Heavy-duty acrylic triangles are twice as thick as regular drawing triangles and are convenient for many common layout tasks, especially cabinetmaking. Clear acrylic composition allows complete visibility as you work. Straight edges are 11" on the long leg and offer markings to 1/16". Angles are marked every 15° and at 22.5°. Available in 30-60-90 and 45-90-45 models.