Abstract: A wall edge marking device for resilient floor coverings for aiding in cutting the floor covering to size. The marking device has a relatively smooth base surface capable of sliding along the surface of a resilient floor covering which is laid out on a floor area and extends beyond the area to be covered and up a wall surface. An upright surface extends in a plane substantially normal to that of the base surface. The upright surface is biased back on each side to form a pair of angular faces. The apex of the angular faces contacts the wall and slides along the surface of the floor covering overlapping the wall. The intersection of the base and upright surfaces is rounded and has an adjustable marker protruding therefrom. The device slides along the floor, against the wall, where it will trace a mark on the floor covering. This mark can be used as a cutting line for cutting the flooring for an accurate fit. The mark is adjustable in the vertical plane, to compensate for various thicknesses of flooring.