PREMIUM DRAFTING RULER- Made from high quality stainless steel and acid-etched markings on both sides, this architect ruler ensures unbelievable durability and accuracy. This stainless steel ruler is calibrated in millimetres and inches, great for drafting in either imperial or metric measurements. Stronger and more durable than aluminum, never worry about bends or inaccuracies when in use. METRIC AND IMPERIAL GRADUATIONS- With clean acid-etched measuring markers in imperial and metric, never make an incorrect measurement because of your tool. Even with this ruler, the markings will never be inaccurate even on curves. Perfect for architects, engineers, and drafters. With a conversion chart etched on the back, never worry about complicated math if you need to convert from one standard to the other. CREATED WITH PROFESSIONALS IN MIND- Lightweight, precision etching,a hanging hole, and stainless steel durability. Never worry about this metal yardstick failing you when you need it most. Made with a strong straight edge for marking and drafting lines. This is the perfect metal ruler for architects, drafters, engineers, and artists. THE PERFECT GIFT - Gift this stainless steel metal ruler to your favorite engineer. Give them a practical, memorable gift that will further their creativity and work to the next level. Premium Drafting Ruler made from high quality stainless steel. Stronger and more durable than aluminum, this architect ruler ensures reliable durability and accuracy.