Laser square

An integral square comprising:

• a lightweight, triangular frame having a triangular planform comprising:
• a smooth first triangular shaped face and a smooth second triangular shaped face opposite from each other a pre-determined distance, said faces and said pre-determined distance defining a first side and a second side;
• a first edge extending along said first side;
• a second edge extending along said second side and being perpendicular to said first edge;
• a third edge extending between distal ends of said first edge and said second edge;
• a T-bar attached to said first edge of said frame and extending the length of said first edge for supporting said square against a flat surface for drawing angles based upon said T-bar as a datum;
• a first groove formed in said T-bar and extending parallel to said first edge;
• a second groove formed in said second edge;
• a first laser device and a second laser device mounted in said first groove pointing along the length of said first groove in opposing directions to each other for generating laser beams for generating a straight line which terminates at surfaces upon which said laser beams terminate;
• a third laser device and a fourth laser device mounted in said second groove and pointing along the length of said second groove in opposing directions to each other for generating laser beams for generating a straight line which terminates at the surfaces upon which said laser beams terminate;
• level means mounted adjacent to said first laser device and said second laser device for indicating when said first edge of said square is level with the ground, and level means adjacent to said third laser device and said fourth laser device means for indicating when said second edge of said square is level with the ground;
• and
• mounting means for mounting said first laser device, said second laser device, and the level means adjacent to said first laser device and said second laser device in said first groove and for mounting said third laser device, said fourth laser device, and said level means adjacent to said third laser device and said fourth laser device in said second groove.