Tool for measuring the flat on the end of a single point threading tool. By Chris Stephens. 1:02 video:
https://www.youtube.com/watch?v=0Jq0eaQfLG0
Previously:
https://www.homemadetools.net/forum/...807#post137019
https://www.homemadetools.net/forum/...002#post100474
https://www.homemadetools.net/forum/...7894#post86435
