6" Sewing Gauges, 12 pcUse the Dritz Seam Gauge for repeat markings and even spacing. The sliding marker can be moved and will stay in place for repeated marking. Use to measure and mark seam allowances and hems, mark pattern alterations and designs. This gauge can also be used to mark buttonhole spacing and length; as well as, to evenly space tucks and pleats. Sliding measure sets distance from end of gauge for easy marking of hems Quickly measure and mark buttonhole