Indotech Devices Pvt. Ltd. Manufactures Moving Coil Rectifier Type Ammeter. Indotech Devices Pvt. Ltd. Is an ISO 9001:2008 certified company. Indotech Devices Pvt. Ltd. Supplies indicating test & measuring instruments. Moving Coil Rectifier Type Ammeter is meant for the measurement of AC voltage and currents. Moving Coil Rectifier Type Ammeter is the instrument which is fitted with full wave rectifiers to measure AC quantities. These are available in both 900 & 2400 movements. These meters are available for the measurement of mV, V, mA & A, KV which are calibrated in terms of PT ratio & high range ammeters in terms of CT ratio.