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 6105-01-468-1647
NSN 5965-00-035-4556
NSN 6620-00-241-5264
NSN 5996-01-127-5431
NSN 5855-01-537-3481
NSN 6240-01-109-4680
NSN 5998-01-614-5442
NSN 5895-01-527-8095
NSN 5930-00-681-5898
NSN 6145-01-408-6272
NSN 5999-00-525-4320
NSN 5905-01-157-9535