The vertical representation is produced in two ways: - classically, by extracting isohypses on the instrument, and - software based on processing the read heights of the grid points (automatic positioning of the mark in the model) and using the TERAMODELER software tool for interpolation for isohypses. In the flat part of the hilly-mountainous terrain with a slope of up to 6%, the mapping of the vertical representation is performed by picking and reading the terrain elevations with the stereo instrument. The density of the marked points will be a maximum of 40 mm of the original for all scales of the recording. Depending on the configuration of the terrain, the restitution of the height representation is performed only in one direction, continuously with solid lines. The accuracy of the restitution of the vertical representation is up to 1/4 of the equidistance of the isohypses from the original, i.e. of the neighboring stereo pairs up to 1/3 of their equidistance.