a means for control that disallows an operation that would increase the work radius if {HEAD ~ an overload state} is detected by {TAIL ~ said means} for comparison 
a means for control that disallows an operation that would increase the work radius if { HEAD ~ an overload state } is detected by { TAIL ~ said means } for comparison
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH