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Transitions®
Plus Grey CR-39® (Standard Index 1.501) 75mm Diameter Lens Blank |
| Nominal Curve | True Curve | Radius (mm) | SAG at 50mm | Nominal Concave | Center Thickness | Edge Thickness |
| 0.50 | 0.44 | 1204.545 | 0.26 | 4.00 | 10.5 | 15.9 |
| 2.25 | 2.10 | 252.381 | 1.24 | 4.00 | 10.5 | 13.6 |
| 4.25 | 4.30 | 123.256 | 2.56 | 4.00 | 10.5 | 10.5 |
| 6.25 | 6.22 | 85.209 | 3.75 | 6.00 | 8.5 | 8.9 |
| 8.25 | 8.28 | 64.010 | 5.08 | 6.00 | 12.0 | 8.8 |