In a pinch I wonder if I could use this for my end of the world kit. - AK

Commercial Geiger counters can cost hundreds of dollars. With this Geiger Counter Kit you can build your own at a fraction of the price! This easy to solder kit can be built in an evening and it works just like you think it would; clicking and blinking in the presence of radiation. Is grandma’s dish collection radioactive? Do bananas give off radiation? Are your granite table tops giving off gamma rays? After you build your own Geiger Counter you’ll be able to find out! Serial logging function lets you easily track exposure over time and the mute button lets you silently detect radiation. A must for every mad scientist! ***** WARNING ***** This Geiger Counter kit is for EDUCATIONAL PURPOSES ONLY. Don’t even think about using it to monitor radiation in life-threatening situations, or in any environment where you may expose yourself to dangerous levels of radiation. Don’t rely on the collected data to be an accurate measure of radiation exposure! Be safe!