Print In Place Compass

A small pocket-sized 115mm x 25mm x 3mm compass. Assuming your printer can make tight enough tolerances, this compass works as a print-in-place model.  Its holes are spaced every 5mm starting at 15mm from the center. It also includes a handy cross-shaped viewing window. User experience may vary, but I think the tolerance for rotation lies in a healthy middle ground for most printers.