| Year | 1999 |
| Date | 01-Jan |
| Volume | 182 |
| Issue | 4,084 |
| Page | 26 |
| Category | Horology |
| Part | 5 |
| Title | A 3/4 Second Pendulum Electric Clock (C.R.Jones) |
| Author | John Wilding |
| Notes | Pendulum bob. The Peatol 3-jaw chuck, a lead cased bob, end cap, casting the lead, graining the case, reference |