Elevations 58 which are circular in cross section can be seen at {TAIL ~ the upper side} of {HEAD ~ the support member} 20 
Elevations 58 which are circular in cross section can be seen at { TAIL ~ the upper side } of { HEAD ~ the support member } 20
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH