Hand driven, mounted on a wooden base. The discharge sphere is supported on a pivoted arm, with a handle for easy adjustment. For connecting accessories, a 4 mm socket is provided at the top of the large sphere, and a 4 mm earth socket is drilled in the handwheel pillar base. Spark of approx. 50 mm in length is easily obtained.
Dimensions of base 350 x 200x 12 mm length x width x thickness.