I have one of these, and it's different than the standard June Taylor Shape Cut. This one has cuts for certain eights. It's made by June Taylor and is relatively new, copyright 2010.
To cut 2-7/8, cut on the green triangles. To cut 3-3/8, cut on the purple stars. To cut 3-7/8, cut on the green circles. To cut 4-3/8, cut on the purple hexigons. And to cut 5-3/8, cut on the purple heart.
I don't cut eights often, and hate it when I do. This ruler makes it a dream!
Oh, I used my 40% coupon, too. With a 40% coupon, I can buy lots of toys!