... an electronic intelligent single-phase AC/DC meter calibrator designed according to related national standards ... ammeter, voltmeter, milli-ammeter, milli-voltmeter, frequency meter. This calibrator is composed of 3 parts: signal ... of single-chip,precision power supply and standard meter system. With standardized cabinet and featured by ... × 328long×131high;3.16. Weight: 12Kg digital meter calibrator