By an adjustment of the presetting device, {TAIL ~ the press elements} are brought into a position with {HEAD ~ a reference degree} of pressing 
By an adjustment of the presetting device , { TAIL ~ the press elements } are brought into a position with { HEAD ~ a reference degree } of pressing
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH