In the embodiment shown, the form has {HEAD ~ an area} of {TAIL ~ diminished width} to aid cutting of the probe shaft at the outside perimeter of the form  
of
In the embodiment shown , the form has { HEAD ~ an area } of { TAIL ~ diminished width } to aid cutting of the probe shaft at the outside perimeter of the form
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH