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Title | Maker | Date Made | |
bifocal segment measure | Pastore Enterprises | 1976 | View |
bifocal segment measure | Raphael's Ltd | Early 1970s | View |
London Segment Height Determinator | London Optical Company Ltd | mid 20th c. | View |
London Segment Height Determinator | London Optical Company Ltd | mid 20th c. | View |
Seg-Determinator | Pell Optical Co; London Optical Company Ltd | 20th c. | View |
Ultravue Dispensing Template | American Optical Company | Late 1970s? | View |