Magnetometers are scientific instruments that measure
the strength of magnetic fields.
GNS Science Photograph by Tony Hurst
Permission of GNS Science must be obtained before any use of this image.
Changing position of the magnetic south pole
Magnetic declination in New Zealand
Tony Hurst, 'Magnetic field - The magnetic field and its direction', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/photograph/9216/a-magnetometer (accessed 20 January 2020)
Story by Tony Hurst, published 12 Jun 2006