If you thought a single tracing wheel was helpful, then this tool is super helpful for corsetry. Why? Because instead of marking just one line, it can mark two at the same time!
This means that not only can you mark your seam allowance in one clever movement, but you can also mark things like stitching lines and bone chanels with ease too.
Many corsetiers use stitching lines to sew corsets as it is much more accurate than depending on the sewing machine guide on your needle plate to ensure that the corset comes out exactly the right size!
This double tracing wheel comes apart so that not only is it fully adjustable, you needn't use both wheels at the same time if you don't want to!