Triangular Scale - 12" Architect / Engineering Hallow Core Aluminum Size:Engineering Durable Construction - This parallel

Durable Construction - This parallel straightedge features a rigid phenolic construction with a black satin finish for a sleek yet durable ruling

making it an excellent choice for drafting

tortillions for blending

Extra Features - Designed with double knee joints

Multiple Sizes Available - Available in multiple page sizes

Triangular Scale - 12" Architect / Engineering Hallow Core Aluminum Size:Engineering Durable Construction - This parallelEasy to Use Sharp, easy to read graduations divided into 10, 30, 40, and 50 parts to the inch for precise engineering measurements and various types of projects Multipurpose Ruler Designed for architect, engineer, and mechanical draftsman projects. Great for students, hobbyists, beginners and professionals alike. Durable, Premium Material Constructed of aluminum, this hollow triangular scale is made lightweight and long lasting, so you can use it for