This module allows you to calculate the coefficient for the correction of the cartographic distortion according to the coordinates and height of the check point and for the correction due to the height above sea level.
If you enter the coordinates of the check point here, or if you drag them from the coordinate list and press the button (Calculation), the program calculates the scale coefficient for the correction of the cartographic distortion. If the point also has the coordinate Z, the coefficient for correction due to the height above sea level is also calculated.
Using the check boxes, select which corrections you want to perform and press the button (Set). The calculated scale coefficient will be stored in the GROMA program settings, and during the import of the measured data list all the imported lengths will be multiplied by this coefficient.