A high spot material gauging device applies high spot detection material in multiple depths to provide a basis for correctly determining a depth of material to be removed to produce a planar surface. The device includes a block having a planar first face. Each of a plurality of channels extends into the first face of the block. Each channel has a planar bottom surface parallel to the face of the block. The bottom surface of each channel is a unique respective depth measured transversely from the face of the block such that each channel is configured for applying a unique thickness of high spot material onto a planar control surface.