Granite L-square rules
Granite L-square rules
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.
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Details
Granite L-square rules
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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