Saw an old weigh scale on an American show the other day. You step on and put in what you think you weigh. When you put in a quarter, the scale weighs you and if your guess was correct, you get your quarter back. Would be good to own one.
I saw one at an antique dealer years ago
thing of beauty it was
it was also $8000
those old gambling trade stimulators were bloody clever devices, they had so many ideas with the result of winning a coin or two, cigar or beer.
It always amazes me how inventive they were to hide them as something like a gumball machine that is really a slot machine and in this case a scale . so they even had scales that paid out