Features: The Electroscope offer precisely static electricity detection, making it essential teaching tool for physics experiment and educational research. High sensitivity static electricity detector device crafted from pp, light in weight, portable, easy to operate, and ensures safety and reliability. Very suitable for physics teachers, students, and science enthusiasts interested in electromagnetism field. Widely used for classroom teaching, laboratory research, science exhibition, electromagnetism experiment and exploration of static electricity concept. Enhancing your understanding of electromagnetism with this physics teaching aid. Specifications: Color: Clear Component: Metal; PP Size: Approx. 5x2.5x6cm/1.96x0.98x2.36in Weight: Approx. 30g Package Includes: 1Piece Static Electricity Experiment Device note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color