A marking or labeling machine which includes at least one marking or labeling member and a feed mechanism for bringing workpieces for marking or labeling into register with the at least one marking or labeling member. The feed mechanism includes at least two arms mounted to turn about a common first axis, with each arm carrying at least one support member for supporting a workpiece for marking or labeling, and also includes secondly independent drives for driving each of the arms in rotation about the common first axis independently of the other arm.