 | Georgia Alexander - Arithmetic - 1921 - 282 pages
...pounds =1 hundredweight (cwt.) 2000 pounds =1 ton (T.) One pound Avoirdupois = 7000 grains Troy Weight 24 grains (gr.) =1 pennyweight... (pwt.) 20 pennyweights =1 ounce (oz.) 12 ounces =1 pound (Ib.) One Pound Troy = C760 grains Apothecaries' Weight 60 grains (gr.) =1 dram (dr. or 3) 8 drams ,.. =1... | |
 | Robert Franklin Anderson - Arithmetic - 1921 - 346 pages
...used in custom houses and in certain states in some wholesale and retail transactions. Troy Weight 24 grains (gr.) = 1 pennyweight (pwt.) 20 pennyweights = 1 ounce (oz.) 12 ounces = 1 pound (Ib.) The unit of weight for gems and precious stones is the carat, which equals 200 milligrams, or about... | |
 | Walter Wilson Hart - Mathematics - 1922 - 318 pages
...following weights are used : 112 pounds = 1 long hundredweight 2240 pounds = 1 long ton Troy Weight (Used in weighing gold, silver, and jewels) 24 grains...(oz.) 12 ounces = 1 pound (Ib.) Apothecaries' Weight 20 grains (gr.) = 1 scruple (3) 3 scruples = 1 dram (3) 8 drams = 1 ounce ( 3 ) 12 ounces =; 1 pound... | |
 | John Marvin Colaw, John Kelley Elkwood - Arithmetic - 1923 - 476 pages
...is used in weighing gold, silver, and jewels, and in laboratory tests. 198 SCHOOL ARITHMETIC. TABLE. 24 grains (gr.) = 1 pennyweight (pwt.). 20 pennyweights — 1 ounce (oz.). 12 ounces = 1 pound (Ib.). Ib. oz. pwt. gr. 1 = 12 = 240 = 5760. 1. The carat is a weight used in weighing diamonds and other... | |
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TROY WEIGHT. 24 grains (gr.) = 1 pennyweight (pwt.). 20 pennyweights = 1 ounce (oz.). 12 ounces = 1 pound (lb.). 351. Apothecaries' weight is used in mixing medicines and in selling them at retail. APOTHECARIES 
