Feather Electroscopes

    Product Name:  Feather Electroscopes
    Model NO.:  PE046
It is used in demonstrating the distribution of the electronic line in the field and the interaction between charged objects.
Including: 2 same feather structures tied to a round metal pole, some thin paper streaks and two metal trays. There is a screw hole in the center of the metal trays. There is paper streaks between trays; colors of the paper should be different.