| Year | 1991 |
| Date | 21-Jun |
| Volume | 166 |
| Issue | 3,899 |
| Page | 684 |
| Category | Workshop |
| Part | 7 |
| Title | Gear Cutting |
| Author | Dave Lammas |
| Notes | Describes the construction of a dividing head to complement the gear cutting equipment already made. The hole-circle plates, data for dividing plates |