Note that {HEAD ~ sheave} 180 may be eliminated in {TAIL ~ embodiments} of the invention that utilize a Y axis motor mounted in high enough in support 110 to clear sheaves 173 and 175 
eliminated in
Note that { HEAD ~ sheave } 180 may be eliminated in { TAIL ~ embodiments } of the invention that utilize a Y axis motor mounted in high enough in support 110 to clear sheaves 173 and 175
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL 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