Instrument consists of power supply for G.M. Tube with digital read out
meter. 6 digit counting system with its power supply. Controls for reset, start and stop through on panel. One pre set-able timer with 3 digit display and thumb wheel switch. Complete with G.M. tube, mounted in acrylic stand. One radioactive source in lead container. Al. absorbers sheets, Digital multimeter to read the G.M. tube voltage.
