Sculptor's Calipers
grabcad
Large sculptor's calipers (288mm overall). Tongs are symmetrical - print two of the same part to make the set. Assemble using 1/4-20 (imperial) hardware. 6mm hardware should work, too - or you can modify the design to suit your needs.Update - added tensioning dial (knob) for use with a square type 1/4-20 nut to be glued in after printing. I also glued the screw with a fender washer in place on one of the tongs, fixing them in place, and leaving the tensioner nut to move freely. Works well for locking measurements in place.
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