The Omnigrid 4" x 36” Folding Travel Ruler offers full-size functionality in a convenient folding design. Fully extended, the folding travel ruler is long enough to cut bolted fabric or trim finished quilt tops. You can also use the longer length with home decor projects and wider fabric such as quilt backing. There are 45-degree markings along the ruler for bias cutting. Omnigrid's rulers are made of a heavy-duty acrylic that will last for years to come.