FORD 2002 Thunderbird v.2 - Manual (Page 18)

Trip odometer
Registers the kilometers (miles) of
individual journeys. To reset,
depress the control.
To switch the display from Trip A to the Trip B feature, depress the A/B
control.
Tachometer
Indicates the engine speed in
revolutions per minute.
Driving with your tachometer
pointer continuously at the top of
the scale may damage the engine.
Instrument Cluster
18