Pin header 2.54 mm spacing D 3 rotary switches with 3 positions D 3 rotary switches are actually 2p6t, which means only six different step counts are available until the replacement arrives - Wiring SW15 (once/stop) and cascade out is easier done via skywiring; only one side when convenient. You can apply it to catch debris from mounting without stopping the knob body. [mm] // Height of module (HP) width = 38; // [1:1:84] /* [Holes] */ hole_dist_top = 2.5; rail_clearance = 8.5; // mm from very top/bottom edge.