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