Catherine Holloway created this board to interface Mitutoyo dial indicators with a Teensy:

Teensy Mitutoyo Interface

Mitutoyo dial indicators can measure small displacements down to micron levels. I use them to calibrate motors used in quantum optics experiments, where every micron is several femtoseconds in the life of a photon.

The design files and source code are available on GitHub:

CatherineH shared the board on OSH Park:

Teensy Mitutoyo Interface