Used for making cotton, wool and spun silk yarn intgo sliver and roving with a certain length in order to measure its ev用于摇取棉、毛、绢等条子和粗纱成一定长度，测定其均匀度。
Used for rocking cotton,wool and spun silk yarn into sliver and rocing with a certain length in order it measure its eve用于摇取棉、毛、绢等条子和粗纱成一定长度，以测定其均匀度。
Used for rocking cotton,wool and spun silk yarn into sliver and roving with a certain length in order it measure its eve用于摇取棉、毛、绢等条子和粗纱成一定长度，以测定其均匀度。