Holder for speedsquares, should fit fit a lot models, but you can customize it with OpenSCAD.
To mount it to the pegboard you can use the normal hook or a version for the T-Nut system from 6d6178 (https://www.printables.com/de/model/228663-skadis-t-nuts-mounting-system-for-ikea-skadis-pegb). You may use other T-Nuts compatible with the system from 6d6178. The prebuild versions are for T-Nuts with 2, 2.5 and 3mm screws.
I printed it with PLA+, 15% infill and 5 perimeters.
The prebuild stl-files are for my speedsquare from MAISON, but you can customize this easily for your needs with OpenSCAD, the file is also attached. You will need the great BOSL2 - library for OpenSCAD (https://github.com/BelfrySCAD/BOSL2).
The author marked this model as their own original creation.