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 5965-01-053-7168
NSN 6145-00-466-4068
NSN 5935-01-052-0054
NSN 5895-00-247-7394
NSN 6685-01-154-8810
NSN 5945-01-134-5312
NSN 5985-00-225-9993
NSN 5950-01-309-9802
NSN 6105-00-909-0215
NSN 6220-00-111-3604
NSN 6105-00-664-1292
NSN 6645-01-435-8356