As represented in the engaged positions of FIGS 2 and 3, the pins 84 seat through selected apertures 14 in the elongated bar 12 to define {HEAD ~ a selected overall length} of the bar 12 extending in a forward direction of {TAIL ~ the bracket housing} 
As represented in the engaged positions of FIGS 2 and 3 , the pins 84 seat through selected apertures 14 in the elongated bar 12 to define { HEAD ~ a selected overall length } of the bar 12 extending in a forward direction of { TAIL ~ the bracket housing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL