Sample of radiation shielding glass used for medical and industrial X-ray units operating in the region of 100-200 KV, by Chance-Pilkington, St. Asaph,Clwyd, Wales, 1980. Sample of radiation shielding glass used for medical and industrial X-ray units operating in the region of 100-200 KV 1980
Sample of photochromic glass, one of two, by Chance-Pilkington, St. Asaph,Clwyd, Wales, 1980. Sample of photochromic glass 1980
Ophthalmic lens blank in Slimline 730 high-index glass, refractive index 1.7, clear, by Chance-Pilkington, St Asaph, Denbighshire, Wales, United Kingdom, 1986-1987 Ophthalmic lens blank in Slimline 730 high-index glass 1986-1987
Ophthalmic lens blank in Slimline Brown 730 high-index glass refractive index 1.8, brown tint, by Chance-Pilkington, St Asaph, Denbighshire, Wales, United Kingdom, 1986-1987 Ophthalmic lens blank in Slimline Brown 730 high-index glass refractive index 1.8 1986-1987
Ophthalmic lens blank in Slimline 730 high-index glass, refractive index 1.7, clear, by Chance-Pilkington, St Asaph, Denbighshire, Wales, United Kingdom, 1986-1987 Ophthalmic lens blank in Slimline 730 high-index glass 1986-1987
Variable wavelength hologram by P. E. Pilkington Ltd., St. Asaph, Clwyd, Wales, 1985. Originally shown in metal frame/stand. Variable Wavelength Hologram 1985
Sample of photochromic glass, one of two, by Chance-Pilkington, St. Asaph,Clwyd, Wales, 1980. Sample of photochromic glass 1980