View 2 of 12" Architectural Scale Ruler Aluminum Architect Scale Triangular Scale Ruler for Architects, Draftsman, Students and Engineers, Blue

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View 1 of 12" Architectural Scale Ruler Aluminum Architect Scale Triangular Scale Ruler for Architects, Draftsman, Students and Engineers, BlueView 2 of 12" Architectural Scale Ruler Aluminum Architect Scale Triangular Scale Ruler for Architects, Draftsman, Students and Engineers, Blue