Lady Justice is the symbol and personification of justice. Lady Justice is based on Justitia, the Roman goddess of justice. The personification of justice balancing the scales of truth and fairness dates back to the Goddess Maat, and later Isis, of ancient Egypt. Ancient Rome adopted the image of a female goddess of justice, which it called Justitia. Since Roman times, Justitia has frequently been depicted carrying scales and a sword, and wearing a blindfold. (from Wikipedia)
(from Google images)
Her modern iconography frequently adorns courthouses and courtrooms, and conflates the attributes of several goddesses who embodied Right Rule for Greeks and Romans, blending Roman blindfolded Fortuna (fate) with Hellenistic Greek Tyche (luck), and sword-carrying Nemesis (vengeance).
Justitia is most often depicted with a set of scales typically suspended from her right hand, upon which she measures the strengths of a case’s support and opposition. She is also often seen carrying a double-edged sword in her left hand, symbolizing the power of Reason and Justice, which may be wielded either for or against any party.
(Bailey making herself blind with plastic flower pot on her head)
Since the 15th century, Lady Justice has often been depicted wearing a blindfold. The blindfold represents objectivity, in that justice is or should be meted out objectively, without fear or favor, regardless of identity, money, power, or weakness; blind justice and impartiality.