Grayhill now offers the following high-resolution products. The 63A is a 256 CPR absolute encoder. Because this absolute encoder outputs 256 unique codes per each 360 degree rotation, it is suitable for applications where the absolute position of the encoder must be known when the device is powered-up. The 63Q is a 1024 CPR incremental encoder. The 63T is a hollow shaft version of the 63Q suitable for mounting on a motor or other shafts in a motion control system.