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Micrometer Checking Sets
CORRECT METHOD
Micrometer Checking Sets are used to check 0-1 Inch or 0-25mm micrometers.  The blocks
 are selected to check the lead screw of the micrometer at different rotational positions of the
 micrometer spindle.  This enables checking for any significant deviations of the screw and
 orientation of the spindle contact face at the same time.
INCORRECT METHOD
English System
Metric System
The sizes contained in these sets are:
.105, .210, .315, .420, .500, 
.605, .710, .815, .920, and 1.000
The sizes contained in these sets are:
2.5, 5.1, 7.7, 10.3, 12.9, 15.0,
17.6, 20.2, 22.8, and 25.0mm 
Steel
These sets are primarily meant as working sets to calibrated 0-1 Inch or 0-25mm micrometers.
The accuracy of the gage blocks is better than 4 times the resolution of most micrometers.   

Steel is the material of choice as the thermal expansion of the gage blocks will be roughly
equal to the thermal expansion of most micrometers.
Catalog
No.
 Grade 
RS 10.A
AS1
Catalog
No.
 Grade 
RS 10.MA
AS1

				
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GB20
©2008, Webber Gage Division, The L. S. Starrett Co, Cleveland, Ohio , 44145
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