Wanda make Thumbwheel, Pushwheel, Coded Switch
Pushwheel Switch/Coded Switch is a setting switch that converts the numeric value selected by turning plus and minus buttons on which numbers are written into a binary, decimal or other code using the combination of ON and OFF signals for multiple contact circuits and that outputs the resulting code. They can be on a mechanical or an electronic device. These are sometimes called digital switches, and you can see them in action on a variety of different devices. Some of them are very simple, while others are going to be quite a bit more complex.