A cylindrical item usually having a flanged aperture designed to hold and mount an instrument in a predetermined position. Excludes holder, watch.
NSN 6685-01-442-4034
NSN 5930-00-456-0889
NSN 6240-00-235-5159
NSN 5996-01-321-3092
NSN 5835-01-191-3405
NSN 2925-01-391-9247
NSN 5925-01-464-9067
NSN 6620-01-252-3567
NSN 6650-01-227-8761
NSN 6150-01-100-4337
NSN 5905-00-051-7065
NSN 6145-01-160-7658