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 5990-01-485-0260
NSN 5990-01-112-5281
NSN 7035-00-054-3414
NSN 6650-01-631-0783
NSN 6320-01-380-7372
NSN 5930-00-450-9922
NSN 5990-00-010-1413
NSN 6620-01-352-0364
NSN 5999-01-067-9012
NSN 5855-01-028-8387
NSN 5930-00-721-4305
NSN 5905-00-422-0567