15 cms long The item for sale is a tracing wheel, which is a type of marking tool primarily used in sewing, pattern making, and leathercraft. Function: It is used to transfer pattern markings (like darts, pleats, buttonholes, or placement lines) from a paper pattern onto fabric or leather, often with or without tracing paper. Mechanism: The spiked or serrated wheel creates a series of small perforations or marks on the material as it is rolled along the pattern lines.
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