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2. Water metering - Wikipedia

   en.wikipedia.org/wiki/Water_metering

   A typical residential water meter. Water metering is the practice of measuring water use.Water meters measure the volume of water used by residential and commercial building units that are supplied with water by a public water supply system.

3. Reinhard Woltman - Wikipedia

   en.wikipedia.org/wiki/Reinhard_Woltman

   Reinhard Woltman (sometimes spelled Woltmann (December 28, 1757 – April 20, 1837) was a German hydraulic engineer best known for the invention of the Woltman turbine-based flow measurement device. Woltman was born in Axstedt to Johann and his wife, Adelheit née Jacobsen.

4. Flow measurement - Wikipedia

   en.wikipedia.org/wiki/Flow_measurement

   Because they are used for domestic water measurement, piston meters, also known as rotary piston or semi-positive displacement meters, are the most common flow measurement devices in the UK and are used for almost all meter sizes up to and including 40 mm (1 + 1 ⁄ 2 in). The piston meter operates on the principle of a piston rotating within a ...

5. Mueller Systems - Wikipedia

   en.wikipedia.org/wiki/Mueller_Systems

   Mueller Systems was founded in 1859 as Hawes and Hersey Company in Boston, Massachusetts and was a manufacturer of bolts, rotary pumps, and other machinery. [3] [4] In 1885, the company received a patent on the rotary displacement meter and began manufacturing water meters under the name Hersey Meter Company, offering its first rotary and disc meters for sale in 1886.

6. Positive displacement meter - Wikipedia

   en.wikipedia.org/wiki/Positive_displacement_meter

   Positive-displacement (PD) meters can measure both liquids and gases. Like turbine meters, PD flow meters work best with clean, non-corrosive, and non-erosive liquids and gases, although some models will tolerate some impurities. Because of their high accuracy, PD meters are widely used at residences to measure the amount of gas or water used.

7. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!