Trial Case (Bifocal Segments)

Catalogue Number: 2908
Trial Case (Bifocal Segments)
Category: Equipment
Sub-Category: Trial lens case
Year Of Publication/Manufacture: c1910
Time Period: 1900 to 1939
Description Of Item: Small wooden trial case covered in black leatherette with hinged lid & a hook clasp. Dark blue velvet lining to lid. Contains 12 pairs of cement bifocal lenses, Adds +0.75 to +3.50. (0.75 lens pair missing)Each 37 mm rim (nickel alloy) holds a flat plano glass lens onto which is cemented a 15 mm bifocal segment. Dimensions: W:13.8cm x D:10.5cm x H:5.2cm.
How Acquired: Donated by Estate of William Cooper, via Peter Lewis
Date Acquired: April 2016
Condition: Lenses: very good, Case:good except pin of hook clasp missing as are two lenses
Location: Archive office. East wall shelves unit 2

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