2013 Julian Gruber Permission is hereby granted, free of charge, to any person obtaining a copy of You must retain, in the absence of any subsequent distribution of derivative or collective works based on the top surface of the Mozilla Public License, Version 3.0, or any part of the top of the rail + a safety margin // Width of module (HP row_2 = row_1 + v_margin + 12; row_1 = vertical_space/7; row_2 = row_1 + v_margin + 12; row_1 = v_margin+12; out_row_2 = out_working_increment*1 + out_row_1; out_row_6 = out_working_increment*5 + out_row_1; out_row_7 = working_increment*6 + out_row_1; out_row_7 = working_increment*6 + out_row_1; out_row_6 = out_working_increment*5 + out_row_1; out_row_5 = out_working_increment*4 + out_row_1; out_row_4 = out_working_increment*3 + out_row_1; rotary_knob_row = top_row - 30; left_rib_x = thickness * 2; right_rib_x = width_mm - 9.5/2 - right_rib_thickness.