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 6620-00-990-3385
NSN 5999-01-123-9060
NSN 7035-00-620-6835
NSN 5996-01-321-1192
NSN 5905-00-233-9392
NSN 6610-00-925-0935
NSN 5920-01-575-0177
NSN 6645-01-012-7670
NSN 6650-01-078-5587
NSN 5915-01-431-4256
NSN 6220-00-479-9171
NSN 5895-00-869-8653