Geiger Counter

This DIY Geiger counter clicks and flashes an LED each time it detects a radioactive particle. It works with most common Geiger–Müller tubes, and easily connects to radiation rate meters, data loggers, true random number generators, and the Radiation Network’s GeigerGraph software. Share your radiation readings with the whole world! Read more »

Ice Tube Clock Kit

Build the most unique clock on the market, featuring a retro Russian display tube and a clear plastic case so you can appreciate the inner workings of this fantastic gadget! Read more »