... , lower the machine tube head cantilever to its lowest position, and lock it up for the convenience and safety of machine movement ... Meter, Power Indicator, Warning Indicator, Power Adjustment Knob, mA Selection Switch, Output Switch, High Voltage Selection Knob, Maximum Ratings Table, Ammeter, Time ... ratings kV S mA 0.06-1.0 1.2-2.5 3.2-6.330909090509080/7070// 1.Power requirements Voltage:180-240V ...