This is called a rotary encoder [1] and is still common in various control knobs on electronic devices. [1]: https://en.m.wikipedia.org/wiki/Rotary_encoder htt

This is called a rotary encoder [1] and is still common in various control knobs on electronic devices. [1]: https://en.m.wikipedia.org/wiki/Rotary_encoder https://en.m.wikipedia.org/wiki/Rotary_encoder