Originally Posted by Choccy
That trick with the scales does not work as you muscles will take some of the weight. It needs to be dead weight to weigh it properly. Try a band round the rear brake lever and balance the bike on it's back wheel on the scales. I tried the scales trick before but got about 2lb differences when I used hanging scales.
The only problem with the bathroom scale is that it can be hard to read it to the exact pound. However your muscles don't make a difference. Once you and the bike are on the scale your total weight is measured.