Circular of the Bureau of Standards, Issue 570 |
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Page 3
The origin of this troy pound and troy ounce is very uncertain . One theory is that the troy pound came from Troyes , France , but there seems to be a serious question whether even the name had its origin in that place .
The origin of this troy pound and troy ounce is very uncertain . One theory is that the troy pound came from Troyes , France , but there seems to be a serious question whether even the name had its origin in that place .
Page 6
Also the British ton is 2 240 pounds , whereas the ton gen- erally used in the United States is the short ton of 2 000 ... use of the troy pound was abolished in England January 6 , 1879 , only the troy ounce and its subdivisions being ...
Also the British ton is 2 240 pounds , whereas the ton gen- erally used in the United States is the short ton of 2 000 ... use of the troy pound was abolished in England January 6 , 1879 , only the troy ounce and its subdivisions being ...
Page 11
Later , for over 50 years , the U. S. avoirdupois pound was defined in terms of the Troy Pound of the Mint , which is a brass standard kept at the United States Mint in Philadelphia . In 1911 the Troy Pound of the Mint was superseded ...
Later , for over 50 years , the U. S. avoirdupois pound was defined in terms of the Troy Pound of the Mint , which is a brass standard kept at the United States Mint in Philadelphia . In 1911 the Troy Pound of the Mint was superseded ...
Page 19
AVOIRDUPOIS WEIGHT & [ The " grain " is the same in avoirdupois , troy , and apothecaries weight . ] 27 11/32 grains 16 drams = 1 dram ( dr ) . - 1 ounce ( oz ) = 4371⁄2 grains . 16 ounces 100 pounds 20 hundredweights = 1 pound ( lb ) ...
AVOIRDUPOIS WEIGHT & [ The " grain " is the same in avoirdupois , troy , and apothecaries weight . ] 27 11/32 grains 16 drams = 1 dram ( dr ) . - 1 ounce ( oz ) = 4371⁄2 grains . 16 ounces 100 pounds 20 hundredweights = 1 pound ( lb ) ...
Page 24
229 17 1 0.455 729 2 2.194 286 1 0.0625 0.137 142 9 16 7.291 67 1 1 apoth , or troy oz . = 480 24 1 apoth . or troy lb. ... 205 94 0.000 035 273 96 0.035 273 96 35.273 96 Units 1 avoirdupois ounce 1 avoirdupois pound 1 short ...
229 17 1 0.455 729 2 2.194 286 1 0.0625 0.137 142 9 16 7.291 67 1 1 apoth , or troy oz . = 480 24 1 apoth . or troy lb. ... 205 94 0.000 035 273 96 0.035 273 96 35.273 96 Units 1 avoirdupois ounce 1 avoirdupois pound 1 short ...
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Common terms and phrases
acre adopted apothecaries avdp avoirdupois pound balance barrel body Britain British Bureau of Standards bushel calibration capacity Circular coal contains convenient corresponding cubic centimeter cubic decimeter cubic feet cubic foot cubic inches decimal defined Definitions difference divided early earth engineers equal equivalent example fields FIGURE fluid drams fluid ounces fundamental gallon given grains grams hundredweight inch exactly indicate industry interest International International Bureau kilogram known laboratory liquid liter material mean meter metric system mile milligrams milliliters millimeters National Bureau origin physical pint precision present Prototype Meter publications published quart reference relation respectively Roman scales scruple short square square meter square yard standards of length standards of mass statute subdivisions system of weights tables Tests tonnage tons troy pound units usually various volume weights and measures yard
Popular passages
Page 18 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30£ square yards = 1 square rod (sq.
Page 18 - Cubic Measure 1728 cubic inches (cu. in.) =1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...
Page 29 - Used in assaying. The assay ton bears the same relation to the milligram that a ton of 2,000 pounds avoirdupois bears to the ounce troy; hence the weight in milligrams of precious metal obtained from one assay ton of ore gives directly the number of troy ounces to the net ton.
Page 4 - The essential features of the system were embodied in a report made to the French National Assembly by the Academy of Sciences in 1791. A number of other nations were invited to cooperate with France in establishing the new system, and Holland, Denmark...
Page 12 - When an equal-arm balance is used to compare an object with standards of mass ("weights"), the effects of variations in the acceleration of gravity are self-eliminating and need not be taken into account, but the apparent mass of the object is slightly different from the true mass because of the buoyant effects of the surrounding air. Mass can then be computed from apparent mass by applying a correction for air buoyancy. When a spring balance is used, an additional correction accounting for the local...
Page 20 - Dry Measure. — 2 pints = 1 quart; 8 quarts = 1 peck; 4 pecks = 1 bushel.
Page 14 - The mean solar day is divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds.
Page 4 - The liter is defined as the volume occupied, under standard conditions, by a quantity of pure water having a mass of 1 kilogram. This volume is very nearly equal to 1 000 cubic centimeters or 1 cubic decimeter; the actual metric equivalent iĦ.
Page 20 - The meter bars, however, continue in use as a standard for most types of measurements. In the metric system, designations of multiples and subdivisions of any unit may be arrived at by combining with the name of the unit the prefixes deka, hecto, and kilo, meaning, respectively, 10, 100, and 1,000, and deci, centi, and mill!, meaning, respectively, one-tenth, onehundredth, and one-thousandth.
Bibliographic information
| Title | Circular of the Bureau of Standards, Issue 570 Circular of the Bureau of Standards, United States. National Bureau of Standards |
| Contributor | United States. National Bureau of Standards |
| Publisher | U.S. Government Printing Office, 1956 |
| Original from | the University of Michigan |
| Digitized | 16 Oct 2006 |
| Export Citation | BiBTeX EndNote RefMan |