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 5915-00-244-1702
NSN 5990-01-472-2447
NSN 5905-01-642-9380
NSN 5915-01-074-2008
NSN 6610-00-186-9180
NSN 5985-01-555-8999
NSN 5996-00-054-4628
NSN 6220-01-544-7998
NSN 5935-01-333-8726
NSN 6220-01-379-8533
NSN 5960-00-913-4479
NSN 5950-01-462-3784