A cylindrical item usually having a flanged aperture designed to hold and mount an instrument in a predetermined position. Excludes holder, watch.
NSN 6110-01-411-6608
NSN 4140-01-337-4992
NSN 6685-01-024-9508
NSN 6135-01-201-5858
NSN 5965-00-194-9428
NSN 5998-01-393-2272
NSN 5930-01-414-1287
NSN 5990-00-873-3079
NSN 6650-01-280-9353
NSN 6105-01-571-2072
NSN 5895-00-501-4914
NSN 5920-01-437-8129