NBS Special Publication, Issue 250U.S. Government Printing Office, 1965 |
From inside the book
Results 1-5 of 9
Page 65
... tension shall not exceed 0.1 in . per 100 ft ( 2 mm per 25 m ) . The standard tension is 10 lb ( 4.5 kg ) for tapes from 25 to 100 ft or from 10 to 30 m in length , and 20 65 Working line standards of length 403 Commercial line ...
... tension shall not exceed 0.1 in . per 100 ft ( 2 mm per 25 m ) . The standard tension is 10 lb ( 4.5 kg ) for tapes from 25 to 100 ft or from 10 to 30 m in length , and 20 65 Working line standards of length 403 Commercial line ...
Page 66
... tension other than standard tension , for a tape not exceeding 200 ft or 50 m in length__ Tension desired must be specified . Fee ( * ) ( * ) 202.404c Steel tape - determination of the correction to the total length when supported at ...
... tension other than standard tension , for a tape not exceeding 200 ft or 50 m in length__ Tension desired must be specified . Fee ( * ) ( * ) 202.404c Steel tape - determination of the correction to the total length when supported at ...
Page 67
... tension and / or method of support , with a probable error not greater than ± 0.050 mm ( * ) 202.405c Invar 50 - m base - line tape - determination of total length supported throughout , by computation from the observed length when sup ...
... tension and / or method of support , with a probable error not greater than ± 0.050 mm ( * ) 202.405c Invar 50 - m base - line tape - determination of total length supported throughout , by computation from the observed length when sup ...
Page 68
... tension specified for test item 202.405c . Charge for each interval Invar 50 - m base - line tape - determination on the geodetic comparator of the coefficient of expansion with an accuracy of at least 0.000001 per degree Celsius using ...
... tension specified for test item 202.405c . Charge for each interval Invar 50 - m base - line tape - determination on the geodetic comparator of the coefficient of expansion with an accuracy of at least 0.000001 per degree Celsius using ...
Page
... to be unsuitable for test or unreliable , the test may be discontinued and a charge will be made to cover the cost of the work done . Capacity not exceeding 10,000 lb : 206.042a Compression 206.042b Tension__ 102 Item Fee Description.
... to be unsuitable for test or unreliable , the test may be discontinued and a charge will be made to cover the cost of the work done . Capacity not exceeding 10,000 lb : 206.042a Compression 206.042b Tension__ 102 Item Fee Description.
Other editions - View all
Common terms and phrases
Ac-dc accepted for calibration accuracy additional American Standards Association API Standard apparatus Appendix attenuators bolometer bolometer units bulb and liquid Bureau of Standards calibration or test changes in emf charged dependent color temperature condenser microphones current fees decibels Determination diameter Electric electrode electromotive force end of table errors exceeding footnote at end frequency Gage blocks gages-determination glass Group of Standard higher or lower hygrometers ice-point reading indications inductors instruments Invar Item Description Fee laboratory length liquid column mass measurements meter National Reference Group ohms perature phase angle plug Precision pressure Radium ratio reference standards REPORT OF CALIBRATION resistance thermometer resistors ring gages sample saturated standard cells schedule special tests specifications spectrophotometer stability standard resistors submitted for calibration tabulated corrections apply temperature range test points test_ tests not covered thermal conductivity thermocouple thermometer was tested U.S. DEPARTMENT uncertainty voltage dividers waveguide weights
Popular passages
Page 11 - Standard Reference Materials issued by the National Bureau of Standards to calibrate a measurement system, or to produce scientific data that can be referred to a common base. A schedule of prices and amounts, as well as directions for ordering, is included.
Page 49 - ... index markers. Since it is necessary to determine the shift of the principal point resulting from prism effect in the lens, the equivalent focal length of the lens as mounted In the camera is incidentally determined...
Page 55 - ... wire loops, spring balances, tension handles, or other attachments liable to be detached or changed in shape. The error in the total length of the tape, when supported horizontally throughout its length at the standard temperature of 68° F. (20° C.) and at standard tension, shall not be more than 0.1 inch per 100 feet (2 mm per 25 m).