Abstract: A side-shifting measurement device and method is provided for a grinding machine to measure the diameter of a roll being ground. The device includes a main frame located adjacent the grinding wheel and a side-shifting assembly mounted on the frame. A measuring device is mounted on the side-shifting assembly. The method includes mounting the side-shifting assembly adjacent to the grinding wheel, attaching a measuring device to the side-shifting assembly and contacting the measuring device with the roll such that the measuring device is located on a first side of the grinding wheel with respect to a grinding direction of the invention. When the grinding direction is reversed, the measuring device is laterally shifted from the first side of the grinding wheel to the second side of the grinding wheel.