Super High Visibility Beams 140° Fan Angle: 140° vertical and 120° horizontal fan angles gives you amazing line lengths for limitless layout versatility. Variable Beam Options: Precision, vertical and horizontal lines operate simultaneously or independent of each other for countless level and plumb applications. Locked Line Angle: Take unit out of self-leveling mode and lock line in place allowing you to set unit at any angle. Automatic Leveling: The gravity leveled pendulum self leveling mechanism eliminates set up time and guarantees accuracy. Automatic Out of Level Sensing: The visual (blinking laser beam) out of level indication signals if the unit is out of level after initial set up. This eliminates tool status checks and costly errors, saving time and money. Multipurpose Attachment Accessory: Set up 45° angles on all lines and rotate 360°. Strong magnets, tripod mount and straps allow for attachment of the tool to a variety of different surfaces including metal studs, wooden beams and tripods.