3D Magnetic Field Tube

by Dowling Magnets   Item#: 10147   (2 customer reviews)
Price: $19 /each
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Item Description

This amazing plastic tube with iron filings enables one to visualize magnetic fields around an included Alnico magnet. By moving the Alnico (Aluminum-Nickel-Cobalt) cow magnet inside the tube hole iron filings will string together to form visible 3D structures in the shapes of the magnetic field lines. This tube is a great learning tool in demonstrating magnetic fields, and their interaction with iron.


  • Plastic tube with iron filings
  • Alnico (Aluminum-Nickel-Cobalt) cow magnet
  • Instruction/activity booklet
  • Form visible 3D structures with magnetic fields
  • Great introduction to magnetism

Recommended for ages 6 and older.

Box Size: 5.00in (12.70cm) x 3.50in (8.89cm) x 3.25in (8.26cm)
Weight: 0 lb 10 oz ( 0.27 kg )

Small parts. Not for children under 3 yrs.
Contains small and dangerous parts. Not for children under 5 yrs. This product contains small magnet(s). Swallowed magnets can stick together across intestines causing serious infections and death. Seek immediate medical attention if magnet(s) are swallowed or inhaled.

Customer Reviews

Share your opinions with other customers:

  Sweet magnetic field views
Posted on: Jul 16 2013 by: Leroy Maes from Belgium

Fun to try & get as much stick to the middle. You should sell exact copies of this but with water & ferrofluid. I would definitily buy

Posted on: Feb 2 2012 by: Steve Cpherd from USA West Hollywood, CA

Magnets are fun



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