This is my attempt to create a base shape to work with for a battery cover. The files here are not my end goal; The battery contacts on my calipers are broken, and this cover is intended to be a starting point for repair. Namely, I intended to further modify this cover and attach a real coin cell holder on top, and have contacts that reach into the calipers in place of the original broken ones. Use your own judgement for print settings. It's pretty much a solid, and there are some very fine details I tried to capture. I include not just STL/STEP, but also the FreeCAD file, so that this can be modifiable for someone else.