I got a new scale today. I have suspected for a long time that my old one was showing me less than my actual weight. Well, my suspicions have been confirmed and the new scale shows that I actually weigh 3 lbs more. Therefore, I have gone back to all of my historical weights and upped them by 3 pounds and I will use the new scale going forward.
The new scale, from eat smart, has water, fat and muscle percentages as well as showing my weight in .2 lbs increments instead of .5 lbs increments.