Theoretically, scales, if set to zero, should weigh pretty much equally no matter which scale is used. Of course, that's not always the case in the real world.
I only weigh on one scale...the one at my local family doctor's office. It's one of two identical digital scales and I've used the weight from that scale since before day one of my weight loss regimen. It would be best, I think, to use one scale all the time...even if that means buying one for the home and not using other scales (at least not for your "official" weight loss).
Edited by: ZENANDNOW at: 3/5/2013 (18:40)