Geiger Counter, Digital (10-710).
Geiger counter with digital readout. Sensitive to low level alpha, beta and gamma radiation, this rugged, compact counter has a 7.5 and 60 second interval. The digital readout can be converted to mR/h with a scale factor printed on the instrument.
Alternating Current power source is supplied. Optional operation is with four internal AA alkaline batteries which are not included.
The Geiger Counter
Determining the Electron Charge by the Millikan Oil Drop Experiment
Forensics Lab Supply Number 3210710.
Formerly Grau-Hall Corporation dba Grau-Hall Scientific.
Purchase orders may be sent by email to staff @ grauhall.com or by FAX to 916 379 9639 or by mail to P. O. Box 279592, Sacramento, CA 95827-9592.