What is the difference between scales and balances, and how do they function in measuring weight accurately?

Scales and balances are both tools used to measure weight, but they work in slightly different ways. Scales typically use a platform or hanging mechanism to compare the weight of an object to a known standard, such as a set of calibrated weights. Balances, on the other hand, use a beam or lever system to compare the weight of an object to a counterweight. Both scales and balances rely on the principle of equilibrium to accurately measure weight.