The CST/Berger 58-LM2 is a LaserMark LM2 Laser Level and Square–Pro. This projects line on floor and wall. One click of a button gives a perfect 90° horizontal and vertical laser “chalk lines” on the floor-lines that also extend to create plumb references on nearby walls. It is ideal for floor and wall tiling, paneling, wall fixtures, wallpapering, stenciling, wainscoting, finish carpentry, outlet switches, lighting fixtures, wall studs, partitions and much more.