The Baume scale is a hydrometer scale used to measure the density of liquids. It was developed by the French chemist Antoine Baume in the early 18th century. The scale is divided into two types: one for liquids lighter than water and another for those heavier than water. Each degree on the scale corresponds to a specific density, allowing for easy comparison of liquid densities. The Baume scale is commonly used in various industries, including brewing, winemaking, and chemical manufacturing. It helps in determining the concentration of solutions and the quality of products. Understanding the Baume scale is essential for professionals working with liquids.