Scotty Moore is a legendary guitarist and member of the Rock and Roll Hall of Fame. He is best known for playing on many of the most famous Elvis Presley recordings including "Good Rockin' Tonight", "Baby Let's Play House", "Mystery Train", "That's All Right", "Hound Dog", "Too Much" and "Jailhouse Rock". In the 1960s, Moore released a solo album called The Guitar That Changed the World[?].
... the gyroscope in the Dynabee is fixed to the spinning mass and it rests in a little groove inside the wrist exerciser device, which almost completely covers the gyroscope ...