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.