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 6135-01-483-5269
NSN 5855-01-602-9218
NSN 6145-00-860-9203
NSN 5945-01-521-9201
NSN 5945-00-308-5426
NSN 6685-01-208-2132
NSN 5905-01-644-6445
NSN 5960-01-039-2221
NSN 5855-01-439-0448
NSN 6110-00-812-0226
NSN 6620-01-515-6269
NSN 5920-01-561-2942