BM RETAIL 1 PCS Triangular Architect Scale Ruler Color Coded Tri Scale (30CM) Ruler(White)
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1.Clearly marked metric scale.2.There are 3 colored faces, each with different proportions.3.Six scales allow architects, engineers and carpenters to make precise drawings.4.3 random color-coded surfaces: 1:100/1:500, 1:250/1:400, 1:200/1:3005.material: plastic6.Ruler length: about 30 cm