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Hand Bearing Compass

Use your iPhone/iPod/iPad on its edge, as a Hand Bearing Compass. Press the screen to take a sight. After 3 si...

Expired  $ 9.99 $ 2.99

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Use your iPhone/iPod/iPad on its edge, as a Hand Bearing Compass.
Press the screen to take a sight.
After 3 sights, go to the chart table !

The Magnetic variation is calculated, depending of your position, using the WMM algorithm and data.

Notes :
To save battery life, position is refreshed with an accuracy of 1NM.
Bearings are displayed in Magnetic (M). You have to apply Magnetic
Variation to determine the True North (T).

References :
- WORLD MAGNETIC MODEL : http://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml

- Moon Calculations : ELP2000 theory

- Jean Meeus. Astronomical Algorithms

Size

3.1 MB

Last update

Nov. 26, 2019

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