English 'invisible fused' bifocal spectacles with oval lenses and semi-circular segments

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

Made:: 1905 in England

English 'invisible fused' bifocal spectacles with oval lenses

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

English 'invisible fused' bifocal spectacles with oval lenses and semi-circular segments. Patent No. 18158, in 1905, stamped Dunscombe, Bristol

Details

Category:: Optics

Object Number:: 1921-323/194

Materials:: steel (metal) and glass

Measurements:: overall: 33 mm x 160 mm x 25 mm, , .01kg

type:: spectacles

credit:: Dunscombe collection of spectacles

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