Heavy-duty High Quality Aviation aluminum, Compared with normal aluminum alloy, aviation aluminum is lighter, more flexible, and less prone to deformation. It can immediately spring back to a flat state even being bent big degrees. Accurate scale, the measuring scope is from 1 to 60 cm. Two sides printed. Professional vary form curve ruler is a must have tool for sewing. Smooth edge and sleek curves: You do not need to worry if it may accidentally scratch your hands or objects during use. Sleek curves help you achieve perfect curve cutting. Perfect tool for pattern making, tailors, students, fashion designers and other DIY lovers, adding fun to your life., Manufacturer: KEARING