PROFESSIONAL DRAFTING TRIANGLES - Made for architects and engineers. Pacific Arc's drafting triangles will provide accurate lines and precise angles. This is the perfect plastic triangle for quilters, drafters, architects, engineers, and students. HIGH-QUALITY CLEAR TRIANGLES - These triangles are made from .080 inch thick and pure acrylic. The plain and strong edge is designed for long lasting use. With so many uses, from a drafting square to a quilting template, these clear acrylic triangles are perfect for any project. ACCURATE 6 INCH LENGTH- The non-graduated triangle is an accurate 6 inches long. With 30, 60, and 90 degree corners, this triangle is one of the most versatile tools any profession should own. Be able to make perfect angles for any project. THE PERFECT GIFT - Gift these professional triangles to the architect or engineer in your life. About the Drafting Triangle Pacific Arc's Clear 30/60/90 Triangle is one of the must have tools for any architect, drafter, engineer, quilter, or student. With so many uses, these triangles will be the perfect geometry tool for any professional or student. The 6 inch acrylic triangle is a lightweight durable solution for anyone looking for a drafting triangle.