This electrostatic detector is an essential tool for physics classroom experiments, allowing students to visually understand electromagnetic principles. Its high sensitivity design easily detects static electricity and weak currents, making it ideal for professional research. Compact and portable, it is ideal for classroom demonstrations, laboratory research, and exploration. Made from materials, it ensures long-term performance, reducing the need for frequent replacements. Simple to operate, it is suitable for learners of all ages, enhancing their interest and understanding of physics experiments. Features -Color:Assorted Color -Material:Plastic,iron -Size:34.00X19.50X7.00cm/13.36X7.66X2.75in -High sensitivity detection: easily detect static electricity and weak currents with this physics experiment tool, ideal for science lab static detectors and electrostatic experiments - design: crafted from materials, this static electricity science kit ensures performance for physics classroom experiments and laboratory teaching supplies -Portable and versatile: compact and lightweight, this physics experiment equipment is ideal for classroom demonstrations, projects, and electromagnetism teaching equipment -Userfriendly operation: designed for simplicity, this static charge detector requires no complex setup, making it an excellent physics teaching tool for learners of all ages -Enhance learning experience: demonstrate electromagnetic principles effectively with this physics education tool, boosting student engagement and understanding during science experiments Package list: 1 x Needle Electric Tester