| Year | 1936 |
| Date | 12-Nov |
| Volume | 75 |
| Issue | 1,853 |
| Page | 472 |
| Category | Optical |
| Part | |
| Title | Simple Optical Projectors. Introductory Notes to the "M.E." Cine-Projector |
| Author | "Kinemette" |
| Notes | Principle of the mirror arc projection system, the illuminant, the Ensign "Optiscope" (model 6A), reflectors, the objective system, Petzval objective lens, tubular cluster filament electric lamp & Mangin mirror, carrier for rapid slide changing, the stage |