Here is what some people have said about the ruler and method:

• "If you have ever wondered what went wrong when making flying geese blocks or snowball blocks, then this is the ruler for you. The Perfect Corner Ruler™ will give you perfect corners in four easy steps.... Take the fear out of diagonal piecing. This is a must-have for most quilters." - Quilter's World, December 2011, page 8.

• "Use the Perfect Corner Ruler to make Snowball and square-in-a-Square blocks, Flying Geese, and star points with accuracy and very little waste.... Perfect patchwork!" - Fons & Porter's Love of Quilting, January - February 2012, page 10.

• "The Perfect Corner Ruler is a very cool new ruler that changes the way corner triangles are put on blocks. It works with any shape block where you want to add a corner triangle with equal length legs, such as snowballs, flying geese, square-in-a-square and star points. It also helps with accuracy in piecing corner triangles, as it replaces the traditional “sew and flip” method. Because this ruler utilizes a new technique, Perfect Corner has created the following demonstration video explaining just how the ruler works. Check it out!" - Fab Shop NetworkFabtalk™ Cool Tools

• "Had a great quilt retreat and sold all the Perfect Corner Rulers™, except the one I have away for a door prize. I would like to order 10 new Perfect Corner Rulers™. I have already presold three of them. The Perfect Corner Ruler™ is a great product" - Joan Marshall, Joan Marshall Quilting Service, Livingston TX.

• "Ruth,  I purchased the perfect corner ruler at the Philadelphia Quilt Show – I wish I had seen this product years ago.  Used it for the first time earlier today, and it is wonderful.  Easy to understand, use, and above all—saves fabric.  Excellent Job!!!!" - A.W., Endicott, NY

• "There is finally a solution to corner triangles that works accurately and saves fabric!" - Marylin Roaldson Nicholson, Designer Fabrics Quilt Shop, Carrington ND

• "Using this tool results in straight block edges, maintaining the original block size. Assure accuracy of seam allowance and keep points from being cut off during assembly. Excellent for beginners or anyone frustrated by inaccurate corner triangles. Compatible with existing patterns and saves fabric too!" - Clotilde

• "If you have ever wondered what went wrong when making flying geese blocks or snowball blocks, then this is the ruler for you. The Perfect Corner Ruler™ will give you perfect corners in four easy steps: measure, make corner square, sew, and square. the ruler comes with complete instructions and diagrams. Take the fear out of diagonal piecing. This is a must-have for most quilters." QuiltersWorld Magazine, December 2011

• "Just wanted you to know how much I like your ruler. I always had a problem with those corners.... Not any more.... I absolutely love it". - PS

• "Quilter's World Favorites -- The Perfect Corner Ruler™ - This ruler helps give you perfect corners in 4 easy steps. To read more about why we love this product, check out our December issue, which is currently available to digital subscribers."

• "You get the accuracy of paper piecing without having to bother with all of the paper." - DB

• "It keeps my blocks' edges straight and square." - CF

• "It kept my edges from being pulled down into the feed dogs!" - CF

• "It is incredibly simple!" - CG

• "It’s wonderful! It uses less fabric! Now I don’t have to make all those pot-holders from the discarded triangles." – RS

• "It works! Go forth and sell! I liked the accuracy, especially in adjacent blocks, like snowballs, where you need the seams to line up." – DK

• "This is revolutionary!" - Industry Insider

• "Perfect corners and perfect points." - Industry Insider

• "Ruth always comes up with these great ideas!" - Husband