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 5930-01-408-5586
NSN 6105-00-459-5261
NSN 6145-00-793-7816
NSN 2925-01-590-3981
NSN 5999-00-111-8569
NSN 5930-01-542-8759
NSN 6135-01-226-4071
NSN 5999-01-409-2834
NSN 6650-01-429-9242
NSN 7035-00-981-7216
NSN 5930-01-473-2013
NSN 6220-01-116-2411