Triangular Scale - 12" Architect / Engineering Hallow Core Aluminum Size:Engineering The paper surface is smooth

The paper surface is smooth and opaque

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

Extra Features - Designed with double knee joints

making it a heavy-duty tool you will be able to use on many projects to come

Since 1950

Triangular Scale - 12" Architect / Engineering Hallow Core Aluminum Size:Engineering The paper surface is smoothEasy 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