Troy ounces are certainly used worldwide when trading gold and silver. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of James R. Frysinger Sent: 05 August 2009 18:35 To: U.S. Metric Association Subject: [USMA:45514] Re: Neat chart of English mass units
Troy pounds and Troy ounces have long been and I believe still are used in the U.S. trading in precious metals. I believe that (Troy) pennyweights fall into that category, too. Jim John M. Steele wrote: > Maybe, superb chart of units of mess? :) > > If I look at how they handled the various pounds, the av. lb and stone > lead to different quarters, hundredweights and tons, which should be set > up as separate ellipses, particularly since the long and short ton and > its subdivisions are a modern "two peoples divided by a common language" > issue. > > As far as I know the troy pound (and all the others except av. pound) is > not legal for trade in the US or UK, and has no real relevance. > However, the troy ounce continues for precious metals. > > --- On *Wed, 8/5/09, James R. Frysinger /<[email protected]>/* wrote: > > > From: James R. Frysinger <[email protected]> > Subject: [USMA:45511] Neat chart of English mass units > To: "U.S. Metric Association" <[email protected]> > Date: Wednesday, August 5, 2009, 11:45 AM > > > Wow! This is a superb "graph" (I call it a chart) of the units of > mass (commonly called "weight") used in England and the numerical > relationships among them. So far as I can tell it's accurate; it > jibes with the numbers and history that I know. For one, you can see > where that figure of 5760 grains per Troy pound came from! > > You will see on here 5 "pounds" listed and they all differ in size. > A similar situation in France is what led them to chuck out the > whole mess and to devise a "simple decimal system" that we now call > the metric system. > > http://en.wikipedia.org/wiki/File:English_mass_units_graph.svg > -- James R. Frysinger > 632 Stony Point Mountain Road > Doyle, TN 38559-3030 > > (C) 931.212.0267 > (H) 931.657.3107 > (F) 931.657.3108 > -- James R. Frysinger 632 Stony Point Mountain Road Doyle, TN 38559-3030 (C) 931.212.0267 (H) 931.657.3107 (F) 931.657.3108
