We are building a split keyboard with low profile switches.

Since I wasn't able to find a low profile key switch tester, I designed one by myself.

This tester is tested for working with Gateron KS-33 Low Profile switches, but should generally work with all kind of low profile switches.

I uploaded the FreeCAD source files: it's quite easy to change the size of the tester (or the space between keys). For my final version, I decided to go with the version that uses less material.

The updated version allows using keycaps.