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 5945-01-061-7659
NSN 5925-00-539-5324
NSN 5965-01-469-7401
NSN 5998-01-565-6185
NSN 5960-00-300-2358
NSN 5996-01-055-8608
NSN 6105-01-129-5731
NSN 5835-01-647-6426
NSN 6130-01-306-5644
NSN 5915-01-168-5813
NSN 6685-01-217-0284
NSN 5935-01-027-1866