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 6650-01-446-2025
NSN 5950-00-609-4361
NSN 6150-00-227-6651
NSN 5895-01-012-0930
NSN 5910-01-599-3961
NSN 6620-01-133-4193
NSN 6130-01-543-3552
NSN 6645-01-122-3803
NSN 5910-00-959-4894
NSN 2925-01-065-0060
NSN 6645-01-545-5536
NSN 5920-00-373-3636