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| Title | Maker | Date Made | |
| Barrett Sub-Normal Vision Monocular and Testing Set | London Optical Company | 20th c. | View |
| Barrett Sub-Normal Vision Monocular and Testing Set | London Optical Co; Levers Optical Co Ltd | 20th c. | View |
| Lederer microscopes | c.1953-1954 | View | |
| Lederer-type microscopes (Stigmagna lenses) | Stigmat Ltd | Late 1950s | View |
| microscopes (hyperoculars) | Combined Optical Industries Ltd | c.1956 | View |