This must be one of the oldest Executive Toys available, Newton's cradle.
It was named after Sir Isaac Newton, and is used to demonstrate conservation of momentum and energy via a set of swinging spheres.
The Newton's cradle is made up of a series of identically sized metal balls hanging in a metal frame and they are set so that they just touch when stationary, then when the end one is moved a allowed to bounce on the next ball a chain reaction is started.
A great one for a desk as this executive ball clicker is a great thinking device!
Make this Newtons Cradle a little bit special by having it engraved with a personal message of 2 lines of 25 characters.
Size: 13 x 12 cm approx