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  2. Troy weight - Wikipedia

    en.wikipedia.org/wiki/Troy_weight

    C-19 [17] Thus one troy ounce = 480 grains × 0.064 798 91 grams/grain = 31.103 476 80 grams. Since the ounce avoirdupois is defined as 437.5 grains, a troy ounce is exactly 480 ⁄ 437.5 = 192 ⁄ 175 or about 1.09714 ounces avoirdupois or about 9.7% more. The troy ounce for trading precious metals is considered to be sufficiently approximated ...

  3. Pennyweight - Wikipedia

    en.wikipedia.org/wiki/Pennyweight

    A pennyweight (dwt) is a unit of mass equal to 24 grains, 1 ⁄ 20 of a troy ounce, 1 ⁄ 240 of a troy pound, approximately 0.054857 avoirdupois ounce [1] and exactly 1.55517384 grams. [2] It is abbreviated dwt , d standing for denarius – (an ancient Roman coin), and later used as the symbol of an old British penny (see £sd ).

  4. Deadweight tonnage - Wikipedia

    en.wikipedia.org/wiki/Deadweight_tonnage

    Maximum DWT is the amount of weight a ship can carry without riding dangerously low in the water. Scale for a 6,000-tonne DWT ship. Deadweight tonnage (also known as deadweight; abbreviated to DWT, D.W.T., d.w.t., or dwt) or tons deadweight (DWT) is a measure of how much weight a ship can carry. [1] [2] [3] It is the sum of the weights of cargo ...

  5. Circulator pump - Wikipedia

    en.wikipedia.org/wiki/Circulator_pump

    By installing a thermostatically controlled pump just after the farthest fixture on the loop, cyclic pumping maintains ready hot water up to the last fixture on the loop instead of wasting energy heating the piping from the last fixture to the water heater. Installing a circulation pump at the farthest fixture on a hot water circulation loop is ...

  6. Own a pool in Southern California? New air-quality rule ...

    www.aol.com/news/own-pool-southern-california...

    The rule will lead to the replacement over three decades of more than 1 million gas-burning appliances — including an estimated 700,000 pool heaters and 300,000 tankless water heaters — with ...

  7. Energy factor - Wikipedia

    en.wikipedia.org/wiki/Energy_factor

    The energy factor metric only applies to residential water heaters, which are currently defined by fuel, type, and input capacity. [5] Generally, the EF number represents the thermal efficiency of the water heater as a percentage, since it is an average of the ratio of the theoretical heat required to raise the temperature of water drawn to the amount of energy actually consumed by the water ...

  8. Woman Gifts Her Longtime Mailman a Farewell Card Before ... - AOL

    www.aol.com/woman-gifts-her-longtime-mailman...

    For more than two decades, Madison Vaughan has built a sweet relationship with her longtime mailman, Tim, highlighting the importance of community

  9. QB Teddy Bridgewater, fresh off coaching alma mater to HS ...

    www.aol.com/sports/qb-teddy-bridgewater-fresh...

    Two weeks after leading his high school alma mater to a state championship, Teddy Bridgewater is returning to the NFL.. On Thursday, Bridgewater, 32, was signed to the Detroit Lions' active roster ...

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