NBS Special Publication, Issue 250U.S. Government Printing Office, 1965 |
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Page
... uncertainties in the measurement of physical quantit NBS , together with estimates of the current state of the art in other laboratories , are gi NBS Technical Note 262.8 Samples of reports of calibration issued by the Bureau are in ...
... uncertainties in the measurement of physical quantit NBS , together with estimates of the current state of the art in other laboratories , are gi NBS Technical Note 262.8 Samples of reports of calibration issued by the Bureau are in ...
Page 3
... uncertainty of the reported value at the time of calibration . This uncertainty will v from 0.0001 percent for Thomas - type 1 - ohm standards to 0.002 percent for resistors of nomi value 0.0001 ohm . Additional information regarding ...
... uncertainty of the reported value at the time of calibration . This uncertainty will v from 0.0001 percent for Thomas - type 1 - ohm standards to 0.002 percent for resistors of nomi value 0.0001 ohm . Additional information regarding ...
Page 13
... uncertainty of the reported value at the time of calibration . This uncertainty will va from 0.0001 percent for Thomas - type 1 - ohm standards to 0.002 percent for resistors of nomin value 0.0001 ohm . Additional information regarding ...
... uncertainty of the reported value at the time of calibration . This uncertainty will va from 0.0001 percent for Thomas - type 1 - ohm standards to 0.002 percent for resistors of nomin value 0.0001 ohm . Additional information regarding ...
Page 17
... uncertainty in the derivation of the unit o inductance which is embodied in the NBS working standards . In general , inductance value will be given to as many significant figures as are justified at the time of measurement . Th uncertainty ...
... uncertainty in the derivation of the unit o inductance which is embodied in the NBS working standards . In general , inductance value will be given to as many significant figures as are justified at the time of measurement . Th uncertainty ...
Page 18
... uncertainty of 0.005 percent . ( * ) 201.201b Cadmium standard cell ( saturated type ) , measurement of the first cell of a group at a fixed temperature of 28 ° C , in thermostatically con- trolled oil bath or at a fixed temperature in ...
... uncertainty of 0.005 percent . ( * ) 201.201b Cadmium standard cell ( saturated type ) , measurement of the first cell of a group at a fixed temperature of 28 ° C , in thermostatically con- trolled oil bath or at a fixed temperature in ...
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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).