| Year | 1952 |
| Date | 14-Aug |
| Volume | 107 |
| Issue | 2,673 |
| Page | 208 |
| Category | Photographic |
| Part | |
| Title | A Ball and Socket Camera Tripod-Head |
| Author | A.R.Turpin |
| Notes | The two sizes, general assembly, construction, detail drawings, suggested general arrangement for a spherical turning tool |