Check the listing for details. Ballistic Pendulum (Economy Grade with Heavy Base). Condition: New. Listed at 82.99 USD. Ballistic Pendulum (Economy Grade with Heavy Base) Includes ballistic launcher, rigid arm pendulum, angle backdrop, steel ball, and release mechanismConvenient angle backdrop makes measurements easierBlack in color with white labelingRigid arm pendulum with rubber headAll pieces are connected and can be moved as one unit The Ballistic Pendulum contains everything needed to measure the momentum of a projected object - the ballistic launcher, rigid arm pendulum, angle backdrop, steel ball, and release mechanism are all included. This unit can be used to aid in the understanding of momentum, velocity, conservation of momentum and energy, potential energy, and kinetic energy. Its sturdy construction and clear labels make it easy to use. Product Details Brand Eisco Product Type Pendulums MPN BLPN14 Check out my other items.