Magnetic Induction Line Demonstration Instrument Help primary and secondary school students understand the formation and shape of magnetic field lines. Model Number:402.3 Subject:PHYSICS Product name:Physical Plane Magnetic Induction Line Demonstration Function:For Lab Study Craft:Hand painting Usage:For School, Teaching, Training, Medical and Hospital Category:Education and science Customer levels:Primary and secondary schools MOQ:1 Pcs Color: As shown Material: Metal Package Contents: 1 * Physical Magnetic Plane Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.