Measurement device for a vehicle seat having a lower part and an upper part which is movable relative to the lower. A scissor-action frame comprising at least one first scissor part and at least one second scissor part is arranged between the upper vehicle seat part and the lower vehicle seat part. The first scissor part and the second scissor part are interconnected by means of a rotary axis and a first end region of the first scissor part is fixed to the lower vehicle seat part by a pivot axis. At least one angle sensor unit is fixed to the first scissor part and the angle sensor unit is movably connected to the lower vehicle seat part by means of a movable lever apparatus, wherein the angle sensor unit can be actuated by the lever apparatus when the height of the upper vehicle seat part is adjusted.