TIMER/COUNTER/GEIGER

Compact unit with crystal controlled accuracy and large 6 digit LED readout. Provides timing up to 999.999s in periods of 10ms. Provided with both make and break modes for stop and start, memory and re-call facility, integral 500V d.c. supply for Geiger tube, integral loudspeaker and muting switch, 12 volt lamp output for photo gates.