| Year | 1941 |
| Date | 03-Apr |
| Volume | 84 |
| Issue | 2,082 |
| Page | 267 |
| Category | Optical |
| Part | |
| Title | Basil's Periscope |
| Author | Leo Brearley (Australia) |
| Notes | An easily constructed device. A simple and straightforward job, Basil using his periscope, not so good! The gate attachment, elevations and cross section |