A handling device for objects to be moved in space, comprising: a supporting base which can be connected to a reference point; an arm extending between its own first part and its own second part; said first part being movably connected to the supporting base in such a way that the second part is movable relative to the supporting base along a line of movement; a loading portion for the object to be moved, mechanically connected to the second part of the arm; a balancing actuator connected between the supporting base and the arm and designed to balance the weight at least of the loading portion along the line of movement in such a way as to keep the loading portion suspended in space; said loading portion comprising a holding unit which can be grasped by an operator for shifting the loading portion in space; said balancing actuator also being designed to move the second part of the arm along the line of movement as a result of the application of a basic force applied by an operator on the loading portion in such a way as to move the loading portion; characterised in that it comprises movement aid means, separate from the balancing actuator, acting on the mechanical arm and designed to move the mechanical arm relative to the base along the line of movement in such a way as to apply an additional force, relative to the basic force, on the loading portion designed to oppose the initial inertia of the loading portion; said handling device comprising a control unit which can be operated by the operator and is operatively connected to the movement aid means for operating said movement aid means on command; said control unit comprising a handle movable along a line of shifting corresponding to the line along which the loading portion is to be shifted; said handle being designed to operate the movement aid means along the line of movement corresponding to the line of shifting of the handle; said handle being movable along the line of shifting between a first operating position, a home position, and a second operating position; the control unit being designed to activate the movement aid means in a first direction of the line of movement when the handle is brought from the home position to the first operating position and to activate the movement aid means in a second direction, opposite to the first, of the line of movement when the handle is brought from the home position to the second operating position; the control unit comprising a part fixed to the loading portion and said handle which is slidable relative to the fixed part; the fixed part comprises a bar and the handle comprises a hollow annular body slidably movable on the outside of the bar. a supporting base which can be connected to a reference point; an arm extending between its own first part and its own second part; said first part being movably connected to the supporting base in such a way that the second part is movable relative to the supporting base along a line of movement; a loading portion for the object to be moved, mechanically connected to the second part of the arm; a balancing actuator connected between the supporting base and the arm and designed to balance the weight at least of the loading portion along the line of movement in such a way as to keep the loading portion suspended in space; said loading portion comprising a holding unit which can be grasped by an operator for shifting the loading portion in space; said balancing actuator also being designed to move the second part of the arm along the line of movement as a result of the application of a basic force applied by an operator on the loading portion in such a way as to move the loading portion; characterised in that it comprises movement aid means, separate from the balancing actuator, acting on the mechanical arm and designed to move the mechanical arm relative to the base along the line of movement in such a way as to apply an additional force, relative to the basic force, on the loading portion designed to oppose the initial inertia of the loading portion; said handling device comprising a control unit which can be operated by the operator and is operatively connected to the movement aid means for operating said movement aid means on command; said control unit comprising a handle movable along a line of shifting corresponding to the line along which the loading portion is to be shifted; said handle being designed to operate the movement aid means along the line of movement corresponding to the line of shifting of the handle; said handle being movable along the line of shifting between a first operating position, a home position, and a second operating position; the control unit being designed to activate the movement aid means in a first direction of the line of movement when the handle is brought from the home position to the first operating position and to activate the movement aid means in a second direction, opposite to the first, of the line of movement when the handle is brought from the home position to the second operating position; the control unit comprising a part fixed to the loading portion and said handle which is slidable relative to the fixed part; the fixed part comprises a bar and the handle comprises a hollow annular body slidably movable on the outside of the bar.