Also, {HEAD ~ the weighting block} 22 is arranged at the casing 12 in {TAIL ~ a manner} to be inserted through the aperture 24 at each of the corners 
is arranged in
Also , { HEAD ~ the weighting block } 22 is arranged at the casing 12 in { TAIL ~ a manner } to be inserted through the aperture 24 at each of the corners
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH