| Year | 1994 |
| Date | 15-Apr |
| Volume | 172 |
| Issue | 3,967 |
| Page | 492 |
| Category | Right First Time |
| Part | 4 |
| Title | Making a Miniature Depth Gauge - From "What's to Hand" |
| Author | Rapier |
| Notes | Probes to suit every indentation, machining the gland nut, assembly of the depth gauge |