Prym semi-rigid ruler 21cm

Semi-rigid ruler 21cm. Total size 23x5x0.02cm. Semi-rigid and very practical. Laced part. This practical accessory simplifies the many measuring possibilities that can be carried out manually during sewing, knitting, crochet or directly with the sewing machine. The scale is divided into centimeters and has additional notches to facilitate and measure the marking of the depth of the hem, establish the spacing and length of buttonholes, evenly space pleats as well as other sewing tolerances...