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