I have to say I love my new little gizmo..and, I don't know what they call it..but, I love it! (Okay someone can say what it is called if you know!)It looks like a ruler...long about 12" and in the middle is a line...and, the edge either way of it is 1/4"....and, you can use this to mark your 1/4" marks to sew on...so, you can layer 2, let's say 5" square...then mark you lines, sew....On lines...then cut between them which is where the line was on this ruler thingie....which then makes your 2 triangles sets...and, you can keep going across , up and down w/these lines, sewing and then the cut...and, you'd have little pinwheel pieces!:)Such a fun little gizmo..and, such a pretty neon orange...and so sorry I can't name it;)Skeat who paid only a bit over $2 for this entertainment...that keeps going for now I have entertained you!LOL