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.
NSN 5960-01-439-3731
NSN 6150-00-130-2657
NSN 6685-00-973-4662
NSN 4140-01-124-0623
NSN 6645-00-145-6411
NSN 5855-00-198-3197
NSN 6610-00-618-0772
NSN 6110-01-025-1286
NSN 5915-01-132-9123
NSN 5975-01-385-8039
NSN 4140-01-590-5157
NSN 6130-01-608-4029