Surface Grinding Wheel corrector usage

Is generally mounted on a base, dressing grinding wheel, the grinding wheel correction in the electric suction disk, the corrector diamond pen stops just below the wheel, the wheel moves back and forth, slowly feed, the correction the diamond pen touch wheel, wheel abrasive wheels  and forth, so that the entire circumference of the wheel can be trimmed to trim to finish. Cylindrical grinder wheel corrector then use the screws in the bed surface grinder, also make corrector pen to do the diamond center of the wheel, making the bed and move around grinding,  abrasive grinding  grinding wheel peripheral surface, so that the whole wheel circumferential surface can be trimmed to the can.