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 5915-00-203-5890
NSN 5990-00-357-8103
NSN 5930-01-142-7058
NSN 6645-01-463-4314
NSN 6685-00-167-2817
NSN 6645-01-024-0409
NSN 5915-01-197-6218
NSN 6105-00-849-5458
NSN 6105-01-541-4811
NSN 5915-00-156-2083
NSN 6145-01-085-6249
NSN 7035-01-474-2768