Arcade Twist Button Dial for MAME games

This is a 3-in-one button dial that allows a player to use one hand to control both left/right rotation of a turret or arm as it is twisted accordingly... and also fires if you press it down.

This short video shows assembly and action:

https://youtu.be/I34hM2YKkFE

This is not a quadrature-encoded spinner nor an 8-directional knob! It is simply a bipolar toggle dial with a push button action built in as well. Ideal for MAME versions of Ikari Warriors, Tron and many others.

The hol