The Grainger G3269 Level Gauge is a liquid level indicator designed for use in industrial tanks and reservoirs. It features a 10 inch clear acrylic tube with colored float balls inside that rise and fall with the liquid level. The tube is mounted to a stainless steel frame that attaches to the tank. It has a maximum liquid temperature rating of 120°F and a maximum pressure rating of 15 PSI. The gauge provides a simple, visual way to monitor liquid levels at a glance. Its rugged industrial construction makes it well-suited for use in manufacturing, chemical processing, food & beverage, oil & gas, water treatment, and other industrial applications.