| Year | 1951 |
| Date | 17-May |
| Volume | 104 |
| Issue | 2,608 |
| Page | 643 |
| Category | In The Workshop |
| Part | 89 |
| Title | A Screwcutting Attachment for the Drummond 3 1/2-in. Lathe |
| Author | "Duplex" |
| Notes | Fitted to the lathe, the quadrant assembly, construction, clamp lever, gear wheel studs, details, the wheel pivots, working conditions |