This 4-1/2in square ruler from Creative Grids® is ideal for working with 5in precuts. USA-made acrylic with precision measurements and non-slip grip technology keeps the ruler in place while cutting. Features easy-to-read black and white markings in 1in grids with 1/8in and 1/4in increments. Includes exclusive Turn-a-Around feature for 1/2in cuts, dashed lines for seam trimming, 45-degree diagonal for half-square triangles, and center lines for squaring up blocks.