Whether it’s the “Fukushima plume” or giant monsters on your mind, the classic Civil Defense CDV-715 Geiger counter has a perfect retro-style case to house a modern, sensitive digital Geiger counter. Replace its guts and add a new analog-digital LCD meter and you're ready to detect particle flux from radioactive lizards. Make:'s go-to Geiger guy John Iovine shows you how.
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