| Year | 1921 |
| Date | 17-Nov |
| Volume | 45 |
| Issue | 1,073 |
| Page | 431 |
| Category | Practical Letters from Our Readers |
| Part | |
| Title | Electric Clocks, Batteries, and an Appreciation |
| Author | William Newman |
| Notes | Views of a "Synchronome" time transmitter, arrangement of cell for electric clock circuits, chiming & striking secondary electric clock |