Used to trasfer design using a tracing wheel

A tracing wheel, also known as a pattern wheel, pounce wheel, and dart wheel, is an instrument with multiple teeth on a wheel attached to a handle. The teeth can be either serrated or smooth.A tracing wheel is a sewing device used to transfer markings to fabric. If generally has a wooden or plastic long handle and a rotating wheel with spikes on the end. This spiky little wheel is just the right tool to add to your sewing utensils.Dressmaker's tracing paper is made to be used with your choice of tracing wheels. It is a special waxed carbon paper that is placed between fabric and the pattern (with the colored side facing the fabric) and then transfers color onto the fabric along the path that your tracing wheel takes.

answer; thats a symptom of hallucinogens,drug abuse;