Granite Straight Edges are produced from black granite. These granite straight edges are used for setting up machine bases by using spirit and electronic level and reference surface. Both the narrow working faces of granite straight edges are parallel and straight as per standards.
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Standard sizes and accuracy of granite straight edge as per Grade-1:
| Sizes LxBxH mm |
Accuracy in Microns um Straightness Parallelism |
| lOOOx 150 x 75 | 10 10 |
| 1500 X 200 X 75 | 15 15 |
| 2000 X 200 X 75 | 20 20 |