Miller Electric Mfg. Co., with headquarters in Appleton, Wisconsin, manufactures arc welding and cutting equipment designed for manufacturing, fabrication, construction, aviation, motorsports, education, agriculture and m......Miller Electric Mfg. Co., with headquarters in Appleton, Wisconsin, manufactures arc welding and cutting equipment designed for manufacturing, fabrication, construction, aviation, motorsports, education, agriculture and marine applications. Wholly owned by Illinois Tool Works (NYSE: ITW), the company maintains its global leadership by setting the industry standard for reliability, quality and responsiveness. Its famous tagline, “The Power of Blue®,” is inspired by the blue color of Miller equipment.