| Year | 1960 |
| Date | 18-Feb |
| Volume | 122 |
| Issue | 3,058 |
| Page | 206 |
| Category | Photographic |
| Part | 3 |
| Title | Extension arm for adjusting the workshop camera diaphram |
| Author | Norman Hallows |
| Notes | Workshop camera improvements. Extension arm, increasing depth of focus, machining the ball, avoiding exposure errors |