Bosch 5PT Self Alignment Laser

5 Point, Self Leveling Alignment Laser, Points Up/Down, Front & Sides For Plumb, Level, Align & 90 Degree Square, Accuracy Is Plus/Minus 1/4" At 100' Eliminates The Need For 3-4-5 " Measurements In Laying Out 90 Degree Angle, Smart Pendulum System Self Levels, Indicates Out Of Level Condition & Locks When Switched Off, Compact Design Allows The Unit To Go Anywhere & Can Be Used In Almost Any Interior Application, Multi-Purpose Attachment Positions The Mount With Magnets, Strap Or Threaded Mounts 5/8 " To 11, 1/4" To 20, Includes: Multi-Purpose Attachment, 3 "AA" Batteries & Hard Carry Case.