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 5960-01-092-4069
NSN 6105-00-468-3529
NSN 5920-01-497-7618
NSN 5945-01-634-0588
NSN 5930-01-423-5859
NSN 6610-00-971-2503
NSN 6110-01-461-0649
NSN 6240-01-067-6457
NSN 6150-00-104-4572
NSN 7035-01-383-6549
NSN 6685-01-304-6433
NSN 6645-01-465-4915