stitch length regulator
/ˈstɪmjʊlˌeɪtə ˈtɪp/
n
English · stitch length regulator中文 · 针距调节器Español · regulador de largo de puntadaFrançais · règle-point
意味：Dial used to set the length of the stitch; the numbers indicate the length in millimeters.