CESTEN GM-300A Onetestinc Geiger Counter Test

Hello everyone interested in measuring ionizing radiation Information: CESTEN GM-300A Geiger Counter: Glass J304 Window for beta particle Clicking sounds during measurement Calibrated with Cs137 662keV energy My Blog: http://dozymetria.wordpress.com IG: https://www.instagram.com/dozymetria FB: https://www.facebook.com/Dozymetria Thanks for watching