TheCryogenic measuring stick liquid level gauge is used to measure the amount of liquid nitrogen in the liquid nitrogen container. It is made of special low-temperature resistant materials and can accurately measure the height of the liquid nitrogen in the container, thereby achieving the purpose of measuring the volume of liquid nitrogen in the container. When in use, insert the liquid level gauge straight from the mouth of the container to the bottom of the container and keep it still for 5 seconds. Then draw out the ruler and observe that the length of the frost on the insertion end is the height of the liquid nitrogen level in the container, and the remaining amount of liquid nitrogen in the container can be roughly estimated.