A touch screen includes a capacitive sensor, a sensor driving portion, and a control portion. A source of water is split into two separate streams. 127 cm to 5 cm of mold material are removed from one side of the centerline of the crown in a conventional mold, at 15% to 85% of the distance from the centerline to the shoulder area of the mold, to obtain a mold shape having the designated change in tread peak height. In some operations, processes are monitored by alarms, but the invention operates on either process data or alarm data. Thus, the user only needs to hold the push portion of the movable handle and the grip portion of the fixed handle by his one hand to unlock and move the movable plate, so that the distance adjustment device is operated by the user’s one hand.