The hexaxial reference system consists of six bisecting lines, each representing one of the six limb leads, and a circle, representing the heart. The intersection of all lines divides the circle into equal, 30-degree segments. Shifting degrees Note that +0 degree appears at the 3 o’clock position (positive pole lead I). Moving counterclockwise, the degrees become increasingly negative, until reaching ±180 degrees, at the 9 o’clock position (negative pole lead I). The bottom half of the circle contains the corresponding positive degrees. However, a positive-degree designation does not necessarily mean that the pole is positive. 
|