| Year | 1941 |
| Date | 18-Sep |
| Volume | 85 |
| Issue | 2,106 |
| Page | 234 |
| Category | Photographic |
| Part | |
| Title | A Photographic Enlarger |
| Author | T.W.Ridge |
| Notes | A Simple Design for a Modern Vertical Type for Construction in the Home Workshop. Details of focussing adjustment, negative carrier, development of lantern |