I've just found a magnetic device in a cupboard with "Scalebuster" written on it. I'm guessing that it's some form of de-scaler for mains water pipes. I attach a couple of images.
Does anyone know how it's supposed to be used?
https://imgur.com/a/UEINHpt
Does anyone know how it's supposed to be used?
https://imgur.com/a/UEINHpt