They're tending to depict Northern/Circumpolar constellations, the scales would be rising due East, setting due West. The scales are shown at Denderah (rather than the Babylonian 'claws'), but also of course if they are directly associate with the scales of Ma'at then they were quite commonly depicted from the Old Kingdom onward, The scales of Ma'at were representative of an aspect of the Celestial Duat and require a figurative stellar counterpart in the night skies, the proper question would have to be, if not 'Libra', then what else was the basis for the motif of the scales within the Hall of Ma'at...?




Morph.