ACADEMY Da Vinci Machines Series 

Rolling Ball Timer Plastic Model Kit 18174A

• Using the force of gravity going down due to the weight of the weights, the Da vinci rolling ball timer moves the table through which the beads pass like as a seesaw
• Every time the iron ball comes down from top to bottom, it moves down the table one by one and changes the position of the table.
• Measures the amount of time it takes for the ball to move left, right, up and down, and tells you the time
• Age 8 years above
• Snap together assembly of textured parts
• No batteries, paint, or glue required