In a civil surveying work it is indispensable. But sometimes we rush to meet geometric data of the work. One is wanting to know if the slope of our cuts and / or embankments correspond to the projected angle. The program allows to set and display the slope, sobrimpresionarle with the required angle (or measuring the actual angle) Adjust the horizontal line, the picture resolution and zoom. I say again: This is an approximate method. A phone is not a surveying device. It must be placed in profil