Originally Posted by
NickB
Perish the thought that any technology could possibly fail. Oh, no. not possible at all. Everything always works like clockwork, especially at airports. After all, if there ever had been the slightest tech hiccup in the history of LHR, we would have heard about it, wouldn't we?
Scales are checked on a very regular basis. If they are slightly out after a passenger has gone, ie. they may show 0.1kg, they are reset to zero. Passengers are also invited to check weights on adjacent scales if they feel something is wrong, and there are public scales which can be used by any passenger - these are in a different location to check in desks.
No scale is ever out by 1kg or more or that desk would be closed as unserviceable until the scales were repaired.