Mozambique Granite square ruler
The main mineral composition of granite is pyroxene, plagioclase, a small amount of olivine, biotite and trace magnetite, black color, precise structure, after millions of years of aging, uniform texture, good stability, high strength, high hardness, can maintain high precision under heavy load.
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Product Description
The main mineral composition of granite is pyroxene, plagioclase, a small amount of olivine, biotite and trace magnetite, black color, precise structure, after millions of years of aging, uniform texture, good stability, high strength, high hardness, can maintain high precision under heavy load. Suitable for industrial production and laboratory measurement work.
Technical parameters
| Specifications (Mm) |
Verticality of two adjacent measuring surfaces | Measuring surface straightness | Parallelism of relative measuring surface | |||
| Accuracy class (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 |
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