Light deviation not to exceed 5 min of arc and surface quali type 80-50
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 6685-01-413-9362
NSN 5996-00-566-9253
NSN 6620-00-312-2036
NSN 6620-01-462-1625
NSN 5999-01-440-5182
NSN 5855-00-560-0110
NSN 6645-00-152-8498
NSN 5855-01-500-6617
NSN 6220-00-858-2456
NSN 4140-00-879-6418
NSN 5895-01-346-8300
NSN 6150-00-189-0292