Square 'Kryptok' fused slab and segment

Square 'Kryptok' fused slab and segment

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Square 'Kryptok' fused slab and segment
Science Museum Group
© The Board of Trustees of the Science Museum

Square 'Kryptok' fused slab and segment, light 'Chlorophylle' tint, stage in making bi-focal spectacle lens.

Details

Category:
Optics
Object Number:
1921-323/65
Measurements:
overall: 45 x 45 mm
type:
ophthalmic lens
credit:
Dunscombe collection of spectacles