NATIONAL BUREAU OF STANDARDS REPORT OF CALIBRATION ON 2.2-MILLIMETER STAGE MICROMETER

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A001100040012-3
• Release Decision: RIFPUB
• Original Classification: K
• Document Page Count: 1
• Document Creation Date: December 28, 2016
• Document Release Date: April 16, 2001
• Sequence Number: 12
• Publication Date: February 18, 1965
• Content Type: REPORT

FORM Wved For Release 2001/07/16 : CIA-RDP78BO4747AO01100040012-3
(REV.
Maker: Bausch & Lomb
Submitted by
NBS No. 5388
Photographic Technology Section
Division 212.13
National Bureau of Standards
Washington, D. 0.
This stage micrometer has been compared with the standards of the United States and
a calibration made of some of the subintervals. The results are as follows:
Length of the interval from the zero graduation to the 2.2 millimeter
graduation at 200 Celsius: 2.204 millimeters.
U.S. DEPARTMENT OF COMMERCE
NATIONAL BUREAU OF STANDARDS
WASHINGTON. D.G. :0234
NATIONAL BUREAU OF STANDARDS
2PORT OF CALIBRATION
on
2.2 Millimeter Stage Micrometer
Length of Subintervals
Interval
(mm)
0 to 1.0
2.0
2.2
at 200 Celsius
Length
(mm)
1.003
2.004
2.204
It is estimated that these values for the lengths are not
0.001 millimeter.
by more than
The scale graduations are not numbered, therefore, the zero is taken to be the
graduation farthest to the left when the stage micrometer is held so that the trade
mark can be read in the normal manner.
For the Director,
Test No. B212.21/129
Date: February 18, 1965
Acting Chief, Length Section
Metrology Division
S. Beers
Approved For Release 2001/0PR&!a&,R-FZLdg )Y0W4WI1l1T'IgU'OR012-3