The probe shaft is aligned so that {HEAD ~ the rough specimen} on the probe tip is inside the perimeter of the specimen assembly form , preferably in or near the geometrical center of the open area of {TAIL ~ the specimen assembly form} 
The probe shaft is aligned so that { HEAD ~ the rough specimen } on the probe tip is inside the perimeter of the specimen assembly form , preferably in or near the geometrical center of the open area of { TAIL ~ the specimen assembly form }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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 TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL