The primary use of a scale is to measure weight. Scales are commonly found in various settings, including homes, restaurants, and medical facilities. They enable individuals to accurately determine the mass of objects or body weight, which is crucial for tasks such as portion control in cooking, monitoring health and fitness, and conducting scientific experiments. Different types of scales exist, from digital to mechanical, each providing measurements based on respective technologies. Accurate weighing is essential in numerous fields, including medicine, chemistry, and nutrition, highlighting the scale's importance and versatility in everyday life.