Designed specifically for a Mitutoyo 6in caliper, but should work fine with most similarly-sized calipers. The jaw sizes are different enough as you go up in sizes that it does get less stables with larger calipers

I've made a few iterations of these for friends and coworkers. Makes a nice desk widget in an engineering office :) If you'd like more info on the constraints I used for the Generative Design and such, you can find a bit of my thoughts on the design here.