Abstract: A hand held device comprising a handle, said handle comprising a grip portion and a connection portion, said connection portion rotating with respect to said grip portion about a rotational axis, said connection portion forming a docking portion suitable for receiving an optional head unit, said docking portion being positioned opposite distally away from said grip portion, wherein rotation of the connection portion relative to the grip portion generates a specific amount of dynamic torsional resistance. The handle has a set amount of stiffness and damping and/or stiffness and momentum of inertia such that the device provides a controlled return during rotation about the rotational axis so the device can contour about the surface in a desirable manner.