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 5915-00-862-2740
NSN 5835-01-498-9410
NSN 5905-00-012-4385
NSN 5835-01-010-3103
NSN 5915-00-130-1796
NSN 5996-01-356-9946
NSN 6220-01-536-1067
NSN 6110-01-500-0768
NSN 5960-00-452-0452
NSN 6110-00-585-8920
NSN 6130-01-284-3107
NSN 5895-01-023-7893