The first T-square without awkward "ears" this tool is the perfect size to use with a clipboard, drawing board, note pad or any straight edged surface. Durable and easy to carrry, this t-square features drilled holes every 1/2" for accurate drawing of vertical lines and is calibrated in both U.S. standard and metric scales. Made with Shatter-Resistant Safe-T® Plastic® and measures 9 3/8" x 2".