1500mm High quality Liquid Level Ruler for liquid nitrogen

Danclan Liquid level ruler for measuring liquid nitrogen manually. This 1500mm high quality liquid level meter can provide an easy measurement for a LN2 tank or cryogenic container. Place the ruler to the bottom, and hold for a while untill see a frost line. There are two models for liquid level ruler, 1500mm and 1000mm, and the logo on the ruler can be customized by demand.