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Title | Maker | Date Made | |
Fernrohrbrille Aufsteckglas lens | Zeiss | Mid-late 20th c. | View |
Fernrohrbrille Aufsteckglas lenses | Zeiss | Mid-late 20th c. | View |
Monocular auxiliary lens | Mid 20th c. | View | |
Press-On Optics by OSG: -7.00 Dioptres | Optical Sciences Group, Inc. | c.1972 | View |
Press-On Optics by OSG: 20 Prism Dioptres | Optical Sciences Group, Inc. | c.1972 | View |