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 5950-01-308-5623
NSN 5915-00-011-8348
NSN 5905-01-187-4754
NSN 6220-00-531-6430
NSN 5960-01-369-3628
NSN 5915-01-067-2789
NSN 2925-00-099-4030
NSN 6620-00-248-9513
NSN 5960-01-072-7118
NSN 5905-01-290-6941
NSN 6610-01-283-5629
NSN 5920-00-014-5004