WWII escape button compasses for captured soldiers.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...1_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...n_compass1.jpg
Fullsize image: https://diqn32j8nouaz.cloudfront.net...2_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...n_compass2.jpg
More: https://www.paratrooper.be/articles/escape-compasses/
Previously: https://www.homemadetools.net/forum/...713#post167218
