Audio Jack, 2 Poles (Mono / TS), Switched T Pole (Normalling) | | | R8, R10, R12 | 3 | A1M | \*\*Potentiometer, 9 mm pots, you're on your own! The jacks, like the SPDT switch, needed a nut behind the panel design and includes 2.5mm centerward shift for input and output jacks output_column = width_mm - hole_dist_side - thickness; left_panel_spacing = (left_panel_width) / 2.5; slider_spacing = 12.5; // space between them right_panel_width = 12; // overkill; currently three 3.5mm jacks needing 8mm //calculated x value of exact middle of panel after deducting left/right sub-panels slider_center .