TRIANGLE RULER: Precision ruler with double bevel cut-out center and lightweight design for easy pick up; Perfect for your drafting and drawing needs ACCURATE MEASUREMENT: Measuring ruler featuring precise graduations with beveled edges for smudge free inking EASY TO USE: Scale ruler made of clear transparent acrylic which allows viewing through to the page while you work DURABLE MATERIAL: The surface of this plastic scale ruler resists scratches and breakage MULTI PURPOSE: This measuring tool is ideal for artists, designers, architects, engineers, and students Ruler included in image for scale