| Year | 1966 |
| Date | 20-May |
| Volume | 132 |
| Issue | 3,297 |
| Page | 443 |
| Category | Horology |
| Part | 2 |
| Title | A Weight-Driven Regulator Timepiece |
| Author | Claude B.Reeve |
| Notes | The maintaining springs, the maintaining click, the barrel ratchet click, retaining collet, the centre wheel and pinion, the escape wheel, lantern pinions, constructing the pinions, centre pinion arbor, third wheel and pinion, escape wheel and pinion |