| Year | 1948 |
| Date | 24-Jun |
| Volume | 98 |
| Issue | 2,457 |
| Page | 665 |
| Category | Optical |
| Part | |
| Title | An Efficient and Cheap Episcope |
| Author | F.Mitchell |
| Notes | Making use of available war surplus material. Materials required, method of making, constructional details, the pressure plate, a general view, the light, the lens, the screen, the tripod stand and platform, the adjustable spot lamp, operation |