Alright, so you have a scale that looks like this:
You want to use this scale to measure the weight of various widgets you have that could weigh as little as 1oz, or as much as 1000 ozs. Now you want to purchase a set of weights so that you can get the weight on any of these to the closest oz. You don’t have much money, so you want to buy the fewest number of weights possible…but you have to be able to measure all the individual weights that might fall in the 1-1000 range.
How many weights do you need, and what units should they be?