| Year | 1953 |
| Date | 12-Feb |
| Volume | 108 |
| Issue | 2,699 |
| Page | 215 |
| Category | In the Workshop |
| Part | |
| Title | Additions to a Drilling Machine |
| Author | "Duplex" |
| Notes | A modified depthing stop and scale, the depthing scale, a work table stop collar, filed curved recesses, aligning the driving belt |