Nominal Tetrahedron Volume
| Bar Size (mm) | X (mm) | Y (mm) | Z (mm) |
| 400 | 400 | 346 | 327 |
| 1000 | 1000 | 866 | 817 |
| 1500 | 1500 | 1299 | 1225 |
| 2000 | 2000 | 1740 | 1633 |
Technical Specifications
| Model | Bar Length | Weight | Certified Accuracy | Long-term stability |
| SRS400 | 400mm (20") | 3kg (7lbs) | ±1.0 to 5.0 µm (40 to 200 µ") | <10 µm |
| SRS1000 | 1000mm (40") | 4kg (9lbs) | ±1.0 to 5.0 µm (40 to 200 µ") | <10 µm |
| SRS1500 | 1500mm (60") | 5kg (11lbs) | ±1.0 to 5.0 µm (40 to 200 µ") | <10 µm |
| SRS2000 | 2000mm (80") | 6kg (13lbs) | ±1.0 to 5.0 µm (40 to 200µ") | <10 µm |
The Coefficient of Thermal Expansion (CTE) of the INORAsrs bars is -0.1µm/m/K, which compares favorably with the materials used in traditional artifacts as follows:
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Nominal Tetrahedron Volume
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