This invention is related to a support device (1 ) that comprises a carrier (3) onto which the arm (A) of the operator is seated, a movement mechanism (4) that provides the movement of the carrier (3), a main body (2) on which the movement mechanism (4) is mounted.La présente invention concerne un dispositif de support (1) comprenant un support (3) sur lequel vient reposer le bras (A) de lopérateur, un mécanisme de déplacement (4) qui assure le déplacement du support (3) et un corps principal (2) sur lequel est monté le mécanisme de déplacement (4).