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