Instruments of Music & Optics - Mirrors Room

Have you ever stood between two parallel mirrors and seen your reflection repeated in both directions, becoming smaller each time? The first image reflects you at your normal size; the second is reflected from the other mirror and is smaller.
Leonardo described an eight-sided room with eight flat mirrors as the walls. He noted that if a person stood inside, they "will be able to see every part (of themselves) endless times". Leonardo may have used a mirror room like this in his studio, looking through the hole with his right eye to the subject positioned inside, allowing him to freely paint with his left hand.