Patent ID: 7675612

Claim:
A laser measuring device ( 10 , 50 ) comprising a housing ( 12 , 56 ) having a base surface ( 20 , 34 ), a laser transmitter mounted within said housing for generating and projecting at least one laser beam ( 13 , 15 , 52 , 54 ) perpendicular to said base surface or a mount ( 14 ) connected to the housing, and wherein, at least three adjustable positioning elements ( 28 , 30 , 32 ) are mounted on said base surface, said positioning elements being movable or pivotable in respect to said base surface, each positioning element ( 28 , 30 , 32 ) comprises an arm ( 36 , 38 , 40 ) having a supporting surface which can be pivoted about an axis ( 27 , 29 , 31 ) that extends perpendicular to the base surface ( 20 , 24 ) or to a plan that is spanned by supporting surfaces for the arms, and which has adjacent its free end area, a projection ( 42 , 44 , 46 ) that points away from the base surface, said projections lying on a common circle, the distance between said positioning elements being movable or pivotable synchronously, the positioning elements when moving or pivoting having their projections lying on common circles with different diameters, the at least one laser beam extending perpendicular to said base surface and passing through the center of said circles.