Patent ID: 7676939

Claim:
A cross laser device for installing plate- or board-shaped floor covering elements on a flat substrate, comprising: a housing including first and second front light exits, and including feet to be positioned on the substrate such that an underside of the housing is spaced apart from the substrate by the feet; and at least one first and one second laser disposed within the housing for generating first and second laser beams emitted through the first and second front light exits of the housing so as to form first and second marking lines on the substrate, respectively, the marking lines intersecting at right angles at an intersection point spaced apart from the light exits, wherein a first clearance zone beneath the housing extends from a first side edge of the housing at least to a first vertical plane in which the first laser beam is located, the first clearance zone extending continuously over the entire region between the first vertical plane and the first side edge, and wherein a second clearance zone beneath the housing extends from a second side edge of the housing at least up to a second vertical plane in which the second laser beam is located, the second clearance zone extending continuously over the entire region between the second vertical plane and the second side edge.