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On Sun, 28 Sep 2003 19:39:53 GMT, Richard Clark
wrote: Hi All, Star Avoirdupois Pound http://museum.nist.gov/object.asp?ObjID=10 Hassler constructed troy pounds and avoirdupois pounds, for distribution to the custom-houses and to the States. The mass of a troy pound is 0.82286 of an avoirdupois pound's mass. The troy pound is used for determining the mass of precious metals. Hassler used the troy pound of the U.S. Mint in Philadelphia, procured in London in 1827 by Albert Gallatin, to derive both types of standards. It is likely that the Star Avoirdupois Pound (so named because of the star inscribed on top of its knob) is the avoirdupois pound that was directly derived from the Mint Pound by Hassler. http://museum.nist.gov/exhibits/ex1/Room2.html Ferdinand Rudolph Hassler was appointed the first Superintendent of the Survey of the Coast by President Madison in 1816. Born in Aarau, Switzerland in 1770, Hassler emigrated to the United States in 1805. Gene Nygaard http://ourworld.compuserve.com/homepages/Gene_Nygaard/ |
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