Circular of the Bureau of Standards, Issue 570U.S. Government Printing Office, 1956 |
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Page
... Testing methods and instruments are developed ; physical constants and properties of materials are determined ; and technical processes are investigated . Journal of Research The Journal presents research papers by authorities in the ...
... Testing methods and instruments are developed ; physical constants and properties of materials are determined ; and technical processes are investigated . Journal of Research The Journal presents research papers by authorities in the ...
Page
... Tests and calibrations of length standards . 3.2 . Standards of mass_ a . Distinction between mass and weight b . Effect of air buoyancy . c . Tests of standards of mass- Page Τ 1 1 2 2 2 2 4 5 5 5 6 8778 8 3.4 . Standards of capacity ...
... Tests and calibrations of length standards . 3.2 . Standards of mass_ a . Distinction between mass and weight b . Effect of air buoyancy . c . Tests of standards of mass- Page Τ 1 1 2 2 2 2 4 5 5 5 6 8778 8 3.4 . Standards of capacity ...
Page 5
... system is evidenced by the rather voluminous literature on the subject . The National Bureau of Standards neither advocates nor opposes the. c . The International Bureau of Weights and Measures FIGURE 2. Gage block testing . 5.
... system is evidenced by the rather voluminous literature on the subject . The National Bureau of Standards neither advocates nor opposes the. c . The International Bureau of Weights and Measures FIGURE 2. Gage block testing . 5.
Page 7
... gages used by industry along with some of the equipment used by NBS for this calibration ( see page 8 ) . The dictum of convenience applies not only to subdivisions of. FIGURE 2. Gage block testing . NBS Tape Calibration Laboratory . 7.
... gages used by industry along with some of the equipment used by NBS for this calibration ( see page 8 ) . The dictum of convenience applies not only to subdivisions of. FIGURE 2. Gage block testing . NBS Tape Calibration Laboratory . 7.
Page 10
... test only apparatus of such material , design , and construction as to ensure accuracy and permanence sufficient to justify test by the Bureau . Tests are made in accordance with test - fee schedules , copies of which may be obtained by ...
... test only apparatus of such material , design , and construction as to ensure accuracy and permanence sufficient to justify test by the Bureau . Tests are made in accordance with test - fee schedules , copies of which may be obtained by ...
Common terms and phrases
apoth apothecaries apothecaries weight avdp avoirdupois pound Britain British Imperial Bureau of Standards Bureau of Weights bushel calibration Circular cubic centimeter cubic decimeter cubic feet cubic foot cubic inches cubic meter decimal defined dry quarts equivalent fluid drams fluid ounces fluid scruple grains grams gross or long hectare hundredweight Imperial gallon inch exactly International Bureau International Prototype Meter length and mass liquid pint liquid quarts liter long ton mass standard metric system milligrams milliliters millimeters National Bureau number system pint or quart primary standard Prototype Kilogram short ton square centimeter square inch square meter square yard standards of capacity standards of length standards of mass struck measure subdivisions system of weights tonnage troy pound U. S. fluid ounce U. S. gallon U. S. Government Printing unit of weight United States Prototype units and standards Units and Systems UNITS OF CAPACITY volume weights and measures
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.