You have to pick one scale as your "official" scale and not pay much attention to the others. Scales are all calibrated differently and you can weigh something different on each one. Flooring also effects a scale. Put some objects (like 2 hand weights) that you know the weight of on the scale to gauge it's accuracy. Scales should be within a few pounds of each other. It might be time for a new battery or new scale.
28 may. 15 por el miembro:
Suzi161