"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." Geiger counters are used to detect and measure levels of radioactivity. Scientists invented the ...

Which Geiger counter is best? If you want to monitor radiation levels from a specific source, you need a reliable Geiger counter. This tool can warn you when there is radiation, as well as measure it ...

I got one today Ludlum 3 with the 44-9 probe. Anyhow coolest toy yet. I notice it clicks on occasion (background radiation) Some times I notice like a group of clicks all come in once in a while, is ...