Rotary wafer switch, from 1 pole to 7 poles.
Main items:
1) 36 degree MU-MA(b) 
2) 30 degree MU-MA(a)
3) 45 degree MU-MA(c)
a) 60 degree MU-MA(d)
4) 15 degree MU-MG
1) Maxim working voltage: 300V
2) Current: 2A
Mounting detail: 
1) Imperial: standard
2) Bush: 3/8" x 32TP
3) Shaft: 0.25"
4) Nut: 0.525" A/F