Features: This powerful magnetic needle physics lab equipment ensures precise magnetic field direction indication for electromagnetic experiments, great for classroom use. Made from metal, this electromagnetic experiment set offer superior durability and easy operations without complex assembly required. Designed for physics teachers and high school students, this educational tool helps visualize abstract electromagnetic principles during lessons. Perfect for classroom demonstrations, science fairs, and student interest groups, this teaching aid brings electromagnetic concepts to life in various educational site. Safety tested components ensures risk frees learning experiences, making this essential physics demonstration apparatus safe for school laboratory. Specifications: Materials: Metal Color: As The Picture Shows Styles: (Optional) 2 Styles are Available as Shown in the Picture. Size: As The Picture Shows Package Includes: 1 Set of Magnetic Field Demonstrator note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!