Description

As above but hand driven and self-exciting, mounted on a wood base. 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 hand wheel 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.

SPECIFICATION:

Diameter of dome 175mm, diameter of discharge sphere 75mm.

overall dimensions 50x 190x 480mm.