English 'invisible cemented' bifocal spectacles with oval lenses and round segments

PART OF:: Display board of spectacles and lenses, c.1921

Made:: 1899 in England

English 'invisible cemented' bifocal spectacles with oval

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English 'invisible cemented' bifocal spectacles with oval
Science Museum Group
© The Board of Trustees of the Science Museum

English 'invisible cemented' bifocal spectacles with oval lenses and round segments. Patent No. 10773, in 1899.

Details

Category:: Optics

Object Number:: 1921-323/193

Materials:: steel (metal) and glass

Measurements:: overall: 35 mm x 155 mm x 30 mm, , .015kg

type:: spectacles

credit:: Dunscombe collection of spectacles

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