 | Joseph Ray - Arithmetic - 1903 - 366 pages
...min. 10. Reduce 20280 minutes to weeks. 2 wk. 2 hr. SPECIAL TABLES. — I. MEASURES OF WEIGHT 72. Troy weight is used in weighing gold, silver, and jewels. 24 grains (gr.) = 1 pennyweight, marked pwt. 20 pennyweights = 1 ounce, marked oz. 12 ounces = 1 pound, marked Ib. NOTE. — The standard... | |
 | Nehemiah Hawkins - Machine-shop practice - 1903 - 362 pages
...a leap year, and contains 366 days — the other years 365 days. TROY WEIGHT. 24 grains (gr.), make 1 pennyweight, pwt. 20 pennyweights, 1 ounce, oz. 12 ounces, 1 pound, Ib. I. II. III. IV. V. VI. VII. VIII. IX. X. XI. XII. XIII. XIV. denotes One. Two. Three. Four. Five. Six.... | |
 | International Correspondence Schools - Engineering - 1904 - 392 pages
...ounces = 1 pound Ib. 112 pounds = 1 hundredweight cwt. 20 cwt., or 2,240 Ib = 1 ton T. TROY WEIGHT. 24 grains (gr.) = 1 pennyweight , pwt. . 20 pennyweights = 1 ounce oz. 12 ounces = 1 pound Ib. 1 Ib. = 12 oz. = 240 pwt. = 5,760 gr. DRY MEASURE. 2 pints (pt.) = 1 quart qt. 8 quarts = 1 peck pk.... | |
 | John Henry Moore - Business mathematics - 1904 - 404 pages
...Apothecaries' Weigh! . Troy Weight 355. Troy weight is used for weighing gold, silver, and jewels. TABLE 24 grains (gr.) = 1 pennyweight (pwt.). 20 pennyweights = 1 ounce (oz.). 12 ounces • = 1 pound (Ib.). lb. oz. pwt. gr. 1 = 12 = 240 = 5760. The grains of the Troy, Avoirdupois, and Apothecaries' weights... | |
 | Jacob Henry Minick, Clement Carrington Gaines - Business mathematics - 1904 - 412 pages
...Troy Weight is used in weighing gold, silver, jewels, and also in philosophical experiments. 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 Scale.— 12, 20, 24, 1. The standard unit of weight is the Troy... | |
 | John Henry Moore - Business mathematics - 1904 - 404 pages
...Apothecaries' Weight Troy Weight 355. Troy weight is used for weighing gold, silver, and jewels. TABLE 24 grains (gr.) = 1 pennyweight (pwt.). 20 pennyweights = 1 ounce (oz.). 12 ounces = 1 pound (lb.). lb. oz. pwt. gr. 1 = 12 = 240 = 5760. The grains of the Troy, Avoirdupois, and Apothecaries'... | |
 | International Correspondence Schools - Plumbing - 1905 - 448 pages
...TABLE. 16 ounres = 1 pound Ib. 112 pounds = 1 hundredweight cwt 20 cwt , or 2,240 Ib = 1 ton T. S4 grains (gr.) = 1 pennyweight , pwt, 20 pennyweights = 1 ounce oz. 12 ounces = 1 pound Ib. 1 Ib. = 12 oz. = 240 pwt. =- 6,760 gr. DRY MEASURE. 2 pints (pt.) = 1 quart qt. 8 quarts — 1 peck... | |
 | David Martin Sensenig - 1906 - 278 pages
...gold, silver, platinum, and jewels, except precious stones. The standard unit is the TKOY POUND. TABLE. 24 grains (gr.) = 1 pennyweight (pwt.). - 20 pennyweights = 1 ounce (oz.). 12 ounces = 1 pound (Ib.). NOTE 1. The unit of weight for precious stones Is the CARAT, which equals 4 diamond grains, or about... | |
 | International Correspondence Schools - Arithmetic - 1906 - 576 pages
...be considered 1 ton, unless the long ton (2,240 pounds) is especially mentioned. TROY WEIGHT. TABLE. 24 grains (gr.) = 1 pennyweight .... pwt. 20 pennyweights = 1 ounce oz 12 ounces . . . . • = 1 pound Ib. Ib. oz. pwt. gr. 1 = 12 = 240 = 5,760 33. Troy weight is used in weighing gold and silver ware, jewels,... | |
 | William James Milne - Arithmetic - 1906 - 302 pages
...ounce, or 24 grains, is called a pennyweight. These related weights form the table of troy weight. 24 grains (gr.) = 1 pennyweight, pwt. 20 pennyweights = 1 ounce, oz. 12 ounces = 1 pound, Ib. In writing prescriptions physicians often use these units : 20 grains = 1 scruple 3 scruples = 1 dram... | |
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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 
