Cheap Chinese plastic calipers that turns on automatically has a tendency to turn by itself when it is placed in a drawer. For that reason I designed this cap, that fixates the jaws of the caliper in place, so it can't move and hence can not turn on by itself. This cap is for a larger 150mm caliper - the jaws measure 28mm in width and approx. 34mm in height. Here printed in generic black PLA on an A1 Mini.

NOTE: I have added a version 2 of this cap (caliper_cap-Bodyv2.stl) which is a little shorter, so it fits calipers which has a little shorter jaw height than 34mm. The new one is 33mm and I recommend you use this instead of the original!