammeter & voltmeters are rugged and reliable instruments for measuring the current within the aircraft's electrical system. For easy of installation, UMA Amp meters use an external shunt to make current measurements. This 2-1/4 inch dual volt/amp meter (EDMO# 15-200-030) has a black & white dial markings with post terminal, measures up to 30 amps and 30 volts, has a moving coil movement, and 1C1 shunt.
