OLFA Frosted Advantage 6×12 Inch Acrylic Ruler is non-slip for stable and safe cutting. Frosted back with black grid lines for clarity on light- and dark-material. The large bold black numbers are easy to read. The rulers have black grid lines at every inch, dotted black lines mark the half-inch and black tick marks along the solid line mark the quarters and eights. The frosted back grips in place for safe, stable cutting but allows the ruler to be repositioned for small adjustments. USES: The 6×12 inch is a shorter version of the 6×24 inch but with the same versatility and markings. Cut and measure accurate borders, patchwork, strips, and binding. Unique patented Pivot Point angle markings to easily make 15, 30, 45, 60 and 90 degree cuts. For right-and left-handed use. Hole for convenient hanging. Available in 10 sizes. Imported.