31020
Inspection blocks with column
Description
Material
Black granite (primary stone).
Version
Block precision grade 0
Note
Primary stone has major benefits over conventional granite:
- 3 times more wear resistance.
- 20% greater density.
- 3 times less heat expansion.
Suitable dial gauge holders see 31140 and 31141.
- 3 times more wear resistance.
- 20% greater density.
- 3 times less heat expansion.
Suitable dial gauge holders see 31140 and 31141.
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