measuring system, gold and jewelry
2006-12-11 05:21:24 · 3 answers · asked by Adam S 1 in Science & Mathematics ➔ Other - Science
1 pound avoirdupois = 7000 grains
1 pennyweight = 24 grains
20 pennyweights = 1 ounce Troy = unit of gold and silver prices quoted in newspapers.
12 ounces Troy = 1 pound Troy is hardly ever used nowadays.
When bullion dealers are buying scrap gold, they work mostly in pennyweights and grains. For scrap silver, they work in ounces and pennyweights.
2006-12-11 06:29:09 · answer #1 · answered by Anonymous · 0⤊ 0⤋
1 penny weight = 24 grains = 1.55 gms.
Earlier grade of gold in a host rock was expressed in penny wt. I don't think it is in use now. The grade of gold is now expressed in grams per tonne or in ppb/ppm
2006-12-11 05:30:35 · answer #2 · answered by saudipta c 5 · 0⤊ 1⤋
the weight of a penny depends on the minting year and on the composition of the ally
2006-12-11 05:25:15 · answer #3 · answered by Zolex1981 2 · 0⤊ 1⤋