Light deviation in any meridian not to exceed 2 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 6685-01-378-7090
NSN 6650-01-428-9958
NSN 5920-01-463-3525
NSN 5835-01-347-6362
NSN 5855-01-352-7033
NSN 5935-01-284-0025
NSN 5945-00-127-2485
NSN 6620-01-481-1358
NSN 6620-00-730-6368
NSN 5905-00-378-0312
NSN 5985-01-461-3113
NSN 5960-01-190-2996