Weighing The World
Scales are used everyday throughout the world in a wide range of industries. From the raw material used in the products around us, to the food that we buy at the grocery store - almost everything around us was weighed using a scale at some point.
Scales and other measuring devices come in a wide range of accuracy classes. For instance, most deli scales are accurate to only a few grams while a diamond or jewellry scale is typically accurate to a few milligrams (0.003g). For food portion use, a deli scale measures weight accurately enough to make your sandwiches, but if you had to measure something like gold or platinum, you would want to use a jewellry scale.
But how do you know if the scale you are using is accurate? If you check the various clocks around you, you might notice they don’t all agree with each other, with some more accurate than others. Th