The discharge sphere is supported on a pivoted arm with a handle and is attached to the top of the driving-wheel pillar.
For connecting accessories, a 4mm socket is provided at the top of the large sphere, and a 4mm earth socket is drilled in the handwheel pillar base.
Sparks in excess of 50mm in length are easily obtained at a slow rate of turning (200 rev/min) and the apparatus is tolerant of moisture and dust.•
Diameter of dome: 200mm.
Diameter of discharge sphere: 100mm.
Overall dimensions: 350 x 190 x 480mm.
Supplied complete with instructions but WITHOUT accessories.