| Year | 1999 |
| Date | 08-Oct |
| Volume | 183 |
| Issue | 4,104 |
| Page | 460 |
| Category | Horology |
| Part | 15 |
| Title | A 3/4 Second Pendulum Electric Clock (C.R.Jones) |
| Author | John Wilding |
| Notes | Describes the motion work, cutting the wheels and pinions and depthing the wheel train. References |