These are some standard calipers with 1/16 and 1/4" markings. The markings are .4mm wide so someone let me know if they are printing well or not. I hope to upload these as a configurable model soon so you can select units.This is a work in progress, feel free to send me suggestions for improvement! I think the next step for these would be to add a dial indicator for increased precision. I will start working on that as soon as I know they function well in their current state.**Update I fixed the tail end so that it now functions as a depth gauge.Just print both sides of the calipers and they should assemble easily.