This flexible measuring instrument is indispensable for drawing one-of-kind curves. Perfect for fashion designers, architects, crafters, woodworkers and more. It allow you to draw perfectly contoured curves with built in measuring. It also helps in transferring curved designs from your plan or original. Simply bend to any curve all the way down to a 1 inch radius and it will hold with minimal spring back. It is made with a lead core completely enclosed in a flexible plastic covering. One side of the tape has a raised edge to prevent ink from marking the tape.