To this effect, means for sensing an abnormal condition of {TAIL ~ the machine tool} is provided in the vicinity of an essential portion of {HEAD ~ the machine tool} 
To this effect , means for sensing an abnormal condition of { TAIL ~ the machine tool } is provided in the vicinity of an essential portion of { HEAD ~ the machine tool }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD