Quote Originally Posted by YorkshireDave View Post
This might not be the problem you have, but it's worth mentioning. Make sure your cellphone (and anything else which transmits eg wifi, bluetooth) is well away from the scales. A few years ago I was weighing titanium fasteners for a project and I noticed that the scales often read wrong when there was a cellphone within 8-10' of them. Not far enough wrong to be an obvious rogue reading but far enough wrong to screw up the results. Tried 4 sets of scales, got exactly the same type of errors on everything from a £25 pocket scale to a £1500 pharmacist's lab balance, the only difference was that the pharmacist's balance needed the phone within about 2-3' before the problem started.
Do you have a reason for this??

Because that explains when I was using my scales downstairs they was being funny when I used my phone for the calculator.

But upstairs I use a normal calculator and they are fine.