A Balance Scale is a tool used to measure the weight of objects by comparing them against a known weight. It typically consists of a horizontal beam supported at its center, with two pans hanging from either end. When an object is placed in one pan, the scale will tip until the weights in both pans are equal, allowing for accurate measurement. Balance scales are commonly used in laboratories, kitchens, and educational settings. They help demonstrate the principle of equilibrium, where the forces acting on the scale are balanced. This concept is fundamental in fields such as physics and chemistry, where precise measurements are crucial for experiments and calculations.