Instrument de ligne laser à angle droitDoing a project without a laser is like going a day without coffee. Sure, you can get by, but it just isn't easy. If you've never used a laser before, it's time to level up. Main Features [Simple Right Angle Alignment] Handy and compact laser level tool that can generate two lines on the floor, wall, or other surfaces at 90 degree angles to help you square, align and angle at 90 degrees for surface layout including tile, picture, stone, brick, carpet,