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