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, easy installation, and clear level indication. The gauges come in various sizes to fit different diameter openings and tank capacities. They can help monitor liquid levels to prevent overfills or run-outs. The gauges provide an economical way to visually check fluid levels in drums, totes, and storage tanks.