Abstract: Described herein is a multipurpose tool used for marking a substrate. The tool includes at least first and second generally planar layers. The first layer includes first and second edges for guiding a marking device, and third and fourth edges for abutting a first surface of the substrate. The second layer may be formed on a major surface of the first layer, the second layer having fifth and sixth edges for abutting a second surface of the substrate. The first and second edges may extend beyond the fifth and sixth edges by a first predetermined lateral distance. In addition, the first and second edges may form a curved corner, while the fifth and sixth edges may form a corresponding curved corner.