Caliper from carpenter's square - adapter

It works with most of this type (like on pics) carpenter's squares Screws from top are M4 size, to reduce looses if your carpenter's square is lower high.It don't have to be headless screw. Can be ordinary M4 or imperial size replacement screw.Holes are without thread, you tap it by screw itself.On the bottom is a slot for metal washers (DIN125-A2,2 (M2)), that prevent plastic to wear off.Slot is tight so you may struggle to place washers, but it have to stay there forever :). I heat washer, it went nice.You can use it without washers as well, no problemo.I have printed it with:layer high 0,24 mm0,4 mm nozzle, 3 walls.top/bottom 8 layersNo supports.No infill.