A color free item of transparent or translucent material, usually optical glass, having specific light dispersive and refractive properties. This item must have two plane-parallel surfaces and is designed for use in an optical instrument to provide a barrier to foreign matter and/or permit light transmission in or to the optical system.
Classification: Military equipments not identified by kind
NSN 6685-01-152-2846
NSN 6105-00-065-3795
NSN 6130-01-185-4225
NSN 5925-00-369-7747
NSN 6650-01-028-2820
NSN 5965-00-815-2525
NSN 5996-00-887-0595
NSN 6685-01-414-1296
NSN 5965-00-772-8024
NSN 5895-01-078-2332
NSN 6610-00-234-9390
NSN 5855-01-042-7990