carriage control dial
/ˈkaɹɪdʒ kəntɹˈəʊl ˈdaɪəl/
n
English · carriage control dial中文 · 花型选择钮Español · mando de control del carroFrançais · commande du chariot
意味：Button used to choose a type of stitch, select the needles and lift the main carriage from the needle bed.