An agricultural device including a first frame portion rotatably carrying a second frame portion for carrying at least one agricultural module, the second frame portion being rotatable relative to the first frame portion between a first position generally perpendicular to a direction of travel of the device and a second position generally parallel to the direction of travel of the device, the first frame portion having a pair of rolling elements for supporting the first frame along a support surface. The pair of rolling elements is laterally movable relative to the first frame portion in a direction perpendicular to the direction of travel of the device. The pair of rolling elements continuously laterally surrounds the second frame when viewed from behind a forward direction of travel of the device.
