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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 "
Standard Elementary Arithmetic: Combining Oral and Written Exercises - Page 154
by Edward Sylvester Ellis - 1886 - 192 pages
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Efficiency Arithmetic: Primary, Book 1

Charles Ernest Chadsey, James Hamblin Smith - Arithmetic - 1917 - 298 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 =5760 grains. Apothecaries' Weight 60 grains (gr.'1 =1 dram (dr.oro) 8 drams =1 ounce...
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Efficiency Arithmetic: Advanced, Book 3

Charles Ernest Chadsey, James Hamblin Smith - Arithmetic - 1917 - 326 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 =5760 grains. Apothecaries' Weight 60 grains (gr.) = 1 dram (dr.orS) 8 drams =1 ounce...
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New High School Arithmetic: Academic, Industrial, Commercial

Webster Wells, Walter Wilson Hart - Arithmetic - 1919 - 388 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...
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New High School Arithmetic: Academic, Industrial, Commercial

Webster Wells, Walter Wilson Hart - Arithmetic - 1919 - 440 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...(gr.) = 1 pennyweight (pwt.) 20 pennyweights = 1 ounce (z-) 12 ounces — 1 pound (Ib.) Apothecaries' Weight 20 grains (gr.) = 1 scruple (3) 3 scruples...
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The New Stone-Millis Arithmetics

John Charles Stone, James Franklin Millis - Arithmetic - 1920 - 344 pages
...technical pursuits. Goldsmiths, in weighing the precious metals and stones, use the system of Troy weight : 24 grains (gr.) = 1 pennyweight (pwt.) 20 pennyweights = 1 ounce (oz.) 12 ounces = 1 pound (Ib.) Physicians and druggists, in prescriptions, use the system of Apothecaries' weight : 20 grains (gr.)...
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Arithmetic, Parts 7-8

Eugene Herz, Mary G. Brants - Arithmetic - 1920 - 342 pages
...Used by Goldsmiths, Silversmiths, and Jewelers for Measuring Precious Metals and Stones Troy Weight 24 grains (gr.) =1 pennyweight (pwt.) 20 pennyweights =1 ounce (oz.) 12 ounces = 1 pound (Ib.) Exercise 21 — Oral Review. 1. William Smith sold merchandise amounting to $250.00 to Frank Jones;...
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Applied Mathematics for Junior High Schools and High Schools

Eugene Henry Barker - Mathematics - 1920 - 264 pages
...handled. Avoirdupois weight is used for most commodities in common use except gold and silver. Troy 24 Grains (gr.) = 1 Pennyweight (pwt.) 20 Pennyweights = 1 Ounce (oz.) 12 Ounces = 1 Pound (Ib.) 1 Ib. = 12 oz. = 240 pwt. = 5760 gr. A carat is about 3.2 Troy grains, and is used in weighing diamonds....
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Arithmetic: Parts VII-VIII, advanced lessons

Eugene Herz, Mary G. Brants - Arithmetic - 1920 - 340 pages
...Used by Goldsmiths, Silversmiths, and Jewelers for Measuring Precious Metals and Stones Troy Weight 24 grains (gr.) = 1 pennyweight (pwt.) 20 pennyweights = 1 ounce (oz.) 12 ounces =1 pound (lb.) Exercise 21 — Oral Review. 1. William Smith sold merchandise amounting to $250.00 to Frank...
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Junior High School Mathematics: Book One, Volume 1

Walter Wilson Hart - 1921 - 252 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...
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Junior High School Mathematics, Book 1

Walter Wilson Hart - Mathematics - 1921 - 248 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...) = 1 pennyweight (pwt.) 20 pennyweights = 1 ounce (z-) 12 ounces = 1 pound (Ib.) Apothecaries' Weight 20 grains (gr.) = 1 scruple (3) 3 scruples =...
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