Triangular Engineer Ruler 300mm/11.8inch Aluminum Architect Scale for Architects Draftsman Students and Engineers Black Small Scale

Triangle Ratio Scale Ruler; Material：Aluminum Alloy; Measuring Range: 300mm/11.8 inch.

Triangular architect scale designed to facilitate the drafting and measuring of architectural drawings, such as floor plans, blue Prints, and orthographic projections.

High Quality The triangle ratio scale ruler are made of high quality aluminum alloy for superior hardness that reduce wear-outs and insure longevity.

Professional grade for supreme accuracy color coded triangular scale for easy and quick selection of the desired scale.

Wide Application This ruler is great for drafting and measurement of engineer designs, such as blue prints, floor plans, scale drawing or Orthographic projects.