ND is at the foot of “Jinanqing” granite mine which boasts rich mineral resources and advantaged resource condition. It has complete machinery processing equipment, is equipped with advanced electronic detection instrument, realizes computer data processing and has a group of high-quality dedicated staff.
On inspection of verticality and parallelism as absolute 90° measuring.
|
TYPE(mm) |
Squareness beteween abjacent measuring surfaces | straightness of measuring surface | Parallelism between opposite measuring surface | |||
|
Precision grade |
||||||
|
00 |
0 |
00 |
0 |
00 |
0 |
|
| 150*150 | 1.8 | 3.5 | 0.8 | 1.6 | 1.8 | 3.5 |
|
160x160 |
2 |
4 |
0.8 |
1.7 |
2 |
4 |
|
200x200 |
2 |
4 |
0.9 |
1.8 |
2 |
4 |
|
250x250 |
2.2 |
4.5 |
1 |
2 |
2.2 |
4.5 |
|
315x315 |
2.6 |
5.2 |
1.1 |
2.3 |
2.6 |
5.5 |
|
400x400 |
3 |
6 |
1.3 |
2.6 |
3 |
6 |
|
500x500 |
3.5 |
7 |
1.5 |
3 |
3.5 |
7 |
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