Hi! Thank you for checking out our product page!Product name: Fan-shaped scale Ratio rulerBrand: ButterflyMaterial: resin materialSpecifications: 1:10/1:15/1:20/1:25/1:30/1:33/1:40/1:50/1:75/1:125Color: white background + black scaleProduct use: clothing design and construction / civil machinery / interior / environmental art / furniture designFeatures: Various specifications, clear scale, light weight and easy to use, easy to carry, soft and tough.Description: Combine various scales commonly used in engineering [large scale/small scale] into t