A cylindrical item usually having a flanged aperture designed to hold and mount an instrument in a predetermined position. Excludes holder, watch.
NSN 4140-01-459-9275
NSN 5935-01-143-3960
NSN 5990-00-212-4316
NSN 5835-00-482-0924
NSN 5905-01-387-3873
NSN 5835-01-218-3756
NSN 5945-01-323-1471
NSN 5985-01-004-6453
NSN 5895-01-647-4887
NSN 2925-01-617-6302
NSN 5930-00-116-4947
NSN 5935-01-605-3403