Patent ID: 7409312

Claim:
A laser light receiver, comprising: a housing; a first laser light photosensor, which generates a first signal if receiving a beam of laser light energy from an external laser light source; a visible readout to indicate if said laser light receiver is substantially on-grade with respect to said beam of laser light energy; a visible light marker; a distance measuring device that uses a second laser light source and a second laser light photosensor, said distance measuring device being used to substantially determine a first distance between said second laser light photosensor and a predetermined external position, as selected by a user of said laser light receiver apparatus while aiming said visible light marker, said second laser light photosensor generating a second signal if receiving reflected laser light energy from said second laser light source; a level vial; and a processing circuit that receives said first signal and said second signal; wherein said housing, said first laser light photosensor, said distance measuring device, said level vial, said visible readout, and said processing circuit are assembled as a unitary hand-held apparatus.