Spring balanced support device comprising at least one arm, connected to its surroundings via a movable pivot point and a second arm, the first and second arm forming an arm mechanism to which a mass may be coupled directly or indirectly at a mass coupling point, wherein an axis extends through the movable pivot point and extends substantially parallel to a direction of a force exerted on the spring balanced support device at the mass coupling point due to the force of gravity on the mass, characterised in that: - the second arm is connected to the first arm at an elbow pivot point, the second arm being coupled to the surroundings via a second movable pivot point, wherein the second movable pivot point is movable substantially parallel to said axis, or - the second arm is connected to the first arm via a pivot connection, the second arm having a fixed orientation with respect to the axis, wherein the pivot connection is slideable along the first or second arm, wherein the second arm is movable along a direction substantially parallel to said axis, wherein the arm mechanism is balanced by at least one spring, at one end directly or indirectly connected to the arm mechanism at a spring connection point, the other end directly or indirectly connected to the surroundings at a spring base point, wherein the spring base point is located substantially on said axis, or wherein the spring base point is located at a distance from said axis along a line which intersects the axis and which extends substantially parallel to a pivot point axis of the movable pivot point, wherein the movable pivot point is movable along the axis in order to adjust the spring balanced support device. the first and second arm forming an arm mechanism to which a mass may be coupled directly or indirectly at a mass coupling point, wherein an axis extends through the movable pivot point and extends substantially parallel to a direction of a force exerted on the spring balanced support device at the mass coupling point due to the force of gravity on the mass, characterised in that: - the second arm is connected to the first arm at an elbow pivot point, the second arm being coupled to the surroundings via a second movable pivot point, wherein the second movable pivot point is movable substantially parallel to said axis, or - the second arm is connected to the first arm via a pivot connection, the second arm having a fixed orientation with respect to the axis, wherein the pivot connection is slideable along the first or second arm, wherein the second arm is movable along a direction substantially parallel to said axis, wherein the arm mechanism is balanced by at least one spring, at one end directly or indirectly connected to the arm mechanism at a spring connection point, the other end directly or indirectly connected to the surroundings at a spring base point, - the second arm is connected to the first arm at an elbow pivot point, the second arm being coupled to the surroundings via a second movable pivot point, wherein the second movable pivot point is movable substantially parallel to said axis, or - the second arm is connected to the first arm via a pivot connection, the second arm having a fixed orientation with respect to the axis, wherein the pivot connection is slideable along the first or second arm, wherein the second arm is movable along a direction substantially parallel to said axis, wherein the spring base point is located substantially on said axis, or wherein the spring base point is located at a distance from said axis along a line which intersects the axis and which extends substantially parallel to a pivot point axis of the movable pivot point, wherein the movable pivot point is movable along the axis in order to adjust the spring balanced support device.