I suppose if we really doubt the scales we could just turn up with a few litres of water and weigh those first... then either drink them or bin them!
I'm sure if the first set of scales were not accurate the check-in staff wouldn't mind me using another set.... but what if they all turned out to be innaccurate and i had just proved it?
Hmmm.... I'm travelling to PVG again at the end of the month and I fear Mrs PVG's London shopping spree is going to be pushing the weight limit, so watch out for the weary traveller carrying a few bottles of Highland spring
