The Rolling Ball Timer by Academy is the newest addition to the Da Vinci line of kits. The Ball Timer is based on a sketch of an escapement mechanism drawn by Leonardo Da Vinci. The kit uses the principles of gravity and kinetics to measure the passage of time. It employs precision gears to power a platform in a “see saw” pattern that propels a rolling ball. When complete, it exhibits concepts relating to the laws of motion and delivers hours of entertainment.Read the Review
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