Prym 611499 Acrylic Dressmaker Ruler 60&frac12; x 24&frac12; cm Mark Uniform/Recurring Spacing Dimensions: 60.5 x 24.5 x 0.5cm. For marking uniform or recurring spacings. Perfect for seam/hem allowances, button holes, pleats etc. Perfect on neckline and sleeve/armhole curves and on hip, crotch and waist curves. Foam-backed nylon covering allows easy pinning and marking.