I like sltench's screw sizer but I wanted something smaller and basically rectangular so I moved the grip to the upper left corner and pulled off the second handle. I was also a little worried about the strength of the last sizing pin so I made it stronger. This is for anyone who wants a version like that.

This one is printed with two filaments, the design makes it very simple to pause the print and change filaments to get nice clear text labels.

Creality

Ender-3 v2

No

No

0.16mm

25%

Easy print, but keep the resolution high or you'll make the test holes too small.