A more thorough explanation:

The Duke of Exeter's Daughter is a torture device that was used in the Tower of London. It is named after the Duke of Exeter, who introduced it to England during the reign of Henry VI. The device is also known as a "brake."

The rack was used to extract confessions from criminals, but it was not a legal practice in England. The use of torture was introduced by the Duke of Exeter and the Duke of Suffolk, who wanted to introduce the civil law into England. The rack was called the Duke of Exeter's Daughter in derision.

The device was occasionally used as an engine of state, not of law, during the reign of Queen Elizabeth. However, it was not a legal method of obtaining confessions.

Example: During the reign of Henry VI, the Duke of Exeter's Daughter was used to torture prisoners in the Tower of London. The device was used to extract confessions from criminals, but it was not a legal method of obtaining information.

Example: The Duke of Exeter's Daughter was used as an engine of state during the reign of Queen Elizabeth. However, it was not a legal method of obtaining confessions, and its use was controversial.

These examples illustrate how the Duke of Exeter's Daughter was used as a torture device in the Tower of London. The device was not a legal method of obtaining confessions, and its use was controversial.