A cylindrical item usually having a flanged aperture designed to hold and mount an instrument in a predetermined position. Excludes holder, watch.
NSN 2925-00-118-4887
NSN 5920-00-314-6870
NSN 5975-01-201-1019
NSN 6645-01-461-9250
NSN 4140-00-580-8508
NSN 5920-00-779-9560
NSN 5990-01-426-7350
NSN 6240-01-126-4461
NSN 6150-00-276-7483
NSN 6645-01-008-2720
NSN 6150-00-903-5049
NSN 5985-01-195-6936