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Granite Straight Edges
Luthra Granite straight edges are produced from black granite. These straightedges are used for setting up machine bases by using spirit /electronic level and reference surface. Both the narrow working faces of granite straight edge are parallel and straight as per standards.
Standard sizes and accuracy of granite straight edge as per Grade-1
Sizes
L x B x H
mm |
Accuracy in Microns
um |
| Straightness |
Parallelism |
| 1000x 150 x 75 |
10 |
10 |
| 1500 x 200 x 75 |
15 |
15 |
| 2000 x 200 x 75 |
20 |
20 |
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