A device comprising: a base assembly configured to define a lower axis of rotation (120), a display assembly including a display configured to rotate around an upper axis of rotation (120), and an arm assembly extending from the base assembly at the lower axis of rotation (120) to the display assembly at the upper axis of rotation (120) and rotatably coupling the display assembly to the base assembly relative to the upper and lower axes of rotation (120) and 120), wherein the arm assembly comprises a hollow arm (118) and a four bar linkage contained within the hollow arm (118), the four bar linkage comprising a pair of redundant elongated links (1606, 1068) that extend between the lower axis of rotation (120) and the upper axis of rotation (120) and that function as one link of the four bar linkage, the hollow arm (118) functioning as another link of the four bar linkage and a lower link and an upper link functioning as the remaining links of the four bar linkage, the outer link and the inner link including lower ends (1612, 1612), and upper ends (1616, 1616), wherein the lower ends (1612, 1612) are rotatably secured to the lower link on opposing sides of the lower axis of rotation (120), and the upper ends (1616, 1616) are rotatably secured to the upper link on opposing sides of the upper axis of rotation (120), said lower link is secured with respect to the base assembly; said upper link is secured to a display mount that is configured for supporting said display, such that the display rotates around the upper axis of rotation in correspondence with a rotation of the upper link around said upper axis of rotation; characterized by: the base assembly including a base frame, a crank shaft that defines the lower axis of rotation (120) and is rotatably secured to the base frame, a crank, a first crankpin (506) employed in the crank, a connection rod coupled to the first crank pin (506) and a first spring (510), said first crankpin (506) configured for operating on the first spring (510) to counter-balance the display, wherein said hollow arm (118) is secured to said crank shaft and forming an angle α with said base assembly, such that when the hollow arm rotates around the lower axis of rotation to adjust said angle α, the crank shaft rotates correspondingly. a base assembly configured to define a lower axis of rotation (120), a display assembly including a display configured to rotate around an upper axis of rotation (120), and an arm assembly extending from the base assembly at the lower axis of rotation (120) to the display assembly at the upper axis of rotation (120) and rotatably coupling the display assembly to the base assembly relative to the upper and lower axes of rotation (120) and 120), wherein the arm assembly comprises a hollow arm (118) and a four bar linkage contained within the hollow arm (118), the four bar linkage comprising a pair of redundant elongated links (1606, 1068) that extend between the lower axis of rotation (120) and the upper axis of rotation (120) and that function as one link of the four bar linkage, the hollow arm (118) functioning as another link of the four bar linkage and a lower link and an upper link functioning as the remaining links of the four bar linkage, the outer link and the inner link including lower ends (1612, 1612), and upper ends (1616, 1616), wherein the lower ends (1612, 1612) are rotatably secured to the lower link on opposing sides of the lower axis of rotation (120), and the upper ends (1616, 1616) are rotatably secured to the upper link on opposing sides of the upper axis of rotation (120), said lower link is secured with respect to the base assembly; said upper link is secured to a display mount that is configured for supporting said display, such that the display rotates around the upper axis of rotation in correspondence with a rotation of the upper link around said upper axis of rotation; the base assembly including a base frame, a crank shaft that defines the lower axis of rotation (120) and is rotatably secured to the base frame, a crank, a first crankpin (506) employed in the crank, a connection rod coupled to the first crank pin (506) and a first spring (510), said first crankpin (506) configured for operating on the first spring (510) to counter-balance the display, wherein said hollow arm (118) is secured to said crank shaft and forming an angle α with said base assembly, such that when the hollow arm rotates around the lower axis of rotation to adjust said angle α, the crank shaft rotates correspondingly.