Product Code:SAE J182 Title:Motor Vehicle Fiducial Marks and Three-Dimensional Reference System Issuing Committee:Human Accom And Design Devices Stds Comm Scope:This SAE Recommended Practice describes a procedure for locating the three-dimensional reference system on a motor vehicle as built.For complete motor vehicle dimensional checks, a method is required for locating the three-dimensional reference system on a motor vehicle so that points of interest (for example, driver eye location, seating reference point, centerline of motor vehicle, etc.) can be determined.