Scales are devices used to measure weight or mass. They come in various forms, including mechanical and digital types, and are commonly found in homes, kitchens, and medical facilities. The basic principle involves balancing an object against a known weight to determine its mass. In addition to their practical uses, scales also play a crucial role in various industries, such as shipping and healthcare. For instance, medical scales are essential for monitoring patient health, while kitchen scales help in precise cooking measurements. Understanding how to use scales effectively can enhance accuracy in both personal and professional settings.