1000mm High precision Liquid Level Ruler for liquid nitrogen

Danclan high precision liquid level ruler for measuring liquid nitrogen manually. This 1000mm liquid level meter can provide an easy and convenient measurement for a LN2 tank and cryogenic container. Place the ruler to the bottom of the device that need to be measured, and hold for a while untill you can 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 users' demand.