Rotary switch
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A switch that is operated by turning a knob.
"A close-up of the very compact desk unit for control of the East Finchley programme machine from Leicester Square; the rotary switches at the top are used to set up the train number of any service to be added or cancelled."
Example
More examples"A close-up of the very compact desk unit for control of the East Finchley programme machine from Leicester Square; the rotary switches at the top are used to set up the train number of any service to be added or cancelled."