Calibration Ruler Hole Size Checker

I just made this so I could see the percentage of shrinkage for holes in designs. The ruler should be 3mm thick.

If you remix this or make alterations, please upload them back with all original solid works files so that everyone can use them, and people that don't have solid works can then benefit from the modifications,
Thanx

I Always add the original creation file not just the stl, so if people want to play with the design they can.