First of all, I would like to announce that the ruler now being shipped is Version 2 of my Perfect Trim ruler. I removed a couple lines that I did not use, and added a 3/16" line and a 1/4" line. I believe the changes will make the ruler even better!
Also, if you would like to see a demo of this ruler, check out this highlight from a recent class by Kathy Orta at Paper Phenomenon. I would like to say a very special thank you to Kathy for doing such a great job demonstrating the ruler in her Ustream classes. She also has fantastic tutorials available on her website. They are very detailed and easy to follow.