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 6105-00-372-4716
NSN 6110-01-383-6517
NSN 6320-01-359-3921
NSN 5910-01-050-8451
NSN 5945-01-514-1719
NSN 5960-01-142-1995
NSN 7035-00-166-0339
NSN 5975-01-032-4641
NSN 5999-01-323-6676
NSN 6105-01-526-8402
NSN 5960-01-111-7923
NSN 5965-01-373-8858