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 2925-01-595-9720
NSN 5910-01-480-0845
NSN 2925-00-185-1618
NSN 5960-01-024-3729
NSN 5895-01-168-9754
NSN 5905-00-444-5569
NSN 5835-01-238-3381
NSN 5960-01-641-5493
NSN 6240-00-872-3365
NSN 5965-01-296-8991
NSN 6685-00-833-8379
NSN 5835-01-163-4215