Related Clues:

• Measurer of a fastball's speed
• Device used to map the surface of other planets
• Device that displays blips
• Speeding detector
• Fastball-clocking device
• Altimetry aid
• It can locate things in the dark or fog, either way
• Vessel tracking device
• Weather-tracking tool
• Old ship-locating system
• Range-finding and detection system
• Aviation necessity
• Need for 7-Down
• Air defense system tool
• 'MASH' corporal