| Year | 1949 |
| Date | 21-Apr |
| Volume | 100 |
| Issue | 2,500 |
| Page | 485 |
| Category | Workshop |
| Part | |
| Title | Constructing a Gear-Cutting Machine |
| Author | J.S.Eley |
| Notes | Method of handling when cutting spirals, table, a pair of spiral gears produced for "1831", body, sliding block, feedscrew |