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troy vs. avoirdupois

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Author	Topic: troy vs. avoirdupois
vathek Posts: 966 Registered: Jun 99	posted 04-06-2006 02:03 PM I have never gotten a good understanding of this. Are troy and avoir lbs the same weight, only troy has 12 oz and avoir 16? IP: Logged
Scott Martin Forum Master Posts: 11520 Registered: Apr 93	posted 04-06-2006 02:23 PM 1 oz avoirdupois = 0.911458 oz troy 1 oz troy = 1.097143 oz avoirdupois Try playing with the SMP -Weight Conversion Calculator IP: Logged
FredZ Posts: 1070 Registered: Jun 99	posted 04-06-2006 05:07 PM As Scott mentioned a troy and avoir oz are not the same. A troy pound is not the same as a avoirdupois pound. Fred IP: Logged
middletom Posts: 467 Registered: May 2004	posted 04-09-2006 12:26 PM In the early seventies, at ONC, I was weighing sterling on an old avodupois balance scale. The boss drilled into me that there were 14,583 troy ounces in an avodupois pound. Everything I weighed had to be calculated to troy. We now have a troy scale. Such is the rush of progress. IP: Logged
Scott Martin Forum Master Posts: 11520 Registered: Apr 93	posted 04-09-2006 04:54 PM witzhall posted 04-09-2006 04:32 PM in the New Members' Forum. quote: So my electronic postal scale is avoirdupois? Where does one acquire a troy scale?? And why is it important to measure silver in troy? IP: Logged
FredZ Posts: 1070 Registered: Jun 99	posted 04-09-2006 06:08 PM A postal scale measures in Avoirdupois ounces. I use a triple beam gram scale since they are readily available at science supply stores or sometimes at swapmeets. The conversion is easy 31.1 grams per troy oz. It is important to covert your weight to troy because that is the unit of measurement for precious metals and the spot price for precious metals is quoted in troy ounces. Fred IP: Logged
adelapt Posts: 418 Registered: May 2003	posted 04-09-2006 06:13 PM Troy scales should be fairly readily available from jewellery supply stores and the like. It's not really important to use one scale or the other if you can use a simple conversion table. Otherwise just go metric (and still convert if you want to). The main interest in using troy is because of the weight (sorry!) of tradition. Many old reference books, documents and catalogues express weight that way. Many old items of silver bear 'scratch weights' expressed in troy. For myself, I like the romance and tradition involved. IP: Logged
swarter Moderator Posts: 2920 Registered: May 2003	posted 04-09-2006 06:19 PM Many digital scales today convert at the touch of a button. Mine reads in grams, oz(a), oz(t), carats, grains, and/or pounds (a). IP: Logged
salmoned Posts: 336 Registered: Jan 2005	posted 04-09-2006 09:32 PM Measuring in grams allows for no confusion between ounces and pounds of different sorts. IP: Logged
Scott Martin Forum Master Posts: 11520 Registered: Apr 93	posted 04-10-2006 08:33 AM witzhall posted 04-09-2006 11:43 PM in the New Members's Forum quote: Thanks very much FredZ, adelapt, swarter, and salmoned for your responses about the weighing question. I guess I'll keep an eye out for an inexpensive jeweler's scale, and I appreciate your advice. IP: Logged

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