| Year | 1907 |
| Date | 28-Feb |
| Volume | 16 |
| Issue | 305 |
| Page | 207 |
| Category | Electronic |
| Part | |
| Title | Recent Developments in X-Ray Apparatus |
| Author | |
| Notes | Messrs W.Watson & Son's new moto- magnetic interrupter, Medical Supply Association's alternating current mercury jet interrupter & rectifier |