row_2 = row_1 + vertical_space/7; row_4 = row_3 + vertical_space/7; cv_in_1a = [left_col, row_1, 0]; right_rib_x = width_mm - 9.5/2 - right_rib_thickness - tolerance; // rib + half a jack col_right = width_mm - h_margin; // elevated sockets to fit in glide controls More mounting hole 4.3mm no annular Mounting Hole 6.4mm, M6, ISO7380 mounting hole 3.2mm m3 Mounting Hole 3.2mm, M3, DIN965 mounting hole.