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How To Build a Pocket Ionizing Radiation Detector (PIRD)
How to build a pocket radiation detector or “PIRD.” The parts for this radiation detector can all be salvaged, but building this will require steady hands and a lot of patience! It is all powered by a single AA battery too.
This is a “clicking” radiation detector, unlike many other DIY versions without a Gieger-Muller tube out there. With all the crap going on in the world right now, this would be a great project to get done sooner rather than later.