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3 Pack Architectural Scale Ruler: There are 3 pieces of Architectural Scale Ruler in the package: 12 Inches blue, 6 Inch black and red. It is enough

3 Pack Architectural Scale Ruler, YIFARUBE 12/ 6 Aluminum Architect Triangular Ruler, Professional Measuring Kit for Architect, Civil Engineer

Scale Ruler Aluminum Alloy 30cm Engineer Triangular Scale

Plastic Triangular Scale Ruler 3 Sides for Architecture Drafting

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White Center Line Yellow Architectural Scale Ruler Aluminum

Mr. Pen- Small Architectural Scale Ruler, Aluminium, 6 Inch, 2

Alumicolor 6-in Pocket Architect Scale Black

Mr. Pen Architectural Triangular Ruler Set with 12 Inch Triangular

Pacific-Arc 560VS 6 Inch Mini Architect Triangular Scale