The measuring tape picture reminds me of how big somebodies waist is. The measuring tape is very confusing to figure out how to use it, and to use it you have to start at zero and rap it around your waist and wherever the metal piece comes to that's how big your waist is. If someone wanted to lose weight and they just went by their pant size then they would use the measuring tape but if they wanted to go by how much they weighed then they wouldn't use the measuring tape and they would probably use a scale.
