👉 A minometer is a device used to measure the diameter of a substance. It consists of a tube that has a small diameter and a glass capillary tube attached at both ends. The smaller diameter part of the tube is filled with water, while the larger diameter part contains a liquid. When the liquid in the smaller diameter part touches the surface of the glass capillary tube, it will flow out slowly due to the force of gravity. This process is called evaporation, and the volume of the