This is a remix of Caliper holder/hanger for Multiboard. This caliper holder also has a tiny built-in box for storing extra batteries. The box is dovetail with friction fit. If your printer isn't dialed in, you may simply have to scale the lid up or down very slightly for fit but usually this isn't needed.
I remixed this project to fit a pegboard. I also resized it for a looser fit with the caliper. As well as flipped the box so the cover slides up instead of down. Finally i moved the arms down a bit to center the caliper when it's haning.
Print:
0.2mm layer, 3 walls, 15% infill