Oval white convex spectacle lens with a grooved edge

Oval white convex spectacle lens with a grooved edge  (for the

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Oval white convex spectacle lens with a grooved edge (for the
Science Museum Group
© The Board of Trustees of the Science Museum

Oval white convex spectacle lens with a grooved edge (for the correction of hypermetropia and presbyopia).

Details

Category:
Optics
Object Number:
1921-323/28
Measurements:
overall: 41 x 32 mm
type:
ophthalmic lens
credit:
Dunscombe collection of spectacles