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 5895-01-218-2763
NSN 6105-01-182-4656
NSN 5910-00-152-8996
NSN 5910-01-440-5746
NSN 4140-00-170-1567
NSN 5915-00-445-3287
NSN 5990-01-018-3953
NSN 6150-00-446-3317
NSN 6135-00-299-6918
NSN 6145-01-286-9847
NSN 5895-00-558-5859
NSN 4140-01-129-8885