SL Laser is regarded worldwide as one of the leading 
  manufacturers of laser projection systems. Automate your Truss 
  Plant with a new laser projection system. See exactly where your 
  components and plates need to be placed for fast accurate setup 
  and fabrication. 
  Each laser head provides a max 21′ projection length. Includes 
  ProDirector series projection heads, system computer, all cables 
  and mounting hardware. Factory installation and training by a 
  qualified technician. Works with all popular truss design 
  software. Custom system lengths for your factory needs.