Description
Ideal for 3-D demonstrations of magnetic fields. Redesigned for superior viewing over its lifetime, the Magnetic Field Tube is a sealed plastic display cylinder (now scratch resistant) containing 1.3 oz of steel filings. The cylinder has a 1/2″-diam hole through its center in which to insert the super strong alnico cylindrical magnet (included). Tube size, 4″ H x 3″ diam. Comes with multilingual activity booklet.