A cylindrical item usually having a flanged aperture designed to hold and mount an instrument in a predetermined position. Excludes holder, watch.
NSN 6610-00-225-9886
NSN 5990-01-463-2279
NSN 6135-01-210-8715
NSN 5975-00-566-4232
NSN 5960-01-206-7763
NSN 5985-01-525-2107
NSN 6220-00-455-0221
NSN 5895-01-473-2729
NSN 6105-01-423-9451
NSN 6610-00-820-0903
NSN 6145-01-541-4302
NSN 6150-01-106-3646