direction finder
Noun
Meaning
radio; determines the direction of incoming radio waves
Source: WordNetSynonyms
quadrant
autopilot
global positioning system
finder
compass
potentiometer
GPS
micrometer
sextant
galvanometer
calorimeter
photometer
sniffer
aneroid
pyrometer
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In practical terms the South Pointing Chariot was a simple direction finder. It could have been made to point in any direction - north, south, east or west.