Patent ID: 8209874

Claim:
A laser construction tool system comprising: a laser unit comprising a mount for connecting the laser unit to a first frame construction member, the laser unit further comprising a laser source and multiple rotary joints and multiple linear joints for adjustment of the location of the laser source relative to said first frame construction member and for adjustment of direction of a laser beam emitted from the laser source; a target separate from the laser unit having a target portion and an attachment portion, wherein the attachment portion is adapted for attachment to a second frame construction member, and wherein the target portion, has a portion that is light-reflective to reflect at least a portion of said laser beam; and a cutting guide for cutting roof rafter tails of roofs of various pitches, the cutting guide being separate from the laser unit and separate from said target, and said cutting guide comprising a U-shaped bracket and a U-shaped guide plate, wherein the U-shaped bracket has a bracket length and is received on a roof rafter having a rafter length so that the bracket length is parallel to the rafter length, and wherein the U-shaped plate is pivotal and lockable relative to the bracket to be vertical for any roof rafter pitch.