Details
Granite square boxes
Usage: Granite square boxes are used for checking planeness and verticality of workpieces, and then make precision lineation.
Material: granite
Standard: JJG194-92
Specification: 100x100-800x800mm or customize
Hardness of the working surface: HS70
Surface treatment: ground finish
Precision grade: 00-0
Packaging: wooden box
Specification of granite square boxes:
Specification (mm) |
Parallel |
Planeness |
Verticality |
|||
Precision grade (um) |
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00 |
0 |
00 |
0 |
00 |
0 |
|
100×100×100 |
1 |
2 |
1 |
2 |
1 |
2 |
150×150×150 |
1.5 |
3 |
1 |
2 |
1.5 |
3 |
200×200×200 |
2 |
4 |
1.5 |
3 |
2 |
4 |
300×300×300 |
3 |
6 |
1.5 |
3 |
3 |
6 |
400×400×400 |
4 |
8 |
2 |
4 |
4 |
8 |
500×500×500 |
5 |
10 |
2.5 |
5 |
5 |
10 |
600×600×600 |
6 |
12 |
3 |
6 |
6 |
12 |
800×800×800 |
8 |
16 |
4 |
8 |
8 |
16 |