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 5965-01-218-5003
NSN 7035-01-317-4227
NSN 6105-00-553-8943
NSN 6110-01-023-6765
NSN 2925-00-169-3775
NSN 5998-01-029-2161
NSN 5905-01-211-1434
NSN 5835-00-969-5771
NSN 5920-00-420-3917
NSN 5835-01-158-6878
NSN 5960-01-416-6187
NSN 5920-01-454-2918