| Year | 1939 |
| Date | 16-Mar |
| Volume | 80 |
| Issue | 1,975 |
| Page | 303 |
| Category | Crane |
| Part | |
| Title | A Model Hydraulic Crane |
| Author | W.Heley |
| Notes | Photograph showing operating mechanism, details of the luffing and slewing cylinders, the lifting cylinder, sectional drawing of mast - front and side views |