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 6135-01-529-0122
NSN 6320-00-823-2015
NSN 5998-00-458-4688
NSN 5960-00-038-5433
NSN 5999-01-389-6536
NSN 6620-01-633-5142
NSN 5920-01-569-2896
NSN 5998-01-319-9826
NSN 6220-00-262-7863
NSN 5965-01-495-1170
NSN 5910-00-015-7507
NSN 5965-01-212-6817