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 5895-00-489-6114
NSN 6110-01-304-7679
NSN 5965-00-391-0562
NSN 5935-00-244-7759
NSN 6685-00-115-6013
NSN 6110-01-625-3837
NSN 5998-01-269-5870
NSN 5895-01-566-9459
NSN 5910-00-535-3892
NSN 5920-01-506-6992
NSN 5950-01-444-1302
NSN 5905-01-222-5874