means for detecting a reference position of a presetting device in a non worn state when press elements in {HEAD ~ an actuated state} of {TAIL ~ a manual pliers} are brought into a position which has a reference degree of pressing by adjusting the presetting device 
of
means for detecting a reference position of a presetting device in a non worn state when press elements in { HEAD ~ an actuated state } of { TAIL ~ a manual pliers } are brought into a position which has a reference degree of pressing by adjusting the presetting device
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH