SIGHT GLASS EXPERTS L.J. Star offers a full line of industrial sight glasses, gauge glass, sight flow indicators, and related products for chemical and pharmaceutical applications. Our Metaglas is the #1 selling fused sight glass, proven in thousands of installations around the world. Unlike some other sight glasses, it meets stringent DIN 7079 and DIN 7080 quality standards, and has been tested and proven to meet The USP Type 1 standard.
