In Pictures: Top 15 augmented reality apps for iPh...
Theodolite is an electronic viewfinder for hikers and other active sportspeople. It serves as a compass, GPS tool, zoom camera, rangefinder, and two-axis inclinometer. For advanced users, the app also has an A-B calculator for height, distance, heading position, triangulation, and relative angles.
In Pictures: Top 15 augmented reality apps for iPhone and iPad