This is a very nice design. Unfortunately it didn't fit my calipers by a very, very slim margin. I don't think I'm going to spend the filament for another 7-ish hour print though. Fortunately I think I can probably sand or file it a little to resolve my own problem. I would make this suggestion back to the author and as a consideration for someone wanting to print one: If it was slightly larger in the interior, say perhaps another 1 to 1.5 mm's worth of clearance, I think it would fit marvelously. And one other observation to make, I have probably 6-8 pairs of calipers. The only one that came close to fitting this case is the one in my photo, which is also the one most similar to the author's. Be aware that there are some slight differences in the shape of the caliper's display head that can affect whether your calipers will fit into the box or not. Frankly, it would only take a few small tweaks to make the design a lot more universal and fit a wide range of calipers. As it it now though, please be aware of these issues and your mileage may vary!
If I were printing this again I'd resize it slightly larger in the X and Y dimensions (not height / Z) by about 1 to 1.5 mm to get a better fit.