A device and a method for guiding an instrument, tool or implant with respect to a three-dimensional body. The device includes a rod shaped member with a central axis, a rear end, a front end and a length L2. A first targeting element is fixed to the rod shaped member coaxially to the central axis. The first targeting element has a first center, and is arranged on the rod shaped member with the first center at a distance A1>0 from the rear end. A second targeting element with a second center is fixed to the rod shaped member coaxially to the central axis with the second center at a distance A2
