QUILTERS RULE-Quick Quarter: 12in, This marking guide has a slotted center which gives a 1/4in seam allowance to either side, Great for making multiple half and quarter square triangle blocks and Flying Geese blocks, A great tool to divide a square! This quilting tool is made of lightweight durable acrylic, Made in USA, Item Height: 12, 75, Item Width: 3, Item Depth: 0, 15 SKU: NTMKGP7967