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 5925-01-206-3488
NSN 5960-01-183-3779
NSN 5960-01-507-9112
NSN 5985-00-429-0232
NSN 6610-01-467-4582
NSN 6240-01-441-3606
NSN 5935-00-910-1484
NSN 5905-01-440-7331
NSN 5930-01-147-3598
NSN 5915-01-263-9906
NSN 6150-00-823-2495
NSN 5905-01-214-5569