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 6130-01-013-3508
NSN 5990-01-205-5937
NSN 5930-01-003-6019
NSN 5960-00-611-7175
NSN 6650-00-187-5388
NSN 4140-01-560-4022
NSN 5965-01-210-7784
NSN 6105-00-253-3828
NSN 6320-00-228-5678
NSN 6105-00-406-9545
NSN 6150-01-201-1706
NSN 6685-01-207-1412