A windscreen wiper with a link arm arrangement (4) including a first pair of arms (5) and a second pair of arms (6) to which the first pair of arms (5) is connected in such a way that they can pivot, the first pair of arms (5) being attached to a chassis in such a way that they can pivot and the second pair of arms (6) being attached to a windscreen wiper blade (7) in such way that they can pivot. The windscreen wiper further including an adjustment mechanism (8) for controlling the size of an angle between the first pair of arms (5) and the second pair of arms (6) in synchrony with the pivoting of the first pair of arms (5).