Blue spherical- cylinder concave spectacle lens

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

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Blue spherical- cylinder concave spectacle lens (for the
Science Museum Group
© The Board of Trustees of the Science Museum

Blue spherical- cylinder concave spectacle lens (for the correction of astigmatism)

Details

Category:: Optics

Object Number:: 1921-323/39

Measurements:: overall: 43 x 43 mm

type:: ophthalmic lens

credit:: Dunscombe collection of spectacles

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