Electroscope Pith Ball

Model HV-EXP4265
Electroscope Pith Ball Science Labs Hoverlabs is Manufacturer, Exporter Supplier of Electroscope Pith Ball Product description: We have mounted an insulated stand on a solid round base. Over the hook at the stands end you dangle a silk thread with a light pith ball attached to each end. Pith balls react sensitively to static charges like those from a charged friction rod. Comes with 3 strings and six 8mm. pith balls..