Thickness Caliper

Thickness gauge that I made up for a quick reference of the thickness of the wall on bowls that I turn on a lathe, but could be used for thickness on most anything you'd like. The screw tightens down enough to keep the caliper stiff but still movable, so it will keep its gage size when pulled off of whatever you're referencing. The part is symmetric, so whatevery size is on one end will be equal on the other end.