Quality rotary switches that use different light colours to designate differing positions of the switch.
Rated to 20 amps @ 12 volts, they are suitable for so many purposes around a boat that the list is endless.
Dimensions:
Body width: 24mm
Body height: 34mm
Knob dia.: 30mm
Intrusion: 67mm
Switches can be turned off, on or turned on (M) which is momentary.