Bosch combines precision and accuracy with its Wall/Floor Covering Laser (GTL3).  The laser lines are positioned in front of the laser base for easy centering over point and precise adjustment.  Bright and highly visible, the laser lines raise from the surface to project over uneven surfaces, and are clear, sharp and precise.  Perfect for working with tile and wall/floor covering surfaces, it is waterproof and dustproof to ensure years of dependable performance.