Each encoder has 20 detents per revolution with a rotational torque of detent of 1 oz.-in. Operating life is 50,000 cycles, and the optional SPST momentary switch’s lifespan is 15,000 actuations.

That’s the idea behind this Arduino-based measuring jig for fabricating parts for a CNC build. When it comes to building on the cheap, nobody holds a candle to [HomoFaciens].