An interface node for enabling a robotic arm to be used as a reconfigurable fixture for vehicle manufacture is described. The interface node comprises an attachment element for attaching the interface node to the robotic arm. The interface node also comprises a first locating element, the first locating element comprising a flat surface wherein the flat surface is suitable for locating a first feature of a first component wherein the first feature comprises a face of the first component. The interface node further comprises a wall extending from and substantially around the flat surface, the wall connecting the flat surface to the attachment element wherein the wall defines a second locating element, the second locating element suitable for locating a second feature of a second component, which may or may not be the same.