View cart “Liquid Level Apparatus” has been added to your cart. View cart “Tuning Fork Activator” has been added to your cart. Previous Product Next Product Friction Pad, Flannel 150 mm Square. Friction Pad, Flannel quantity ADD SKU: PH45040A-SP Categories: Electrostatic, Sound and Resonance, Tuning Forcks Description Additional information Description 150 mm Square. Additional information Description 150 mm Square. Related products Quick View Quick View ElectrostaticElectroscope, Simple ADD Quick View Quick View Tuning ForcksTuning Fork Sets ADD Quick View Quick View ElectrostaticVan De Graff Generator, Hand Driven ADD