The present invention is directed to novel polypeptides and to nucleic acid molecules encoding those polypeptides. The angular velocities of the steering shaft at the respective detection positions are calculated based on the rotational angles. In addition, the user may define a data transmission network via which location data are primarily communicated to the tracker’s device. This one-piece design can facilitate easier assembly and maintenance of the valve. The wafer includes a scribe grid having a scribe grid pad, and an interconnect electrically connecting the scribe grid pad to the die circuitry.