Tree bark thickness gauge.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...e_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...epth_gauge.jpg
Previously:
https://www.homemadetools.net/forum/...743#post159676
https://www.homemadetools.net/forum/...179#post172530
https://www.homemadetools.net/forum/...597#post166880
https://www.homemadetools.net/forum/...151#post120966
https://www.homemadetools.net/forum/...958#post119947
