The PH20 5-axis system allows measurement points to be taken by moving only the head, rather than the CMM structure. With 5-axis motion, the touch trigger probes use the rapid rotary motion of the head to take the points fast, with better repeatability and accuracy. With the PH20 5-axis touch-trigger system, the time formerly spent indexing the head is eliminated. 5-axis motion typically results in a 3-fold improvement over conventional, non-touch trigger systems. In fact, the PH20 guarantees successful access with its limitless positioning. Plus, the 5-axis motion minimizes stylus changes. With the 5-axis system, the 5-axis motion allows measurement of larger parts through simultaneous motion. The space required for head rotation is minimized. The PH20 avoids stylus collisions through automatic alignment with the part coordinate system.