New and Improved Geiger Counter – Now With WiFi! - Electronics-Lab.com
DIY Geiger Counters in Japan - Make:
DIY Geiger Counter Is Sure To Generate Clicks | Hackaday
Geekcreit Assembled DIY Geiger Counter Kit Module Miller Tube GM Tube Nuclear Radiation Detector Geekcreit for Arduino - products that work with official Arduino boards - EuDirect Shop