Two or more different items having a common mounting or mounted on each other which together form a portion of a tachometer (as modified), but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
NSN 5975-01-330-8260
NSN 6110-00-934-7943
NSN 6105-00-248-5772
NSN 2925-00-596-9775
NSN 6110-01-329-8749
NSN 5960-00-392-2945
NSN 5998-00-107-8278
NSN 5985-01-610-0882
NSN 2925-01-564-3900
NSN 6610-01-095-1459
NSN 7035-01-462-2953
NSN 6105-00-450-2167