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} 
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 REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL