Tracing wheel

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A tracing wheel is an instrument with serrated teeth on a wheel attached to a handle. Used to transfer markings from patterns onto fabric with or without tracing paper, this sewing tool also makes slotted perforations. Such markings might include pleats, darts, buttonholes, notches or placement lines for appliques or pockets. There are two basic types of tracing wheels available to the modern sewer, one with a serrated edge and one with a smooth edge.