... Checking commonly used instructions instrument, industrial frequency and DC digital instrument, transmitter and electric energy meter, etc ... , 0.45, 0.5, 0.6, 0.75, 1, 1.5, 2, 2.5, 3, 4.5, 5, ... 150, 200, 250, 300 mA: 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 5, 7.5, 10 ... 2, 0.25, 0.3, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 5, 7.5, ... .05 (0.02) %; Full range of dc output stability 1 minutes full range of output value≤±0.01% ...