LedEx Rotary Switch 13-001, 3 Pos, 1 Wafer, 1/4" Shaft x 3/8", 30 Deg/Pos, 3/8-32 Thread

Bottom Of Wafer
Pos 1 (1-2) 
Pos 2 & 3 (1-3)

Top Of Wafer
Pos 1 (1-2)
Pos 2 (1-3)
Pos 3 (1-4)