Vashishat G.M counter is suitable to measure radioactivity counting utilizing geiger muller tubes or solid state radiation particle detectors and as a general purpose millisecond digital timing device with manual setting and electronic display. The bright 7.6mm height, 6 digit L.E.D, making it suitable for individual use or as part of experiment physics lab. In the radioactivity an integral pre-amplifier is provided for GM detectors and an adjustable 300 to 1000V. E.H.T supply for G.M tubes. In the timing, the display reads in seconds, i.e from 0 up to 99.9s, and provided front panel setting. Time can be adjusted in minutes/hours by Programmable setting switch.

• G.M. counter  complete with in-built power supply EHT 300 -1000 V.
• Operating voltage 220V 50Hz., power consumption 8W approx.
• STOP, START, RESET switches. Last reading store facility.
• Counts capacity 6 digit counting system
• Preset time 3 digit programable timer with membrane keys for settings.
• 3 ½ Inbuilt Digital Volt Meter for GM Tube Voltage.
• G.M. Tube end window G.M. tube mounted in acrylic stand.
• With 'aluminimum' absorbents.
• Radioactive source one radioactive source Beta or Gamma (in lead container and wooden box).
• G M Counter dimensions  365 x180 x145 mm.
• Supplied in corrugate box  with manual.
• Total weight of the instrument is 5.5kg. (approx.)