Compás
thingiverse
Simple compass, for precise assembly requires only 2 screws (3x12 and 3x15) of two M3 nuts with a self-locking feature, two M3 washers with outside diameters of 9mm and 12mm respectively, and one thumbtack. In the compas3D.FCStd file from Freecad, we can adjust the radios according to the chosen thumbtack.
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