What is the cipher wheels purpose?

Cipher wheels, also known as Caesar wheels or encryption wheels, are tools used to simplify the process of encoding and decoding messages using substitution ciphers. They consist of rotating discs marked with letters, allowing users to easily shift the alphabet to create a cipher. By aligning the discs, users can encrypt a message by substituting each letter with the corresponding letter from the shifted alphabet, and vice versa for decryption. This method helps in understanding and applying basic cryptographic principles.