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 6105-00-715-0842
NSN 6135-00-557-8874
NSN 5999-00-865-4511
NSN 5999-01-611-7324
NSN 5960-00-134-0607
NSN 6135-01-468-6491
NSN 6110-01-165-1669
NSN 6685-01-104-8791
NSN 5835-01-426-6573
NSN 6320-01-512-2031
NSN 6620-00-286-5721
NSN 5935-01-315-7448