On the Shoulders of Giants: Benjamin Banneker By the time Banneker was 22 he built a string wall clock which he modeled after a pocket watch. The most brilliant thing about the wall clock is he had never seen one before he created his. He used wood and his pocket knife to create the clock; it is stated that the clock still worked even after Banneker’s death. He even taught himself astronomy and it would pay off for him later in life. Visit us at www.Liveskilled.com mail@Liveskilled.com FB: On the Shoulders of Giants Twitter: @Liveskilled Google+: Live Skilled