This 240V.AC. mains powered GEIGER COUNTER by IEC uses a remote GM tube in a holder connected by standard BNC plug.
Ideal for classroom use with sloping front panel and large red LED display. Other models are available for portable use and with inbuilt tube. The large sensitive tube is of the 'thin mica window' type and detects Gamma, Beta and high energy Alpha particles.
Tube voltage is adjustable to 600V and inbuilt loudspeaker with volume control permits counts to easily be heard. Counts can be selected to be continuous, counts over preset times, or Rate displayed as counts/second.
Instruction Sheet included.