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What is a level gauge? A level gauge is an industrial instrument used to measure the height of liquid inside a container. This is a Lantian level gauge, designed for tanks. We can see that it has a display screen and an external carbon rod. There is a float on the carbon rod, which corresponds to measuring the liquid level and water level. You can not only check the tank’s liquid and water levels through the display screen, but also remotely monitor the tank’s liquid and water levels through