A cylindrical item usually having a flanged aperture designed to hold and mount an instrument in a predetermined position. Excludes holder, watch.
NSN 5998-01-608-4192
NSN 5996-00-122-9453
NSN 5915-01-386-4402
NSN 5895-01-100-1477
NSN 6650-00-532-8125
NSN 6240-01-615-8454
NSN 6130-01-015-9447
NSN 5915-00-912-5873
NSN 6110-01-201-4251
NSN 5915-01-141-0525
NSN 5960-01-485-2467
NSN 5905-00-442-4236