As can be seen in FIGS 1 and 2, close to the upper portion of the pivot 19 is a cylindrical section 25 off {HEAD ~ centre} with {TAIL ~ respect} to the axis of rotation of the pivot 
with
As can be seen in FIGS 1 and 2 , close to the upper portion of the pivot 19 is a cylindrical section 25 off { HEAD ~ centre } with { TAIL ~ respect } to the axis of rotation of the pivot
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 HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH