This sturdy clamp is invaluable for experiments involving energy, motion, acceleration, and more.

• Clamp Hangs Three Pendulums at Once
• Easy-To-Adjust Pendulum Lengths
• Length: 10⅝"
• Topics Include Energy, Motion, Acceleration, and More

It hangs three pendulums at once, and you can adjust any pendulum without disturbing the others. The support arm screws into the included rod clamp and has thumbscrews for suspension cords.

10⅝" in length; it can be used with a 1/2" or 3/4" dia. vertical support rod.