| Year | 1932 |
| Date | 21-Apr |
| Volume | 66 |
| Issue | 1,615 |
| Page | 370 |
| Category | Horology |
| Part | |
| Title | The "Synclock" Frequency Motor. |
| Author | Geo. Gentry |
| Notes | A Clock which is controlled by the Frequency of the A.C. Supply. The Warren master frequency meter, the "Synclock" and its motor, the motor |