| Year | 1951 |
| Date | 05-Jul |
| Volume | 105 |
| Issue | 2,615 |
| Page | 10 |
| Category | Photographic |
| Part | |
| Title | Camera Construction |
| Author | Andrew Todd |
| Notes | Thrust blocks, focussing-screw, nut, knob, sliding block, locking screws, collets, clamping nuts, feathers, revolving blocks, studs, cross-slide, bridle, knobs |