Preform offset head Ro=0.698W
| # | Angle | Facets | Notes |
|---|---|---|---|
| G1 | 90.00° | 64 131323363 | |
| G2 | 90.00° | 3293561 | |
| G3 | 90.00° | 4283660 | |
| G4 | 90.00° | 5273759 | |
| G5 | 90.00° | 6263858 | |
| G6 | 90.00° | 7253957 | |
| G7 | 90.00° | 8244056 | |
| G8 | 90.00° | 2303462 | |
| P1 | 48.54° | 6263858 | Meet P3-P5 at girdle |
| P2 | 48.39° | 8244056 | Meet P2-P3-P6 |
| P3 | 47.28° | 4283660 | Meet P1-P3-P4 |
| P4 | 46.00° | 5273759 | Meet P1-P2 |
| P5 | 44.00° | 1313363 | Meet P1 at girdle |
| P6 | 41.00° | 6432 | Locate girdle and culet line |
| P7 | 34.31° | 1648 | Meet girdle at approx height of P1 |
| # | Angle | Facets | Notes |
|---|---|---|---|
| C1 | 45.65° | 8244056 | |
| C2 | 44.00° | 1313363 | Fix girdle thickness |
| C3 | 43.00° | 6263858 | |
| C4 | 42.42° | 4283660 | |
| C5 | 37.00° | 6432 | Meet A-A-girdle |
| C6 | 35.00° | 5273759 | Meet B-C-girdle |
| C7 | 28.00° | 2303462 | Meet A-B-F-G |
| C8 | 22.01° | 1648 | Meet D-D-girdle |
| C9 | 20.10° | 7253957 | Meet C-D-E-F |
| T | 0.00° | 64 |