Answer | Crossword Clue |
---|---|
GPS | Navigation device, briefly |
GYROCOMPASS | Navigation device |
SONAR | Navigation device. |
LORAN | Navigation device. |
RADAR | Navigation device. |
LORAN | Navigation device |
SONAR | Navigation device |
LORAN | Device used in navigation. |
RADAR | Navigation device used since the 1930's. |
DIRECTIONFINDER | Device useful in navigation, or in discovering the hidden theme in the answers to starred clues |