| Diameter (mm) |
Nominal Curve |
True Front Curve |
Radius of Front Curvature |
SAG 50 (mm) |
True Back Curve |
Radius of Back Curvature |
C.T. (mm) |
E.T. (mm) |
| 75mm | 0.00 | 0.00 | 26500.00 | 0.01 | 5.70 | 92.98 | 8.50 | 16.00 |
| 75mm | 0.50 | 0.53 | 1000.00 | 0.31 | 5.70 | 92.98 | 9.60 | 16.00 |
| 75mm | 1.00 | 1.00 | 530.00 | 0.59 | 5.70 | 92.98 | 9.60 | 16.00 |
| 75mm | 2.00 | 1.98 | 267.68 | 1.17 | 5.70 | 92.98 | 10.80 | 16.00 |
| 75mm | 3.00 | 2.98 | 177.85 | 1.77 | 5.70 | 92.98 | 9.00 | 13.00 |
| 75mm | 4.00 | 3.99 | 132.83 | 2.37 | 5.70 | 92.98 | 10.50 | 13.00 |
| 75mm | 5.00 | 5.00 | 106.00 | 2.99 | 5.70 | 92.98 | 12.00 | 13.00 |
| 75mm | 6.00 | 6.02 | 88.04 | 3.62 | 5.70 | 92.98 | 8.70 | 8 |
| 75mm | 7.00 | 6.90 | 76.81 | 4.18 | 5.70 | 92.98 | 9.00 | 7.00 |
| 75mm | 8.00 | 8.05 | 65.84 | 4.93 | 5.70 | 92.98 | 11.00 | 7.00 |
| 75mm | 9.00 | 8.92 | 59.42 | 5.52 | 5.70 | 92.98 | 12.50 | 7.00 |
| 75mm | 10.00 | 10.08 | 52.58 | 6.32 | 5.70 | 92.98 | 14.50 | 7.00 |