{HEAD ~ The pair} of leg means are pivotally mounted to the top and to a secondary member located vertically downwardly from the pivotal connection to {TAIL ~ the top} 
{ HEAD ~ The pair } of leg means are pivotally mounted to the top and to a secondary member located vertically downwardly from the pivotal connection to { TAIL ~ the top }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL