Stanley, Fatmax Cross Line Self Leveling Laser, Magnetically Dampened Mini Cross Level Projects Bright Level & Or Plumb Lines For Instant Reference Marks At The Press Of A Button, Out Of Level Range Sensor, For Interior Use With A Working Range Of 30', Accuracy 5/32", Can Be Used On A Tripod, Ideal For All Interior Construction, Remodeling & Decorating Uses, Has Many Interior Industrial Applications, Includes Carrying Case.