60mm Diameter Wheel for D-Shaft encoder

thingiverse

A person is approximately 60 millimeters in diameter and 18 millimeters thick, with a wheel that features 100 individual ridges, each measuring one by half a millimeter. There's a hole in the center for a six-millimeter D-shaped shaft from an encoder, as well as a recessed area that's ten millimeters in diameter and seven and a half millimeters deep, used to secure the right-angle encoder directly onto the edge of a printed circuit board.