The Cambridge roller used for flattening land or breaking up large clumps of soil, especially after ploughing The surface of rollers is textured to help break up soil or to groove the final surface to reduce scouring from rain. Each segment of a Cambridge roller has a rib around its edge for this purpose.
Uploaded to Geograph by David Anstiss on 21 March 2010
Photo © David Anstiss, 21 March 2010. Licensed for reuse under this Creative Commons licence