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 2925-01-291-9997
NSN 5935-01-053-6521
NSN 5945-01-060-3216
NSN 5905-01-135-2851
NSN 5950-01-463-3096
NSN 7035-01-376-0359
NSN 6150-00-134-9101
NSN 5905-01-225-8976
NSN 6645-00-641-3202
NSN 2925-01-446-6976
NSN 4140-01-367-5824
NSN 5945-01-555-8373