A Magnetic Level Indicator (MLI) is a reliable visual level measurement device used to indicate the liquid level inside tanks or vessels. It works based on buoyancy and magnetism—a float moves up and down with the liquid level inside a chamber, and magnets inside the float rotate the external indicator flaps to display the level accurately. Since it is non-invasive, the process fluid never touches the indicator. Magnetic Level Gauges are widely used in: chemical storage tanks separators and pressure vessels oil & gas process tanks water and utility tanks LPG / fuel tanks (based on suitability) pharmaceutical and industrial liquid containers They are best suited wherever continuous visual level monitoring is required.