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