The two plates are supported in two rigid uprights and driven by belt in opposite direction. Two leyden jars (condensers) made form corning glass and aluminium foil. The whole body is mounted on a wooden base nicely polished. The size of Discs of machines is 300 mm i. Base Size : 13.5 x 8 x 1.1 inches and Circumference of the wheel (METAL) : 4 inch.