I bought the set of two 12"x6" rulers that could be used individually or connected into a 12"x12" square or a 24"x6" long ruler. The rulers worked well except that the finish on top of them caused so much glare from overhead lights that I couldn't read the markings. I tried different types of lighting, but nothing changed the glare problem. I'm not sure if it was the shiny finish or just my eyes, but I really had a difficult time using them. After they sat in my sewing room untouched for months, I ended up donating them to my guild's "country store" during the quilt show we held last July. I hated to just give them away because they are a little costlier than regular rulers, but they weren't doing me any good just sitting there. I assume that someone bought them and hopefully can use them successfully.