Water meter : A contrivance for measuring a supply of water delivered or received for any purpose, as from a street main.

Example:


Taxonomy
water meters, element, flow rates, American Water Works Association, measure, gallons, velocity, jet, odometer, Multi-jet, mag meters, Association standards, Cold-Water, Displacement, Turbine meters, sweep hand, high flow, meter registers.

Defination from the web:
water meters. ... In many developed countries water meters are used at each residential and commercial building in a public water supply system. ...