Model: 650BC,400ADD,28MMFT,71MM
Se Bifocal Ophthalmic Lens BlankSpecial Features:
6.50 diopter base curve; cr-39, convex, index refraction 1.498 on carrier lens
Properties:
A transparent optical element consisting of a major blank and a bifocal segment. The blank and segment have been pressed in a glass mold to an approximate size and shape, and are ground and polished to a finished diopter curvature on one surface only.
Part 650BC,400ADD,28MMFT,71MM NSN 6540-01-374-8876
Material Classification
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicatorsFreight Classification
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Schedule B and Export
- Schedule B: 7014001000
- SITC: 66595
- End Use: Other industrial supplies
- NAICS: 327212
- USDA: 1
Freight Class: Lens blanks (other than for spectacles) not optically worked, of glass, (optical elements)
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