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 5965-01-370-1891
NSN 5999-01-152-7432
NSN 5895-01-034-1620
NSN 5835-01-150-6084
NSN 7035-00-206-6123
NSN 5895-00-367-9619
NSN 6145-01-156-0284
NSN 5910-01-515-3016
NSN 5935-00-752-3067
NSN 6145-00-205-4046
NSN 5990-01-481-3080
NSN 6240-00-361-1421