The Grainger website features liquid level gauges for drums and tanks. These gauges are made of galvanized steel or HDPE and use a rod or float mechanism to indicate the fluid level inside a container. Key features include corrosion resistance, chemical compatibility, visibility of fluid level, and durability. The gauges come in various sizes to fit different diameter openings and are designed for use with water, chemicals, petroleum products and other liquids. They provide an accurate, reliable way to monitor liquid levels in drums, totes and storage tanks.