Braun Electroscope with Accessories
Rugged and sensitive electroscope with various accessories to change its capacitance. A sensitive aluminum vane is balanced in a vertical position on a metal support which is insulated from its base. Four attachments, each equipped with a banana plug which fits the vane system top are included, a 3-inch conducting sphere, a proof plane with detachable insulating handle and an aluminum cup (Faraday Ice Pail). With instructions.