Stanley STHT77502-1 Cross90 Red Beam Multi Cross Line Laser LevelThe Stanley STHT77502 1, known as the Cross90? Red Beam Multi Cross Line Laser Level, is a portable, self leveling tool designed for precise interior layout work. It projects a horizontal and vertical cross line, plus an extra 90 vertical line? making it ideal for tile, flooring, partition layout, and drywall tasks. With a red laser visible up to 12 meters and 5 mm accuracy at 10 m.