Product : This is a pointer electroscope, an essential tool for measuring the potential difference between two charged bodiesMaterial: The pointer electroscope is made of sturdy pp material, ensuring its longevity and reliability in useProduct Dimensions: With a size of 34cmx19cm, this electrostatic experiment equipment is compact and easy to handle, making it suitable for both classroom and lab settingsEducational Tool: This pointer electroscope is for demonstrating the principles of electrostatics in a classroom setting or at home for educational purposesPackage Includes: The package includes a pointer electroscope physics experiment equipment, ideal for teachers use in educational settings Specification: Material: PP Size Chart: 34cmx19cm/13.39inchx7.48inch Package Includes: 1 PiecePointer Electroscope Note: Please allow slightly errors 1-2cm differences due to manual measurement.