Auscultator bimodal contactless and catenary.

Auscultator bimodal catenary without contact, comprising: - motion system and horizontal extent, with horizontal motion subsystem linear displacer (7) perpendicular to the track width; horizontal distance measurement subsystem; detection subsystem the inner face of each rail; and control subsystem for system integration, application deployment and communication with the operator. - vertical measurement system. - system installation aid for projecting laser reference lines and the installer to correctly position the catenary respect to the track center. - And control system for systems integration, application deployment and communication with the operator.