A cylindrical item usually having a flanged aperture designed to hold and mount an instrument in a predetermined position. Excludes holder, watch.
NSN 5996-00-225-7737
NSN 6610-01-250-2811
NSN 5935-01-535-4314
NSN 5835-01-383-1313
NSN 2925-01-143-0092
NSN 6685-00-893-0111
NSN 6620-01-656-5766
NSN 6685-01-625-9138
NSN 5996-01-606-6603
NSN 5945-00-165-2691
NSN 5999-01-227-2107
NSN 7035-01-106-3476