Centerline finder for caliper

thingiverse

I created this centerline finder because I couldn't measure a particular hole accurately. To make a set of calipers, print two of these. You will need four M3 screws. They are designed to fit my caliper tightly, so you may have to file them down to ensure a proper fit. Keep in mind that this part is not calibrated, so the measurements you get will be highly dependent on the precision of your 3D printer.