Abstract: The invention relates to a human-machine interface (1), including a first body (10), a second body (11) and a controller (12), the first and second bodies (10), (11) being axially linked and rotatably movable, the first body (10) supporting a platform (100), the second body (11) supporting a feeler (110) in contact with the helical platform (100), and the controller (12) including a sensor (120) outputting a signal depending on the position of the feeler (110) on the platform (100). According to the invention, the human-machine interface includes: urging means (13) for applying a resilient bearing force in order to urge the feeler (110) and the platform (100); the first and second bodies (10), (11) not being axially translatable; and one of the elements consisting of the feeler (110) and the platform (100) being mounted so as to be axially slidable relative to the first and second bodies (10), (11).