1500mm Manual Liquid Level Ruler for measuring

Danclan manual liquid level ruler for measuring LN2. This 1500mm liquid level meter can provide an easy measurement for a liquid nitrogen tank and cryogenic freezer. Place the ruler to the bottom of the container, hold for a while untill you can see a frost line. There are 2 models for liquid level ruler, 1500mm and 1000mm, and the logo on the ruler can be customized according to users' demand.