Related Clues:
- Speed verifier
- Britney single off "Blackout"
- Speeder's trapper
- Name by which Walter O’Reilly is known in M*A*S*H
- Officer's tool to catch speeders
- Tool for catching speeders
- Missile guidance device
- Velocity tracker
- Detection system
- Airplane-tracking device
- Speed-checking beam
- Highway patrol device
- It's used to spy planes going up and down
- Nautical ancestor of GPS
- Actors relieved initially, finding system