Sliding contact Rheostat for use as series resistors or potentiometers open type slide wire type with a variety of resistance and current carrying capacity copper nickel alloy wire is oxidized to provided perfect insulation. Phosphor bronze contact provided on metal chrome plated slider rod give rapid and smooth adjustment. Three 4 mm socket terminals are provided, one at each end of the wire and the third at one end of the slider rod thus the rheostat can be used as potentiometer also. Resistance in on it. The end support are made of metal /Bakelite with provision of two holes for screw mounting. diameter 43 mm. all ranges are available