Fowler 52-439-031-0 1-2-3 Blocks with 31 Holes w/Case
Condition: Used
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1-2-3 Blocks—tolerances guaranteed to .0001" for squareness per inch
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Thirty-one holes. Blocks are matched in pairs and measure 1" x 2" x 3"
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Very useful in mounting work for precision grinding, layout work, etc.
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Blocks hardened to 58-60 Rockwell C
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Ground to surface finish 6-10 micro-inches
- Matched accuracy within ± .0002"
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