A reversible mouldboard plough (1), wherein each a plough beam (12) is provided with a pair of plough bodies (11), a skimmer arrangement (14) being connected to the plough beam (12) providing a first skimmer (141) and a second skimmer (141a) proximate and in front of the respective plough bodies (11), wherein each skimmer (141, 141a) is attached to a skimmer shank (142) which is arranged displaceable in a longitudinal direction of the skimmer shank (142), and wherein the first skimmer (141) and the second skimmer (141a) are interconnected with a synchronization mechanism (144) arranged to provide equal displacement of the skimmers (141, 141a) relative to the respective plough bodies (11), wherein the first skimmer (141) and the second skimmer (141a) are further interconnected with a linear actuator (15) arranged for displacing the skimmers (141, 141a) in the longitudinal direction of the skimmer shanks (142). A method of setting the working depth of skimmers (141, 141a) of a reversible multi-furrow mouldboard plough (1) is also disclosed