I think the tool is a Charming Circle Ruler? If it is, looks like you make the faux cathedral window quilt with circles. I'm pretty sure that all Cathedral Windows quilts are QAYG, adding batting is optional with them.
Here's an interesting one. Cut the circles from 4 patches, makes an interesting back.
http://1.bp.blogspot.com/-7X4Fofa8Rc...0/P6300280.jpg