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High Precision Ronchi Rulings
Original price was: $174.00.$97.99Current price is: $97.99.
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High Precision Ronchi Ruling Glass targets are excellent for evaluating resolution, field distortion, and parfocal stability. Many different Linepairs Per Inch (LPI) and Linepairs Per Millimeter (lp/mm) versions available. 1″, 2″, 4″ and 6″ squares available.
- Chrome on Glass
- High Tolerance
- Superior to Etched and Filled Rulings
- Lines Parallel to Edge
- English and Metric Versions
| Coating | Vacuum Deposited Chrome, OD >3.0 |
|---|---|
| Dimensional Tolerance (inches) | ±0.02 |
| Substrate | Float Glass |
| Optical Density OD (Average) | 3.00 |
| Surface Quality | 60-40 |
| Thickness (mm) | 1.50 |
| Dimensional Tolerance (mm) | ± 0.02 |
| Line to Line Parallelism (arcsec) | ≤2 |
| Parallelism of Pattern to Substrate (°) | ±1 |
| Surface Flatness (P-V) | 1λ |
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