Schenck, Ernest G; Official Gazette for Patents (US), Feb 1910;
| # | Angle | Facets | Notes |
|---|---|---|---|
| G1 | 90.00° | 1 3 5 7 911131517192123252729313335373941434547495153555759616365676971737577798183858789919395 | |
| P1 | 43.62° | 3 91521273339455157636975818793 | |
| P2 | 43.00° | 4 81620283240445256646876808892 |
| # | Angle | Facets | Notes |
|---|---|---|---|
| C1 | 41.34° | 3 91521273339455157636975818793 | |
| C2 | 37.00° | 618304254667890 | |
| C3 | 33.58° | 9612243648607284 | |
| T | 0.00° | 96 |