| Year | 1955 |
| Date | 14-Jul |
| Volume | 113 |
| Issue | 2,825 |
| Page | 50 |
| Category | In the Workshop |
| Part | |
| Title | A Hydraulic Engine Governor |
| Author | Duplex |
| Notes | The governor drive, piston and return spring, the inlet-valve mechanism, driving gear components, the governor in operation, lever assembly |