Device for Demonstrating Magnetic Field Lines (Product Code: SCL1577/025) makes the invisible field around a magnet visible without iron filings. It has six transparent plates arranged diametrically at equal spacing, each carrying many small ferromagnetic arrows that move easily and line up with the local field, so students see both the shape and the direction of the field lines. One plate is interchangeable, and an interchangeable plate with an arcuate notch lets the device sit on a U-shaped magnet model. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, as a clean, reusable demonstration model for the physics lab.
| Parameter | Detail |
|---|---|
| Plates | Six transparent plates, diametrically and equally spaced |
| Interchangeable plate | One of the plates is interchangeable |
| Field indicators | Many easily moving ferromagnetic arrows on the plates |
| U-magnet fitting | An interchangeable plate with an arcuate notch for installation on a U-shaped magnet model |
Bring a bar magnet to the device and every arrow swings to point along the field at its own position. Because the plates are spaced evenly around the device, the arrows show the pattern in several planes at once, helping students understand that a magnetic field fills the space around a magnet rather than lying flat on a sheet of paper. The arrowheads also show direction, from the north pole round to the south pole, which iron filings cannot do.
Swapping in the notched plate and seating it on a U-shaped magnet model reveals the concentrated, nearly parallel field between the two poles, a useful comparison with the bar-magnet pattern. Teachers can also place the device near an energised electromagnet to show that a current-carrying coil produces the same kind of field. After use, keep strong magnets away from the device during storage and clean the plates with a soft dry cloth.
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, incorporated under CIN U29309HR2020PTC087597, with its base in Ambala, Haryana. The company manufactures at its licensed factory at 449, HSIIDC Industrial Area, Saha, Ambala (Factory Licence AMB-ONLINE-CHD-J-414); the company profile gives further background.
Magnets and detectors that work with this field-lines device in the same lesson:
See the Lab Equipment category for more magnetism apparatus.
How many plates does the device have?
Six transparent plates, arranged diametrically and equally spaced, each carrying freely moving ferromagnetic arrows.
Are magnets included?
The listing describes the plates and arrows but does not include magnets. Order bar or horseshoe magnets separately, or ask us to confirm contents through the contact page.
What is the notched plate for?
Its arcuate notch lets the plate be installed on a U-shaped magnet model, so students can study the field between and around the two poles.
How is this better than iron filings?
There is no loose powder to spill or clean up, the display is ready again instantly, and the arrows show the direction of the field as well as its shape.
How should the device be maintained?
Wipe the plates with a soft dry cloth, avoid solvents that could cloud the transparent material, and store it away from strong magnets so the arrows are not left permanently magnetised in one direction.
Can you supply it for school tenders or overseas buyers?
Yes. Send the quantity, delivery location and any vendor documents you need; we quote for institutions in India and international markets.
For a quotation on the Device for Demonstrating Magnetic Field Lines, get in touch or add it to the enquiry cart together with the magnets you plan to use.
Last updated: 24 September 2026