Weighing carry on.

At home we weighed our carry on. At the Adelaide airport we weighed it again on check in and then at the gate lounge we were required to weigh it again. All hand luggage registered .4-.6 kilo more at the gate lounge compared with other scales. Imagine if you were close to 7 kgs the maximum allowable but you were over according to the gate lounge scale. Can't help but wonder if this is more Jetstar revenue raising.

International
Australia-Adelaide
Indonesia-Denpasar (Bali)