The positioning device 60 further comprises {HEAD ~ an electric motor} 68 being mounted onto {TAIL ~ the support structure} 62 and for engagement with the pulley assembly 64 
mounted onto
The positioning device 60 further comprises { HEAD ~ an electric motor } 68 being mounted onto { TAIL ~ the support structure } 62 and for engagement with the pulley assembly 64
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH