Alumicolor 12-inch Aluminum Engineer Hollow Scale for School, Office, Art and Drafting, 12IN, Black

12"" ALUMINUM DRAFTING SCALE - High-quality, photo anodized aluminum scales have a large profile, hollow core, and tapered edges. PROFESSIONAL ENGINEER SCALE - Each scale allows for easy identification of the most frequently used calibrations which is a must-have tool by drafting professionals and engineer students. ENGINEER DRAFTING SCALE - Calibrations of engineer scale are 10, 20, 30, 40, 50, 60 parts per inch. BLACK HOLLOW TRIANGULAR SCALE - These scales are lightweight for easy portability and offer a more affordable price. ALUMICOLOR IS QUALITY - Made with the highest quality extruded aluminum all scales have smooth edges and are calibrated to exact specifications, scales feature a hollow core and will stand the test of time