Circle fit tests 6mm to 18mm by.2 steps.

Summary Will it fit? Let's check. With these tools you can see what your printer will make before you design holes. Do you need a loose fit? Snug? Hammer fit? Do you want to make a hole that a bolt will thread into? These test sticks go up by .2 mm per hole so you can find any type of fit for any round object from 6 mm to 18 mm. Don't bother printing them till you got your printer dialed in though. Write the sizes on them with a marker. See my other things for my edge fit tests and nut fit tests. This is a tool not a test print.