The Quick Curve Ruler Mini is 5" x 8" and 1/8" thick.  It is used to cut the curved shapes and square the blocks up after piecing. It includes 14x35 inch pattern for QCR Mini Runner. 

Great patterns to try with the QCR-Mini include Whale Tale, Mod Lights, Mini Wonderful Curves book, and the POSH series: Posh Love, Posh Lucky, Posh Bunny, Posh Spring, Posh Sunflower, Posh Jack O, Posh Gobble, Posh Kitty, Posh Summer, and more!