Glass ophthalmic lenses
 Catalogue Number: 1722 Glass ophthalmic lenses Category: Spectacles and lenses Sub-Category: Spectacle lenses Year Of Publication/Manufacture: Early to mid 20th C Time Period: 1900 to 1939 Place Of Publication/Manufacture: Rochester New York USA Publisher/Manufacturer: Bausch and Lomb Description Of Item: Several pairs of oval shaped glass biconcave lenses, cut but not bevelled, 43 x 33 mm, all -4.5 D sph in original paper wrapping indicating the manufacturer was Bausch and Lomb and the lenses are from the Centex range and are double standard thickness Historical Significance: These lenses were reported to wholesale for 3 shillings and six pence (35 cents) for each half dozen. Condition: Good Location: Archive office. East wall shelves unit 3. Drawer 3 |