This triangle is amazing. It has the three attributes I need: (1) clear, unbending, durable acrylic (2) an edge that is flush with the paper, tapering to a fine edge (rather than a thick one that is hard to see where your line will end up going), (3) is long enough to go across the entire paper size that I use. I also appreciate the fact that it has an imprinted grid and rulers. This is extremely well made and fixes all of the complaints I had about the others I've purchased in the past from other brands. Do yourself a favor and spend the money - it's totally worth it, and you won't need another (unless you want a smaller one just like it!) I wouldn't mind having an even larger one for larger papers, but I can't find any.
Rating: [5 of 5 Stars!]