An efficient design for all the usual electrostatic experiments and for where a continuous source of high voltage is required. It has a strong metal base with profiled hand grips, housing a quiet running a.c. motor. The discharge sphere may be plugged into the base or supported separately, linked to the arching post with a standard 4mm connecting lead.

• Charge Collecting Belt: silicone rubber having excellent insulation resistance

• Tracking: belt-tracking easily adjusted

• Charge Collecting Combs: aluminium mesh, design to be clearly visible

• Spheres: aluminium, 200mm diameter

• Connections: 4mm sockets in dome and base

• Voltage Developed: up to 200kV, depending on ambient conditions, with a spark length of 60mm

• Discharger: spherical 75mm diameter on rod for plugging into the base earth socket or support in a retort stand