On the other hand, if the back leg supporting surface 126 is at a lower elevation than the ladder element supporting {TAIL ~ surface} 128, as illustrated in FIG 4, the length of {HEAD ~ the back leg assembly} 26 can be extended to maintain the ladder angle 38 within the useable range 
On the other hand , if the back leg supporting surface 126 is at a lower elevation than the ladder element supporting { TAIL ~ surface } 128 , as illustrated in FIG 4 , the length of { HEAD ~ the back leg assembly } 26 can be extended to maintain the ladder angle 38 within the useable range
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