Magnetometry at home: Measuring the Inclination and Declination of the Earth's magnetic field with a smartphone
![Figure F1. Angular conventions and tool orientation determination. A. In the geographic frame the geomagnetic field vector is described in terms of intensity (G), magnetic declination (Dec = angle formed between true Figure F1. Angular conventions and tool orientation determination. A. In the geographic frame the geomagnetic field vector is described in terms of intensity (G), magnetic declination (Dec = angle formed between true](http://www-odp.tamu.edu/publications/197_SR/005/images/05_f01.gif)
Figure F1. Angular conventions and tool orientation determination. A. In the geographic frame the geomagnetic field vector is described in terms of intensity (G), magnetic declination (Dec = angle formed between true
![a) Azimuth and inclination when drilling a directional well; (b) The... | Download Scientific Diagram a) Azimuth and inclination when drilling a directional well; (b) The... | Download Scientific Diagram](https://www.researchgate.net/publication/320511730/figure/fig2/AS:614305993093206@1523473370904/a-Azimuth-and-inclination-when-drilling-a-directional-well-b-The-azimuth-of-a.png)