DIY Geiger Counter, Easy to Assemble Compact Size PC Data Acquisition Nuclear Radiation Detector High Accuracy with USB Cable for Cosmetic Detecting: Amazon.com: Industrial & Scientific
DIY Quick'n'Dirty Geiger Counter | Hackaday.io
MyGeiger 3 PRO DIY Geiger Counter Kit Gamma Radiometer Dosimeter without tube | eBay
DIY Geiger Counter With an ESP8266 and a Touchscreen - Electronics-Lab.com