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 6650-01-355-9740
NSN 5930-01-458-3721
NSN 5895-01-335-9354
NSN 4140-01-023-8846
NSN 6650-01-068-5021
NSN 5965-01-086-3126
NSN 6130-01-608-2106
NSN 5945-01-562-9612
NSN 6220-01-091-2470
NSN 5920-01-451-6501
NSN 5998-00-325-0974
NSN 5835-01-449-7511