FIG 1 shows a first limit switch 26 near {HEAD ~ the front end} of {TAIL ~ the right hand spherical guide} 8 and a second limit switch 27 near the rear end face of the spherical guide 
of
FIG 1 shows a first limit switch 26 near { HEAD ~ the front end } of { TAIL ~ the right hand spherical guide } 8 and a second limit switch 27 near the rear end face of the spherical guide
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH