Hole diameter and length measurement tool (ruler/guide)

Often prints don't come out the exact size of the design, and they need to be scaled and reprinted. Print this tool and use it as your measure guide to find a more accurate starting point. Holes range from 2mm to 8mm. Steps are in 1mm graduations (1mm-12mm), and 3mm in length each. Overall dimensions are 12mmX76mm (approximately 1/2"X3" - if you feel like being English).

This thing was made with Tinkercad. Edit it online https://tinkercad.com/things/0vtkvtcJc9o