This machine is a low price machine with high quality use for classroom demonstration of high voltage electrostatic charges.  The rotating disks are of clear acrylic.

The foil srtips and brushes are  of good quality as are the insulated cylindeical capacitors.

Turning the crank will spin the disks and charge them to a very high voltage. This will be noticeable in several ways including the noise of small sparks between the foil

sectors, an ozone smell, and the tingling in your hand caused by the electric field. Drier conditions will give better results.

Dimensions:  11.6*7.3*13 inch  (29.5*18.5*33 cm