radar
radar
Radar
transponder/radar
radar
The palindrome for an instrument used to determine speed is radar. It reads the same forwards and backwards.
gag
RADAR is the device most commonly used to locate airplanes in flight. In the event of a crash, the aircraft is equipped with an ELT (emergency location transmitter) which broadcasts a radio signal to aid in the search for the aircraft. Emergency search teams can then use specialized radio receivers to locate the ELT, and thus the crash site.
A radar.
Racecar
radar
Compass is a scientific instrument used to locate directions,specifically north.