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 5990-01-106-7459
NSN 5930-01-248-7171
NSN 5950-00-916-5805
NSN 6135-01-067-8331
NSN 5996-01-014-5852
NSN 5910-01-622-5674
NSN 6645-01-544-3581
NSN 6620-01-244-3425
NSN 5915-00-018-8254
NSN 6135-01-317-6021
NSN 5975-01-472-4201
NSN 6645-01-518-1107