Not being an expert on calibrating scales, but can you make the scale show the weight of a gallon of water as 8 pounds? because, not trying to be a pain, but generally one can say that a pound of water weighs about 8 pounds, but the scientist in me knows that a gallon of water weighs 8.34 pounds....That being said, I am just trying to learn (scale calibration) here, so in case you were going to account for that, I will just shut up and watch what is posted...