"It's just like a t-square, but with frickin' lasers! Sometimes the simplest tools can make the biggest difference in a complex process, and every once in awhile, something emerges that redefines simplicity altogether. Welcome to the new Riley Laser Guiding System. Used just like a T-square and sharpie, the laser system creates a bright crosshair for registration lines on the platen that can be seen on the platen AND on top of the garment. It's designed to fit on all your new format Riley Hopkins presses - 300, 350, AERO, WIN,6-color Riley JR press. Never print crooked again with the simplest tool yet.