Rolling device intended to be fixed at the bottom of a panel to allow its movement over the ground, comprising: - a first element called the static element comprising means for fixing it on said panel, - a second element called the adjustable element having rolling means adapted to move in a XY horizontal plane, the adjustable element being adapted to shift along the static element along a vertical Z axis that is orthogonal to the XY plane, - adjustment means of the spacing along the vertical Z axis between the adjustable element and the static element, said adjustment means being adapted to constantly maintain the relative vertical position along the Z axis of the adjustable element and the static element in relation to each other when no torque is applied to said adjustment means and being adapted to modify this spacing under a torque effect being exerted on them along the said vertical Z axis, the device comprising a side, called the rear side, generally in line with a plane parallel to the XZ plane, the means for fixing the static element on the panel being configured to fix said static element on the panel in a position wherein said rear side is located vis-à-vis the panel, and said device comprising a component forming an angle transmission adapted to convert a torque being exerted on it along a said transmission axis T forming an angle between 10° and 90° with the said vertical Z axis, in a vertical Z axis torque exerted on said adjustment means, the transmission axis T and the vertical XZ plan forming an angle between 0° and 80°, characterised in that said component forming an angle transmission is geared, and comprises: - a first shaft extending along said transmission axis T, comprising a first pinion gear at a first longitudinal end, and having a screw head at an opposite second end, and/or at the said first end, - a second shaft extending along the vertical Z axis, having a second pinion gear at a first end, adapted to engage with said first pinion gear, and of which a second opposite end is adapted to transmit torque of the vertical Z axis to said adjustment means, said first end of the second shaft further comprising a screw head adapted to apply torques of the vertical Z axis directly on said second shaft. - a first element called the static element comprising means for fixing it on said panel, - a second element called the adjustable element having rolling means adapted to move in a XY horizontal plane, the adjustable element being adapted to shift along the static element along a vertical Z axis that is orthogonal to the XY plane, - adjustment means of the spacing along the vertical Z axis between the adjustable element and the static element, said adjustment means being adapted to constantly maintain the relative vertical position along the Z axis of the adjustable element and the static element in relation to each other when no torque is applied to said adjustment means and being adapted to modify this spacing under a torque effect being exerted on them along the said vertical Z axis, - a first shaft extending along said transmission axis T, comprising a first pinion gear at a first longitudinal end, and having a screw head at an opposite second end, and/or at the said first end, - a second shaft extending along the vertical Z axis, having a second pinion gear at a first end, adapted to engage with said first pinion gear, and of which a second opposite end is adapted to transmit torque of the vertical Z axis to said adjustment means, said first end of the second shaft further comprising a screw head adapted to apply torques of the vertical Z axis directly on said second shaft.