a movable carriage for adjusting a position of the ultrasonic unit in {HEAD ~ relation} to the counter tool, with the booster of {TAIL ~ the ultrasonic unit} being fixedly mounted to the carriage; and 
a movable carriage for adjusting a position of the ultrasonic unit in { HEAD ~ relation } to the counter tool , with the booster of { TAIL ~ the ultrasonic unit } being fixedly mounted to the carriage ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH