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 6240-01-272-4037
NSN 5855-00-973-5717
NSN 5945-00-034-1069
NSN 6645-00-410-2395
NSN 6145-01-485-4690
NSN 5835-01-642-4705
NSN 7035-01-494-1161
NSN 5835-01-364-6830
NSN 5998-01-359-1944
NSN 5920-01-227-9097
NSN 6150-01-206-4944
NSN 5965-01-573-9093