| Year | 1956 |
| Date | 22-Mar |
| Volume | 114 |
| Issue | 2,861 |
| Page | 492 |
| Category | Historic |
| Part | |
| Title | 50 years ago |
| Author | |
| Notes | 1. Steam governor (Thompson, see 14 253 198). Operation of the mechanism. 2. Petrol roller skates. Too fast for owner? See 14 246 30 and 14 255 247 |