If you are wanting to detect beta and gamma rays inexpensively and with reliability, this super sensitive Geiger Counter Package A is for you! Contains a fully assembled and tested C8600ASB Geiger counter, a G21689 CTC-5/STS-5 sensitive Beta Gamma Geiger tube, 2 connecting clips for tube and a G21144 Geiger counter check source radium watch hand in vial.
To use, simply push clips on tube, connect red wire to clip on (+) of tube and black wire to clip on (-) of tube. Attach a 9V battery (not included) to snap. Turn switch on and bring vial near tube. You will hear clicks and see flashes of red light as it detects the watch hand. No case or 9V battery included, however everything else is included so you can be detecting radiation in minutes. A $70 value.