| Year | 1992 |
| Date | 07-Feb |
| Volume | 168 |
| Issue | 3,914 |
| Page | 131 |
| Category | Correction |
| Part | |
| Title | A Hydraulic Ram |
| Author | Jernej Bohm (Yugoslavia) |
| Notes | Makes a hydraulic ram using standard plumbing fittings and a disused gas bottle. How does it function, construction, connecting, starting, characteristics, a few more instructions |