A control device which allows an operator/user to follow the user's anatomical movement by following natural hand rotation, includes two independent detection sensors or sensor portions embedded in two different parts of the device, one in a fixed part and one in a mobile or rotative part, with resistance to mutual disturbance between the two. The device includes a knob portion rotatable about an axis of rotation, at least one sensor configured to sense a rotational position of the knob in relation to the axis of rotation, circuitry adapted to at least provide electrical power to the rotative knob portion, circuitry adapted to transmit the sensed rotational position of the knob, and a base portion rotatably coupled to the knob portion.