A water metre is a mechanical or digital tool that measures the volume of water flowing into your house. In simple terms, it’s a flow tracker for your plumbing.
Most of the time, it uses a simple spinning mechanism inside a sealed chamber. As water flows through, it spins a little wheel, and that spin gets translated into numbers you see on the dial.
Have you ever watched a pinwheel spin on a windy day? A water metre’s internal wheel works just like that—except it’s turned by water pressure instead of air. Same vibe, different element.
