{HEAD ~ The front and rear portions} are offset in such a way as to match {TAIL ~ the centerline} of the camera with the centerline of the shoulder and thus aligned with the operators eye 
{ HEAD ~ The front and rear portions } are offset in such a way as to match { TAIL ~ the centerline } of the camera with the centerline of the shoulder and thus aligned with the operators eye
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH