Demonstration of the hyperbolic function

On the base plate, there is a metal frame structure. One arm of the vertical structure carries a rotating hyperboloid rod. In the design of plexiglass with a slot, there is an opening. The hyperbolic section shows the mathematical aspect. Hyperboloid bar, although it is flat, with ease passes through the opening in a curved plastic (it is tilted).

Dimensions (cm): 80 x 50 x 50