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| Title | Maker | Date Made | |
| Flat Lenses and Frame Measurement Examination - Key to Rx | British Optical Association | 1960s | View |
| Flat Lenses and Frame Measurements Examination - Key to Rx | British Optical Association | 1960s | View |
| Key To Flat Lenses Spectacles. Neutralisation Examination. | British Optical Association | 1960s | View |
| Particulars of spectacles used in the Neutralising Examination - Curved Lenses | British Optical Association | 1960s | View |