Round 'Kryptok' fused slab and segment
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Science Museum Group
© The Board of Trustees of the Science Museum
Round 'Kryptok' fused slab and segment, dark 'Chlorophylle' tint, stage in making bi-focal spectacle lens.
Details
- Category:
- Optics
- Object Number:
- 1921-323/69
- Measurements:
-
overall: 48 mm
- type:
- ophthalmic lens
- credit:
- Dunscombe collection of spectacles
