Abstract: An angle square adapter including: a base, where base is attachable to a straight ruler; a series of holes over a top surface of the base; an alignment line between the holes; a laser assembly mountable on the base, where the laser assembly includes a circular measurement portion, a nose portion and a laser mounted on the nose portion; and a measurement scale along one edge of the base, where measurement scale assists in angle alignment. The series of holes preferably includes three holes aligned in a straight line. An angle scale is provided on the perimeter of the circular measurement portion. The angle square adapter may also include a plurality of magnets along one side of the base and a lanyard attached to the base.

Abstract: An angle square adapter including: a base, where base is attachable to a straight ruler; a series of holes over a top surface of the base; an alignment line between the holes; a laser assembly mountable on the base, where the laser assembly includes a circular measurement portion, a nose portion and a laser mounted on the nose portion; and a measurement scale along one edge of the base, where measurement scale assists in angle alignment. The series of holes preferably includes three holes aligned in a straight line. An angle scale is provided on the perimeter of the circular measurement portion. The angle square adapter may also include a plurality of magnets along one side of the base and a lanyard attached to the base.