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 5905-00-399-4630
NSN 5985-00-904-3318
NSN 5920-00-448-9917
NSN 6130-00-242-1465
NSN 5915-01-239-4435
NSN 5950-00-381-8549
NSN 5990-00-698-3963
NSN 5998-01-534-8512
NSN 6220-01-279-1331
NSN 6620-01-033-7566
NSN 6620-01-029-3705
NSN 5950-00-959-5988