When you hear the word "scale," what kind of instrument do you picture? Some people imagine a bathroom scale, which has a large platform that they can stand on. Other people may imagine a food scale. Those people likely have a background in food service and have used a food scale at some point. If you've worked in a lab, you might picture a smaller scientific scale. The point here is simple: there are many different scales, and people use them in many different ways. We will seek to take a balanced approach and write about many kinds of scales on this website.