Referring to FIG 3, when the back leg supporting surface 122 is at a higher elevation than the ladder element supporting surface 124 {HEAD ~ the length} of {TAIL ~ the back leg assembly} 26 can be shortened to maintain the ladder element 24 at a ladder angle 38 within a range that provides good stability 
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Referring to FIG 3 , when the back leg supporting surface 122 is at a higher elevation than the ladder element supporting surface 124 { HEAD ~ the length } of { TAIL ~ the back leg assembly } 26 can be shortened to maintain the ladder element 24 at a ladder angle 38 within a range that provides good stability
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH