Patent References 3169320 Universal framing layout tool Tool guide Wall and rafter layout tool Layout square Patent #: 5140755 InventorApplicationNo. 243244 filed on 05/16/1994US Classes:33/429, Square and fixed straightedge33/474, Plural straightedges nonadjustably fixed at right angles (e.g., T-square, triangles, squares)33/481, Multiplane33/563, Single sheet type33/613CollocatingExaminersPrimary: Wirthlin, AlvinAttorney, Agent or FirmInternational ClassB43L 007/027AbstractA generally U-shaped carpentry building tool is provided, which includes a reference plate member for placement on one or more building members and having an inner edge and outer marking edge; a first marking guide arm connected at 90° to one end of the reference plate member; a second marking guide arm connected at 90° to the other end of the reference plate member to form a generally U-shaped tool; a first lip member connected to one edge of the reference plate member to form a first right angle, corner-engaging member for engaging the corner of the one or more building members to properly position the reference plate member relative to the one or more building members; and a second lip member connected at 90° to the center of the second marking guide arm to form a second right angle, corner-engaging member transverse to the first corner-engaging member for marking off a predetermined position to provide the proper centerline alignment of a second building member relative to the one or more building members. | |