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GENERAL CATALOG
Metric System
Gage Block Sets in Case
RECTANGULAR:
1mm Based Gage Blocks

RC 88.MA1
SQUARE
2MM Based Gage Blocks.

S2S 88.MA1
1mm and 2mm Based Sets
Rectangular sets are offered as 1mm based sets:
Rectangular 1mm Based sets are the most common Metric gage block sets.  1mm based means that most of the blocks in the set contain sizes that start close to 1mm in thickness.  For example a set may contain the following sizes:

      9 Blocks 1.001 thru 1.009mm in Steps of .001mm
      9 Blocks 1.01 thru 1.09mm in Steps of .01mm
      9 Blocks 1.1 thru 1.9mm in Steps of .1mm
      9 Blocks 1mm thru 9mm in Steps of 1.0mm
      9 Blocks 10mm thru 90mm in Steps of 10.0mm

     28 of the 45 sizes in the set are are 1mm plus a decimal fraction of a millimeter in length.  


Square sets are offered as 2mm based sets:
2mm Based sets are Metric sets that contain blocks that start close to 2mm in thickness.  Below is the 2mm 
based equivalent of the set listed in the above example:

      9 Blocks 2.001 thru 2.009mm in Steps of .001mm
      9 Blocks 2.01 thru 2.09mm in Steps of .01mm
      9 Blocks 2.1 thru 2.9mm in Steps of .1mm
      9 Blocks 1mm thru 9mm in Steps of 1.0mm
      9 Blocks 10mm thru 90mm in Steps of 10.0mm

     28 of the 45 sizes in the set are are 2mm plus a decimal fraction of a millimeter in length. 

Square style metric sets are only offered as 2mm base sets because of the larger surface are of the blocks.
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