The Suncompass company
After using the Shadow Stick Method for some years I experienced two big problems with the method :-
Additionally, we built in a primitive GPS functionality which provides a daily latitude and longitude anywhere the Sun shines!
The African SunCompass has no moving parts and is powered exclusively by the Sun, so you can never run out of power or have someone turn off your satellite coverage!
The African SunCompass & GPS always shows you True North using direct sunlight - so no more magnetic declination calculations, making your map work easy!
The African SunCompass & GPS readings are never affected by Magnets, Electronics or Minerals beneath the ground!
The African SunCompass & GPS can give you a daily GPS fix (Latitude & Longitude), accurate to within 50km anywhere on the Earth! The record is currently 2.2km
Using direct sunlight, the African SunCompass & GPS can easily triangulate your position on a topographical map to within 50 meters