Handy Surveying (free)

This app has been developed in consultation with experienced surveyors and includes many of the common Coordinate Geometry (COGO) calculations needed for field work.

Formulas supported include:

* Traverse / Radiation (2D and 3D)

* Inverse / Join (2D and 3D)

* Intersection by bearings

* Intersection by distances

* Intersection by bearing and distance

* Intersection of two lines

* Intersection of perpendicular lines

* Point Scale Factor

* Grid Convergence

In addition, the app also includes a bearing calculator and a general purpose calculator tool which includes the basic trig functions and a decimal degree to Deg/Min/Sec converter.