Stainless steel rulers are a great addition to your tool kit. The Spear & Jackson 150mm Stainless Steel Ruler is designed for professional use. The 1.5mm thickness provides additional stability, while maintaining flexibility to measure rounded surfaces. The double sided metric markings including 0.5mm increments on one edge and full mm increments on the opposite edge. The heavy duty acid etched blade is perfect for marking out accurate cut lines, scribing joints, setting out exact measurements and drawing straight lines.