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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

## An Advanced Arithmetic, Theoretical and Practical

James William Nicholson - Arithmetic - 1889 - 408 pages
...Troy weight is used in weighing precious stones, gold, silver, etc. • TABLE. 24 grains (gr.) make 1 pennyweight (pwt.) 20 pennyweights " 1 ounce (oz.) 12 ounces " 1 POUND (lb.) The standard unit of weight in the United States is the troy pound of the Mint, which is identical...

## Essentials of Business Arithmetic: For Use in Schools and Colleges

Warren H. Sadler, William Russell Will - Business mathematics - 1890 - 318 pages
....68 .136 MEASURES OF WEIGHT. 157. Troy Weight is used in weighing gold, silver, jewels, etc. Scale : 24 grains (gr.) = 1 pennyweight (pwt.) ; 20 pennyweights = 1 ounce (oz.) ; 12 ounces = 1 pound (lb.) 158. Apothecaries' "Weight is used by physicians and apothecaries in compounding medicines which...

## The New Model Arithmetic

Henry Holmes Belfield - Arithmetic - 1891 - 360 pages
...Pennsylvania coal mines. TROY WEIGHT. 304. Troy Weight is used in weighing gold, silver and jewels. TABLE. 24 grains, ( gr. ) =1 pennyweight, (pwt. ) 20 pennyweights = 1 ounce, ( oz. ) 12 ounces = 1 pound, ( Ib. ) UNIT EQUIVALENTS. to. oz. putt. gr. 1 « 12 = 240 = 5760 1 = 20 480 1 24 A carat Is a weight of about...

## First Lessons in Arithmetic Oral and Written: For Primary Schools

James Bates Thomson - Arithmetic - 1891 - 206 pages
...2712 96207 3872 LESSON XI. Troy Weight. Troy Weight is used to weigh gold, silver, jewels, etc. TABLE. 24 grains (gr.) = 1 pennyweight, pwt. 20 pennyweights = 1 ounce, oz. 12 ounces = 1 pound, Jb. ORAL EXERCISES. 1. How many grains in 2 pennyweights ? 2. How many pwts. in 2 oz. ? 3 oz. ? 5 oz....

## A Textbook on Sheet-metal Pattern Drafting, Volume 1

Metal-work - 1901 - 548 pages
...pound contains 5,760 grains, and a grain troy is the same as a grain avoirdupois. TABLE OF THOY WEIGHT. 24 grains (gr.) =. 1 pennyweight . . pwt. 20 pennyweights = 1 ounce oz. 12 ounces =1 pound Ib. 9 APOTHECARIES' WEIGHT. 22. Apothecaries' weight is used by physicians in prescribing and by druggists...

## New Practical Arithmetic

Eugene L. Dubbs - Arithmetic - 1901 - 462 pages
...weight ? TROY WEIGHT 53. Troy weight is used for weighing gold, silver, and precious stones. TABLE. 24 grains (gr.) = 1 pennyweight . . pwt. 20 pennyweights...ounce . . . . oz. 12 ounces = 1 pound . . . . Ib. REMARK. The standard unit of weight in the United States is the Troy pound, which contains 5760 grains....

## A Textbook of Electric Lighting and Railways, Volume 1

International Correspondence Schools - Electric lighting - 1901 - 624 pages
...considered 1 ton, unless the long ton (2,2-tO pounds) is especially mentioned. TUOY "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 Troy weight is used in weighing gold and silver ware, jewels,...

George Edward Atwood - 1901 - 162 pages
...is used in the United States Custom Houses and in weighing coal and iron at the mines. TROY WEIGHT 24 grains (gr.) . . . . = 1 pennyweight . . pwt. 20.... . = 1 ounce oz. 12 ounces = 1 pound . . . . Ib. One pound Troy = 5760 grains. APOTHECARIES' WEIGHT 60 grains (gr. ) . . . . = 1 dram . ... dr., orj....