NBS Special Publication, Issue 250U.S. Government Printing Office, 1965 |
From inside the book
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... usually undertaken : ( i ) Services involving comparison of standards or instruments with NBS standards . ( ii ) Tests of devices or materials to determine compliance with specifications or claims , when the device or material is ...
... usually undertaken : ( i ) Services involving comparison of standards or instruments with NBS standards . ( ii ) Tests of devices or materials to determine compliance with specifications or claims , when the device or material is ...
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... usually arrange to delay shipment until the test is sched to start . Requests from Federal agencies , or from State agencies for calibrations or test material to be used on private or Federal contract work , should be accompanied eithe ...
... usually arrange to delay shipment until the test is sched to start . Requests from Federal agencies , or from State agencies for calibrations or test material to be used on private or Federal contract work , should be accompanied eithe ...
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... usually the Bureau's Test Number , for which an additional charge may be made . ( 2 ) All apparatus submitted for test must be in good operating condition . Repairs and adjustments should be attended to by the client prior to shipment ...
... usually the Bureau's Test Number , for which an additional charge may be made . ( 2 ) All apparatus submitted for test must be in good operating condition . Repairs and adjustments should be attended to by the client prior to shipment ...
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... usually above room temperature . Resistance Measurements Sec . 201.100 General Precision Wire - Wound Resistance Standards and Apparatus 201.101 Precision standard resistors 201.102 Precision resistance apparatus Resistance Standards ...
... usually above room temperature . Resistance Measurements Sec . 201.100 General Precision Wire - Wound Resistance Standards and Apparatus 201.101 Precision standard resistors 201.102 Precision resistance apparatus Resistance Standards ...
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... usually from 22 to 25 ° C. ( f ) The Bureau does not calibrate portable self - contained test equipment having relativ low accuracy such as portable potentiometers , resistance test sets , and double - bridge of The accuracy of these ...
... usually from 22 to 25 ° C. ( f ) The Bureau does not calibrate portable self - contained test equipment having relativ low accuracy such as portable potentiometers , resistance test sets , and double - bridge of The accuracy of these ...
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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).