Lady Justice

The time-honored symbol of justice in the West is the Lady of Justice (adapted from Greek and Roman mythology) depicted as a blind-folded woman with a scale in one hand and a sword in the other.

Lady Justice is the Roman goddess of Justice, who is equal to the Greek goddess Dike. Which is an allegorical personification of the moral force on the judicial systems.
Justitia is seen with a set of scales suspended from her left hand, which she measures the strengths of a case's support and opposition. She is seen carrying a double-edged sword in her right hand, which means the power of the Reason of Justice, which may be for either the against or for of any party.