Abstract: The invention relates to a system of analysis by visual display of the vibratory movements of a rotary machine having at least one shaft supported by at least one bearing.This system comprises two first transducers transmitting electrical signals as a function of the relative displacements of the shaft with respect to the bearing, positioned in the bearing and forming between the two transducers an angle of 90.degree., two second transducers transmitting electrical signals as a function of the absolute displacements of the bearing and positioned level with the bearing forming between the two transducers an angle of 90.degree., control and detection means connected to the first and second transducers, means for combining the electrical signals from the detection means making it possible to determine the absolute movement of the shaft, display means for producing and positioning two groups of animated or moving circles so as to display the real image of the machine.