Thước Tam Giác Màu Đen 30cm Bằng Hợp Kim Nhôm Tỉ Lệ 1: 20-1: 500

Materials: Aluminum Alloy Color:Black,Silver,Gold Package Included:1x Triangular Scale Ruler Quanity: 1Pc Size:S Proportion: 1:20/1:25/1:50/:75/1:100/1:125 Large Proportion : 1:100/1:200/1:250/1:300/1:400/1:500 NameTriangular Metal Scale Ruler Product Feature: Aluminum Alloy Triangular Prism Metal Scale, Made of Aluminum Alloy, Precise Scale is Not Easy to Wear, Light and Hard, No Rust is Not Afraid of Falling, Three Colors, Six Ratios, Accurate and Clear Scale, not Easy to Wear, Used for Home Improvement, Engineering Drawings, Etc.