Medieval lottery mechanism

That's the statue of Matt, the goddess of law, also known as the goddess of justice. The appearance of the goddess of justice is generally described as "blindfolded, with a scale in one hand (justice by power) and a sword in the other (justice by law)". The sword has no scales, but it is violent; A scale without a sword is just justice in name only. The two are interdependent and complement each other. Only when the power of sword is coordinated with the skill of weighing instrument can the law be implemented. The origin of the goddess of justice can be traced back to a long time ago. The goddess of justice in ancient Egypt was called Matt. Matt's appearance is usually described as holding a sword and wearing ostrich feathers (but without scales), symbolizing truth and justice. The word "sheriff" comes from "Matt" because she helped Osiris judge the dead by weighing their hearts.

Blindfold symbolizes judging right and wrong with the naked eye, not being confused by external phenomena, and insisting on implementing fairness and justice with scales.