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 5835-01-426-6573
NSN 5920-01-608-4166
NSN 7035-01-223-4097
NSN 5999-01-550-8860
NSN 4140-00-704-7615
NSN 5930-01-641-7480
NSN 5945-00-068-3531
NSN 5985-00-933-6675
NSN 6620-01-119-9239
NSN 6135-00-209-6918
NSN 5999-00-618-1040
NSN 5855-00-237-4088