DEZI Aluminum Alloy Triangular Ruler Straight Ruler Architectural Engineering

DEZI Aluminum Alloy Triangular Ruler Straight Ruler Architectural Engineering Black Triangular Scale Ruler Metric Scale 1:100 1:200 1:250 1:300 1:400 1:500 Made of high strength aluminum alloy material, the ruler is sturdy The scale is precise and not easy to be erased. There are three sides having six different scale s in total, meeting your different needs. Delicate workmanship makes the edge smooth and level, helps your drawing and measuring easy and accurate.