In Thailand, we have an electronic public weighing scale where you have to pay 1฿ (which equates to about 3 cents) before using the machine. Because Thai girls (and boys, maybe) care a lot about their weight, we have this kind of scale in various places such as in front of convenient stores and inside big shopping malls. Does English have a word for this? Or could I describe it in few, say, not more than six words?
As far as I can remember, they were called weighing machines in the UK. My Concise Oxford Dictionary gives:
weighing machine n.
a machine for weighing persons or large weights
The Concise Oxford Dictionary of Current English, 9th edition, 1995
weighing machine noun [ C ]
a piece of equipment that you can stand on to find out your weight, or place an object on to find its weight:
- I stared in disbelief at the dial on the weighing machine.
We have these, although they also often measure body fat percentage. To be honest, I've never seen anyone use them since you can do the same for free in many other places.
I'm not sure what you'd call them, but like "public pay phone", you might be able to say "public pay scale". But since these are rare, and no one uses them, you're better off being more rather than less descriptive. The picture also helps.