Rotating Newton Pendulum Ball Balance

Material: Plastic and metal desk topper. desk decor - The swinger is made of material, you can see how the movement works revolving rocker. - A and office desktop decoration and a cool gift for all special occasions desk gadgets. - Funny and useful for those kids who want to learn more about magnet and physics desktop celestial instrument. - It is your outer space themed office or room decoration, also those enthusiastic about science or to demonstrate the laws of physics in science classrooms office decorations.