X-ray Jar _top_ Guide
Here is how to make one, how it works, and why you need three of them in your pantry right now. An X-Ray jar is a standard glass Mason jar (or any clear glass container) that has been painted black— except for a single, narrow, unpainted vertical strip.
Despite the sci-fi name, this isn't radioactive, and it doesn't require batteries. It is a simple, 5-minute DIY project that allows you to see the contents of a sealed container without opening it. x-ray jar
The X-Ray jar is low-tech, bulletproof, and genius. It turns a $1 thrift store jar into a diagnostic tool for your survival food. Here is how to make one, how it
That’s it. No electronics. No lenses. Just paint and glass. Here is how to make one