These are meant for the measuring of DC voltage and current. All these meters are fitted with D'Arsonval movement resulting in linear scale and can be supplied with rectifier for use on AC. AMMETER: Range 50uA to 30A Self-contained and higher ranges by use of external resistance box. Our Moving Coil Meter is highly demanded in the global marketplace. Our moving coil ammeter is available at the most reasonable rates. We are India̢۪s no.1 moving coil voltmeter manufacturer and exporter.