In a guiding device for a surgical machining tool, which, in particular, is securable to a bone to be worked on and comprises a guiding element which guides the machining tool and is mounted on the guiding device so as to be displaceable in one plane, in order to improve the visibility of the operating site, it is proposed that the guiding element be connected to a frame of the guiding device by at least one lever by means of a pivot whose axis of rotation extends perpendicularly to the guiding plane.