UCHOME Pit and Sand pendulum:

1. Wood stand, the all metal pendulum converts kinetic energy into potential energy.

2. The extremely fine sand (included) provides minimal friction allowing the pendulum to swing for extended periods of time.

3. As the pendulum swings, it gently draws interesting patterns on the sand. It’s a beautiful dance.
4. The patterns get bigger and smaller repeatedly as the arc of the pendulum changes.

5. Size:can also design as your requirements.

We are direct manufacturer. There are many kinds of sand pendulum with wooden or metal stand ... Welcome Inquiry !