It should be noted that the embodiments are applicable to a piezoelectric resonator element having one resonating arm or {HEAD ~ a piezoelectric resonator element} having two or more of {TAIL ~ resonating arms} 
having more of
It should be noted that the embodiments are applicable to a piezoelectric resonator element having one resonating arm or { HEAD ~ a piezoelectric resonator element } having two or more of { TAIL ~ resonating arms }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL