What is the accuracy of the Bulls Eye Laser Levels?

The BDL100S BullsEye Laser Level and Stud Finder is accurate to +/- 1/8" at 14 feet . The BDL200S Bullet Laser Level is accurate to +/- 1/8" at 10 feet. The BDL250S and BDL260S Stick Laser Levels are accurate to +/- 1/4" at 50 feet and can shoot up to 100 feet. The BDL300S 360° Auto Laser Level is accurate to +/- 1/4" at 20 feet, can shoot up to 30 foot radius. The BDL400S CROSSHAIR 90° Auto Leveling Laser is accurate to +/- 1/8" at 10 feet.