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BackLED, http://www.kingbrightusa.com/images/catalog/SPEC/CA56-12EWA.pdf 4 digit 7 segment orange common anode Single digit 7 segment LCD 3 1/5 digit reflective arrow bat + 7 + 8); // pot + led + switch? Col_right = width_mm - col_right + tolerance*4 + 8; //three knobs plus space between them left_panel_spacing = left_panel_width / 3 + tolerance*8; echo("Left panel:", left_panel_width, " with spacing ", left_panel_spacing); right_panel_width = width_mm - hole_dist_side - thickness; // How much horizontal space needed for left-hand and right-hand sub-panels left_panel_width = 40; // widest element is rotary, at 30mm right_panel_width = width_mm - thickness*2; union() { difference() { // Eat That Toast bog-standard example // Penny Arcade if(preg_match("@.*()@", $article['content'], $matches)){ $img = preg_replace("@height=\"\d+\"@", "", $img); $article['content'] = $this->get_img_tags($xpath, '//p[@class="Maintext"]//img[contains(@src, "joyimages")]', $article); } // XKCD (alt tags.