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granite component, Granite Surface Plates, Granite Machine Parts, granite inspection surface pla, grnaite squares, ranite straight ruler
granite component, Granite Surface Plates, Granite Machine Parts, granite inspection surface pla, grnaite squares, ranite straight ruler
Granite L-square rules are suitable for verticality testing and precisions lineation. In order to be easy to processing and decrease the weight, the lightening holes are added.
Material: granite
Standard: GB/T 6092-2004
Specification: 100x63-1000x630mm or customize
Hardness of the working surface: HS70
Surface treatment: ground finish
Precision grade: 00-0
Packaging: wooden box
Specification | verticality of measuring surface towards datum | Planeness or linearity of measuring surface | Planeness or linearity of datum | |||
Precision grade (um) | ||||||
00 | 0 | 00 | 0 | 00 | 0 | |
100×63 | 2 | 4 | 1 | 1 | 1 | 1 |
160×100 | 2 | 4 | 1 | 2 | 1 | 1 |
250×160 | 2.5 | 5 | 1 | 2 | 1 | 2 |
400×250 | 3.5 | 7 | 1 | 2.5 | 1 | 2 |
630×400 | 4.5 | 9 | 1.5 | 3 | 1 | 2.5 |
1000×630 | 6 | 12 | 2.5 | 5 | 1.5 | 5 |
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