EBaySet of 3 Architectural Scale Rule is a lightweight and durable feel making it easy to use for any project. 12 Inches triangular architect scale is designed to facilitate the drafting and measuring of architectural drawings, such as floor plans, blue prints, and orthographic projections. Classic architect triple-sided scale is convenient and useful for professional use. Package: 3 pack architectural scale ruler Features: One 12" triangular architect's ruler features 3 sides with 6 different scales  Professional grade for supreme accuracy 3 different color grooves for quick and accurate selection of the desired scale  Made from high grade anodized aluminum Imperial scale: 1-1/2", 1, 3/4", 3/8", 3/16", 3/32", 1/2" 1/4", 1/8", 3, 16 Ideal for architects, engineers and Students Package included 3 pack 12 inches individual rulers, each rulers has 3 sides, is designed to facilitate the drafting and measuring of architectural drawings, such as floor plans, blue prints, and orthographic projections. Triangular ruler is made from high impact aluminum, build to last. With durable laser cut imperial prints for accuracy. They will not wipe or scratch off ever. The aluminum triangle ruler is professional grade in reliable construction and accurate performance. The scale ruler is ideal for architects, engineers, draftsmen and students. Color-coded grooves in triangular scale for quick and accurate selection of the desired scale. Compatible with Sharp graduations and precise markings perform well on any surface. Imperial scale: 1-1/2, 1, 3/4, 3/8, 3/16, 3/32, 1/2, 1/4, 1/8, 3, 16. Package: 3 pack architectural scale ruler. Classic architect triple-sided scale is convenient and useful for professional use.