"Height Estimator" offers different methods to determine approximately the height of buildings, pylons, rooms, statues, monuments, trees...

* Using the difference of atmospheric pressure between two levels.
* Using the length of the sun's shadow.
* Aiming the base and the top of the object.
* Positions and distances can be determined by different ways, including GPS and triangulation.
* ...

Results can be saved and shared.

See http://www.paludour.net/HeightEstimatorHelp.html