An optical system consisting of two or more lenses secured within a cylindrical sleeve. It is the component of an optical instrument nearest the eye of the observer when sighting. The distance between lenses is maintained by an optical element spacer. It usually has focusing facilities and may include a reticle, filter, and/or diopter scale.
Classification: Military equipments not identified by kind
NSN 6110-01-578-7369
NSN 5925-01-614-7426
NSN 5960-00-826-7697
NSN 5998-00-269-5444
NSN 5945-00-120-0074
NSN 5990-01-003-4209
NSN 5910-01-195-6256
NSN 6620-00-930-5680
NSN 5998-00-305-1558
NSN 6145-01-502-2898
NSN 5998-00-263-6073
NSN 6685-01-157-4244