| Year | 1947 |
| Date | 02-Oct |
| Volume | 97 |
| Issue | 2,419 |
| Page | 367 |
| Category | Horology |
| Part | |
| Title | The "Bulle" Type Electric Clock |
| Author | R.N.Gibbs |
| Notes | With its glass cover (photo by C.Newton), general arrangement of pendulum, correct placing of magnets, other details |