| Year | 2010 |
| Date | 10-Sep |
| Volume | 205 |
| Issue | 4,386 |
| Page | 344 |
| Category | Workshop |
| Part | 2 |
| Title | The cutting of helical gears |
| Author | D.A.G.Brown and Giles Parkes |
| Notes | Conclude their look at cutting helical gears. Opposite handed helices, help is at hand! Now for the Barber-Colman, postscript, spreadsheet, reference |