The shaping of the functional properties of the surface of an object in a technological process plays a key role in
the later operation of this object. The paper presents the results of the tests performed on the surface topography of
objects made of a selected hard-to-machine material, i.e., titanium alloy. Two measuring devices were used in the
research, an interference microscope, and a scanning electron microscope, which enabled the comprehensive (nonparametric
and parametric) description of surface topography obtained for three different finishing parameters. It
was noted that, in addition to material properties, in the evaluation of the functional properties of a surface, it is
important to carry out not only the qualitative, but also quantitative analysis of the machined surface topography.