This Killer Tools Laser Tram and Measuring System uses a laser for measurement and for accuracy. It is two systems in one. It acts as a digital measuring tram gauge, measuring out as far as 13'. The carriage-mounted laser also mounts on to a platform connected to a magnet. This laser can be placed on the side of a vehicle along with targets to identify whether a vehicle's frame or unibody is out of alignment. According to the company, this system only takes minutes to set up and comes complete with three different size pointers and a blow molded case.