The GT-9AC is designed to grind medical guidewires with multiple tapers, paddles, and even parabolic shapes, all at the fast speeds of a conventional centerless grinder. Using the latest in high speed imaging technology and a 1 micron encoder the whole length of the feeder, the machine is able to update the position of the wire every 0.00025" (0.006 mm) at typical grinding speeds. Faster position updates result in better length accuracy and repeatability, allowing the GT-9AC to easily hold the tighter tolerances required by today's guidewires.