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 5998-00-256-9469
NSN 6685-01-398-0189
NSN 5930-01-549-4180
NSN 5945-00-517-9566
NSN 6220-01-448-9477
NSN 6220-00-253-3836
NSN 2925-01-559-5733
NSN 4140-01-111-8297
NSN 6110-01-549-6184
NSN 6150-01-223-1615
NSN 5965-00-468-3071
NSN 6620-01-131-6980