Heavy-duty High Quality Material 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. Two sides printed, Metric and Inches Design improving your working efficiency. Professional vary form curve ruler is a must have tool for sewing. Perfect tool for pattern making, tailors, students, fashion designers and other DIY lovers, adding fun to your life. L-Square:24" x 14" size. Mutiple Scales on one side, (1:2 inch)&(1:3 inch)&(1:4 inch)&(1:6 inch)&(1:8 inch)&(1:12 inch)&(1: 16 inch)&(2:3 inch)., Manufacturer: KEARING