A laser mounting assembly for mounting a laser tool to a mounting surface such as a wall to adjacent to an end of a mounted first molding segment and orienting the laser tool to project a beam of light from a point aligned with a longitudinal edge of the first molding segment along the mounting surface...http://www.google.com.tw/patents/US8069578?utm_source=gb-gplus-share專利 US8069578 - Laser tool mounting assembly and method of use
