Ophthalmic lens blank in crown glass of refractive index 1.523
- maker:
- Chance-Pilkington
Ophthalmic lens blank in crown glass of refractive index 1.523, very light green tint, type SGO, by Chance-Pilkington, St Asaph, Denbighshire, Wales, United Kingdom, 1986-1987
Details
- Category:
- Optics
- Object Number:
- 1987-12A
- Materials:
- glass
- Measurements:
-
overall: 9 mm 60 mm, .051kg
- type:
- ophthalmic lens blank