Origin of radio compass
Examples from the Web for radio compass
He adjusted the coil of a radio-compass here, another there and still another here.
Instantly his hands flew to the radio-compass as he muttered.
Automatically Curlie's fingers moved the radio-compass backward and forward while his37 mind gauged the distance.
Directions are difficult at best on Venus, and his radio-compass proved faulty.Shock Treatment|Stanley Mullen
The man, so the radio-compass had said, had taken the trail which led straight away toward the Arctic Ocean.