I have the Morplan patternmaster (which I bought online millions of years ago) and I love it. It has straight edges, angles, the curves of a french curve, and more), it also has 0.5 cm increments up to 6cm I think it is using the straight edge, which is excellent for adding seam allowances quickly and easily. Other than my metre rule, it is my most used measuring implement and is in fact used more than my rule. Definitely worth the money.