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 6610-01-327-3187
NSN 6150-01-317-0008
NSN 5895-01-064-1346
NSN 5998-00-431-4843
NSN 5996-01-497-6996
NSN 5996-01-512-2040
NSN 5960-00-273-3058
NSN 5895-00-168-8382
NSN 5905-01-555-8077
NSN 5975-01-140-0420
NSN 5999-00-879-0086
NSN 5910-00-409-7700