... , whatever electronic or mechanical type or electromechanical, active meter or reactive meter.2- Simultaneously test meters with same specifications but different ... -load test/ start test/ basis errors test/ voltage influence test meter constant test/ meter reverse turn test/ energy counting test etc.6 ... 1m A, 5m A, 10m A, 25m A, 50m A, 0.1A, 0.5A, 1.0A ,2.5 A,5 A,10 A, 20 A,50 A,100 A,Voltage/current ...