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 5920-01-494-8101
NSN 5925-01-550-6106
NSN 6135-01-375-6724
NSN 6150-01-575-5076
NSN 5910-01-400-0891
NSN 6650-01-394-2646
NSN 6320-00-242-3300
NSN 5930-01-466-2473
NSN 5950-00-051-7113
NSN 5985-00-283-3085
NSN 6110-01-226-6568
NSN 6320-00-108-7049