2-3mm Gauge

This is a simple gauge for posts and holes perpendicular to the print plane, and holes parallel to the print plane. Very useful for:
* Determining the right size for self-tapping screws
* Calibrating your 3D printer
* Determining the correct tolerances for clearance, transition and interference fits

I recommend printing at 100% infill if you are trying out screws, or print with the same settings as the model you want to try them on.