Haha, it was not corruption on the cheap!
Some 50+ years ago, this kind of coin-operated pedestal weighing machines was very popular in places like restaurants, the lobbies of cinemas, etc. AVERY was the market leader.
A visit to the cinemas would see us stepping up onto the base plate, and inserting a 20-sen coin into the slot at the upperside of the dial. A second later, the needle would rotate nicely, and indicate our weights. (in pounds; kg unheard of then).
It seemed the scale always showed favourable readings, as there were smiles all round when we stepped off the base plate.
These machines are rare relics now. Perhaps, it is no longer cool to have personal “body prosperity index” checked in public and, only to discover that the scales no longer tip in one’s favour. Blame fast food — maybe.