Dang it I can't find my book....but it does have where you measure inches around right behind the front legs and it equals so many pounds. I know up to 60 lbs its fairly on.....after that I really can't hold and get a weight. Also to get a exact weight I found this idea years ago.....you get a piece of ply board and under all 4 corners put a human bathroom scale under.....not digital kind. X it out and put your goat on. Then go around write the four weights down and add. Seemed like a good idea and way cheaper then a livestock scale.