I remember seeing a really old pneumatic remote for a TV a long time ago. It was basically a rubber squeeze pump (just like on a blood pressure machine) and a

I remember seeing a really old pneumatic remote for a TV a long time ago. It was basically a rubber squeeze pump (just like on a blood pressure machine) and a rubber tube connected to the tv. When you squeezed the pump, the pressure in the tube would click the dial forward one notch.