universal center finder
thingiverse
Inspired by the "Cylinder Center Finder" by abapemilo (https://www.thingiverse.com/thing:1605373) as well as the "Center Finder For Edges Set" by TikiLuke (https://www.thingiverse.com/thing:2199356), I created this universal center finder to have one tool for finding centers of both linear and circular surfaces. One side allows me to mark the center of cylindrical items by holding the 90° angle against it and drawing a line along the ruler. If flipped around, the little cylinders on the ruler can be held against the outer edges of rectangular items, with a small hole assisting in marking the center.
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