NBS Special Publication, Issue 250U.S. Government Printing Office, 1965 |
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Page 5
201.102a Precision decade and plug boxes . For decades not exceeding 10,000 ohms per step . ( 1 ) First point in each box .. ( * ) ( 2 ) Each additional point in same resistance box . ( * ) 201.102b Megohm box , 10 sections each 100,000 ...
201.102a Precision decade and plug boxes . For decades not exceeding 10,000 ohms per step . ( 1 ) First point in each box .. ( * ) ( 2 ) Each additional point in same resistance box . ( * ) 201.102b Megohm box , 10 sections each 100,000 ...
Page 15
201.102a Precision decade and plug boxes . For decades not exceeding 10,000 ohms per step . ( 1 ) First point in each box . ( 2 ) Each additional point in same resistance box_- 201.102b Megohm box , 10 sections each 100,000 ohms ...
201.102a Precision decade and plug boxes . For decades not exceeding 10,000 ohms per step . ( 1 ) First point in each box . ( 2 ) Each additional point in same resistance box_- 201.102b Megohm box , 10 sections each 100,000 ohms ...
Page 26
... exceeding 13 points on ratio dial and 15 on phase angle dial ) __ Determination according to 201.307a having been made , for 10 deter- minations at 25 Hz or for determinations on the second range of a double - range comparator For ...
... exceeding 13 points on ratio dial and 15 on phase angle dial ) __ Determination according to 201.307a having been made , for 10 deter- minations at 25 Hz or for determinations on the second range of a double - range comparator For ...
Page 30
... exceeding 150 V rms ( calibrations are ordinarily made with an input voltage of 100 V rms ) _ _ _ Determination of the ratio and phase angle of an inductive voltage divider for each setting of the highest decade ( all other decades ...
... exceeding 150 V rms ( calibrations are ordinarily made with an input voltage of 100 V rms ) _ _ _ Determination of the ratio and phase angle of an inductive voltage divider for each setting of the highest decade ( all other decades ...
Page 66
... exceeding 200 ft or 50 m in length_ _ _ -- This is the regular standard test which will be made and charged for in each To this amount must be added the fees for any additional tests made , and for item ( n ) , if applicable , in ...
... exceeding 200 ft or 50 m in length_ _ _ -- This is the regular standard test which will be made and charged for in each To this amount must be added the fees for any additional tests made , and for item ( n ) , if applicable , 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).