I snatched these from a thread of guys showing off some of their items collected from the Cold War. If you are a certain age, you will recall seeing this stuff in places locally meant to provide shelter from the radiation of the falling Soviet Nukes. You can still see signs in some small towns on buildings designated as fall out shelters. The local town still has the fall out shelter sign hanging on the outside front entrance. Makes me nostalgic.
Radiation dosimiter pen.