Gas-meter
131flow meter — Device that measures the velocity of a gas or liquid. It has applications in medicine as well as in chemical engineering, aeronautics, and meteorology. Examples include pitot tubes, venturi tubes, and rotameters (tapered graduated tubes with a… …
132Automatic (or Remote) Meter Reading System — A system that records the consumption of electricity, gas, water, etc, and sends the data to a central data accumulation device …
