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 6135-01-286-9563
NSN 5895-01-218-5566
NSN 6610-01-442-3509
NSN 5945-01-535-0951
NSN 6610-01-387-7517
NSN 5950-01-094-9269
NSN 5915-00-230-8803
NSN 5975-00-941-6091
NSN 6145-00-701-2987
NSN 6610-00-722-2795
NSN 5905-01-220-5643
NSN 5975-01-450-3986