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 5920-00-045-4211
NSN 5950-00-719-7470
NSN 6620-00-229-2728
NSN 5990-01-564-3652
NSN 5920-01-171-9139
NSN 5945-01-634-0588
NSN 5935-01-105-8526
NSN 6240-00-275-1950
NSN 6145-01-073-1509
NSN 5895-01-251-6041
NSN 6685-01-083-6634
NSN 5835-01-073-2455