Please this is also for you tovah. I will like to notify that the hip curve and french curves respectively does not give desirable result especially dealing with curves on bodice neck hole and armhole. They are useful but not good enough especially for bodice curves. The Frenchcurve is come times too big and hip curve is not curve enough. I will suggest this ruler for we users of professorpincushion. https://www.amazon.com/Designer-Curve-Ruler-Aluminum-Construction/dp/B000V808HG/ref=sr_1_3?ie=UTF8&qid=1490519765&sr=8-3&keywords=Vary+form+curve+rulers+fairgate.
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the_professors_assistant