A cylindrical item usually having a flanged aperture designed to hold and mount an instrument in a predetermined position. Excludes holder, watch.
NSN 5835-00-554-0399
NSN 5935-01-350-2438
NSN 5999-01-430-3510
NSN 5835-01-416-6455
NSN 6105-00-657-4903
NSN 6645-00-616-1289
NSN 5895-01-102-5129
NSN 5895-00-901-5769
NSN 6110-00-834-4756
NSN 5990-01-202-7003
NSN 5915-01-248-6870
NSN 5999-00-198-3959