OwnMy 3 Pack 30CM Solid Aluminum Triangular Architect Scale Ruler Set, 3-Colors-Groove Architectural and Engineer Scale Metal Ruler Set, Laser Etched Scale Drafting Rulers for Civil Engineer Blueprint

It is a specialized ruler. It is used in making or measuring from reduced scale drawings, such as blueprints and floor plans. It is marked with a range of calibrated scales (ratios). Tips: Always make sure your pencil tip is extra sharp and use a drafting or fine-point pen; a wide mark could throw off your measurements, and even the smallest of increments on the paper can translate into a major difference in the structure. Features: ? The architect triangular scale is made from professional grade solid aluminum, heavier than other hollow / plastic architect rulers. ? All measurements are Precision Laser-Etched and will never rub off or smudge. ? The scale ruler designed to facilitate the drafting and measuring of architectural drawings, such as floor plans, blue prints and orthographic projections ? A perfect measuring tool for any architect, draftsman, engineer, or student Specification: Material: Professional Grade Solid Aluminum Color: Multicolor Groove Ruler scale: Precision Laser-Etched Scale Type: Metric Scale Architect's Big Scale: 1:100, 1:200, 1:250, 1:300, 1:400, 1:500 Architect's Small Scale: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125 Standard Metal Ruler: 30CM / 12” Full scale for your choice Package Included: 1 x Big Scale Metric Triangular Architect Scale Ruler 1 x Small Scale Metric Triangular Architect Scale Ruler 1 x Standard Metal Ruler