The GLL43 is a mechanical level gauge designed for vertical installation from the top of a tank. As the liquid level changes, a float follows the movement, and a magnetic coupling transfers this motion to an analog dial indicator. The gauge is completely sealed, eliminating the risk of tank contents leaking through the gauge’s header. It is suitable for fluids compatible with its construction materials, which include a zinc alloy header, 316 stainless steel guide rails and foot bar, brass spiral drive, polypropylene float, and a polycarbonate dial capsule. Additionally, the GLL43 can be equipped with an electrical interfacing dial indicator and indicators with set switching points.