| Year | 1936 |
| Date | 17-Dec |
| Volume | 75 |
| Issue | 1,858 |
| Page | 585 |
| Category | Optical |
| Part | |
| Title | Simple Optical Projectors |
| Author | "Kinemette" |
| Notes | Constructing a simple episcope, construction, details of angle framing and lens tunnel, floor plate, illuminating system, light trap for roof ventilator |