| Year | 1952 |
| Date | 05-Jun |
| Volume | 106 |
| Issue | 2,663 |
| Page | 739 |
| Category | Horology |
| Part | |
| Title | A Half-seconds Electric Clock |
| Author | C.R.Jones |
| Notes | Contact rocker, trigger block, assembly of pendulum motor, side view of wheelwork, plates, count-wheel and spindle |