Features: This 2pack metal leaf electroscope set is essential physics lab equipment for demonstrating electrostatic principles, featuring metal and glass construction ideal for classroom demonstrations and hands on science experiments. Measuring 14x8.5x14.5cm, the electrostatic testing device includes two foil electroscopes with metal rods, designed for clear visibility during charging detection experiments in educational settings. Perfect for educators, STEM students, and science enthusiasts physics teaching tools to explore statics electricity concepts through interactive laboratory activities. Use these electroscopes in classrooms, home labs, or science fairs to visually demonstrate charging transfer phenomena, friction based electrification, and potential difference measurements. Each set comes with two professionally calibrated foil electroscopes, allowing simultaneous comparative experiments while ensuring long lasting performances for repeated physics lab . Specifications: Materials: Metal Rod Size: 14x8.5x14.5cm Package Includes: 2Pcs Foil Electroscopes note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.