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 6150-01-083-7473
NSN 6220-01-394-4972
NSN 6620-01-026-0346
NSN 6105-00-202-2469
NSN 6610-01-112-0447
NSN 5998-01-333-8416
NSN 5945-01-113-7250
NSN 5999-00-577-9566
NSN 5895-00-785-8805
NSN 5910-00-233-7317
NSN 6110-01-441-7051
NSN 6105-01-350-9691