This Omnigrip Ruler puts accuracy at the forefront. Made of heavy-duty acrylic, it measures 2.5 wide by 12.5 long and features markings along all edges plus an extra margin for seam allowances and precise, accurate measuring. Ideal for marking and checking hems, seam allowances, cutting short strips, and sashing, its the perfect tool to add to a quilters arsenalthe special non-slip backing keeping the ruler securely in place and ensuring you achieve smooth, accurate cuts each time.