Yes I have one and use it quite frequently when I am paper piecing. It is really a great tool to use and if you are going to do paper piecing it is something that you would deffently use quite frequently. It is only probably only about 5 inches long, yellow and has a 1/4 inch lip on one edge that you place on the edge of your paper piecing that you need to get to a 1/4inch seam to sew your next seam. I would deffently recommend it and it is pretty cheap in the realm of things. Our LQS has it at 6 dollars I do believe. You may be able to get it at JoAnns also, but am not really sure. Hope this helps, Jennifer