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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. Project Neptune (water distribution system) - Wikipedia

    en.wikipedia.org/wiki/Project_Neptune_(water...

    Project Neptune is a water distribution project in the United Kingdom with the goal of establishing an optimized and more sustainable system for water distribution. The project was officially announced in April 2007, and received a budget of £2.7 million.

  4. Positive displacement meter - Wikipedia

    en.wikipedia.org/wiki/Positive_displacement_meter

    A positive displacement meter is a type of flow meter that requires fluid to mechanically displace components in the meter in order for flow measurement. Positive displacement (PD) flow meters measure the volumetric flow rate of a moving fluid or gas by dividing the media into fixed, metered volumes (finite increments or volumes of the fluid).

  5. Metre sea water - Wikipedia

    en.wikipedia.org/wiki/Metre_sea_water

    The unit used in the US is the foot sea water (fsw), based on standard gravity and a sea-water density of 64 lb/ft 3. According to the US Navy Diving Manual, one fsw equals 0.30643 msw, 0.030 643 bar , or 0.444 44 psi , [ 1 ] [ 2 ] though elsewhere it states that 33 fsw is 14.7 psi (one atmosphere), which gives one fsw equal to about 0.445 psi.

  6. DRS RQ-15 Neptune - Wikipedia

    en.wikipedia.org/wiki/DRS_RQ-15_Neptune

    The DRS RQ-15 Neptune is a reconnaissance UAV developed in the United States in the early years of the 21st century. The design is optimized for operations over water, and is capable of water landings on its flying boat–like hull. The 11.2 kW (15 hp) pusher engine is mounted high to keep it dry during takeoffs and landings.

  7. 2-inch RP - Wikipedia

    en.wikipedia.org/wiki/2-inch_RP

    A Sea Vixen with underwing 2-inch rocket pods between drop tanks and Firestreak air-to-air missiles. The 2-inch RP, short for Rocket Projectile, 2-inch, Number 1 Mark 1, was an unguided rocket weapon developed by the Royal Navy in the 1950s. It is generally similar to contemporary rockets like the SNEB and FFAR, although somewhat smaller.