magnetometer
noun
- measuring instrument for magnetism
Wiktionary
Pronunciation: /ˌmæɡnɪˈtɒmɪtə/ / /ˌmæɡnɪˈtɑmɪtɚ/
noun
Etymology: From magneto- + -meter.
- An instrument used to measure the intensity and direction of a magnetic field, especially at points on the Earth's surface; sometimes used as metal detector.