| Year | 1983 |
| Date | 18-Feb |
| Volume | 150 |
| Issue | 3,699 |
| Page | 203 |
| Category | Horology |
| Part | |
| Title | Timepiece. Drills Used in Horology |
| Author | John Wilding |
| Notes | Sharpening twist drills, the drill honing jig, other types of drills, which drills to buy? Making drills, hardening |