Schempp-Hirth rotary main switch, originally mounted in SH gliders.
Switches with losing battery connection. Use a condensator in the circuit, for example Sotecc power condensator [USV2.1].
Amp rating (amps): 4A
Switching action: Single Pole Single Throw (SPST), 1 pole 6 way.

Dimensions (body):
L= 23mm
W= 14mm
H= 14mm
Total L=51mm
Cutout: Ø6mm