This granite square ruler is mainly used to test the verticality or degree of parallelism. It is manufactured in accordance with the standard of GB6092-85. We can customize precision granite square rulers of special or large sizes.
ParametersType (mm) | Squareness between Adjacent Measuring Surfaces | Straightness of Measuring Surface |
Parallelism between Opposite Measuring Surfaces |
|||
Precision grade (μm) | ||||||
00 | 0 | 00 | 0 | 00 | 0 | |
160 × 160 | 2 | 4 | 0.8 | 1.7 | 2 | 4 |
200 × 200 | 2 | 4 | 0.9 | 1.8 | 2 | 4 |
250 × 250 | 2.2 | 4.5 | 1 | 2 | 2.2 | 4.5 |
300 × 300 | 2.6 | 5.2 | 1.1 | 2.3 | 2.6 | 5.5 |
400 × 400 | 3 | 6 | 1.3 | 2.6 | 3 | 6 |
500 × 500 | 3.5 | 7 | 1.5 | 3 | 3.5 | 7 |
Hebei Jingda Machine Tools Manufacturing Co., Ltd.
Add.:#4 Road, Industrial Development Zone, Botou City, Hebei Province, China.
Tel:
+86-317-5561573
+86-317-8225222
Fax: +86-317-8294068
E-mail:
juliet@jingdagroup.net
alex@jingdagroup.net