1. The instrument provides 6-gear output current selection and an automatic gear. The maximum output current is 10A 2. It is applicable to inductive test objects such as transformer, mutual inductor, reactor, generator, motor, etc., and can also be used to measure test objects such as switches, copper bars, contactors, relay contacts, metal wires, cable accessories, etc 3. With perpetual calendar, 99 groups of data storage, automatic temperature conversion and other functions, no data loss after shutdown 4. A printer can output and print test data 5. Combined with precise electronic measurement technology, the instrument has high accuracy, wide measurement range, and convenient operation. It can achieve rapid measurement of transformer sensitivity, voltage, and transformer resistance.