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Magnet Probe
Magnet Probe (Product Code: SLE/MG/11) is a hand-held field-mapping tool used to show the direction of magnetic fields in three dimensions around magnets and electromagnets in physics classrooms. A small 1.9 cm alnico magnet with blue and red painted poles sits in a freely spinning gimbal, so it swings to line up with the field along the x, y and z axes. The probe is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, alongside other physics lab instruments in India.
Specifications
| Parameter | Detail |
|---|---|
| Function | Maps magnetic fields in 3 dimensions (x, y and z) |
| Sensing magnet | Small alnico bar magnet, 1.9 cm long |
| Pole marking | One pole painted blue, the other red |
| Mounting | Rotating gimbal that spins freely |
| Construction | Durable plastic |
| Overall length | 4-3/4 inch |
| Field sources | Magnets, electromagnets and other sources |
| Product code | SLE/MG/11 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is a Magnet Probe Used For?
A flat plotting compass only shows the field in the plane of the table. The Magnet Probe removes that limit: because its magnet is held in a gimbal, it can tilt up, down and sideways, and it points along the real three-dimensional field line wherever it is held. Moving it slowly over and around a bar magnet shows students that field lines leave one pole, arc through space and curve back into the other, not just around the edges on paper.
The probe works just as well near an electromagnet or a current-carrying coil, so it helps link permanent magnets with electromagnetism. Ask students to trace a path with the probe and sketch the direction of the blue and red ends at each point. Keep it away from very strong magnets when not in use and store it where the gimbal cannot be bent.
Supplier
Jain Scientific Equipments Private Limited, trading as ScienceLab in Ambala, Haryana, India, supplies the Magnet Probe to schools, colleges and science centres. The company sources it as part of a wider range of magnetism teaching items, so probes, magnets and electromagnets can be ordered together.
Tell us how many probes you need for your class groups and we will include them in one quotation. More about the company is on our company profile.
Related Magnets
Field sources and other field-viewing tools to use with the probe:
- Economy Alnico Bar Magnets — bar magnets to map around.
- Iron-Clad Electromagnet — an electromagnet whose field the probe can trace.
- Compass Plotting (Clear) — for comparing flat, two-dimensional plotting.
- Magnetic Field Tube — another 3-D field demonstration.
- Magnetic Field Demonstrator — shows field-line patterns without iron filings.
More field-visualisation items are in the Magnets category.
Frequently Asked Questions
How does the Magnet Probe show a magnetic field in 3D?
The Magnet Probe (SLE/MG/11) holds a small alnico magnet in a rotating gimbal that spins freely. Wherever the probe is placed, the magnet turns to align with the local field, showing its direction along the x, y and z axes.
How are the poles of the probe magnet identified?
The magnet inside the Magnet Probe is painted blue on one pole and red on the other, so the poles are easy to tell apart. Students record which coloured end points towards the magnet or coil at each position.
What size is the Magnet Probe?
The Magnet Probe is 4-3/4 inch long overall, with a 1.9 cm alnico magnet in its gimbal. The body is durable plastic, so it can be passed around a class and moved freely around magnets and electromagnets.
Can the Magnet Probe be used with electromagnets?
Yes. The Magnet Probe visualises the magnetic fields around magnets, electromagnets and other field sources, which makes it useful for comparing the field of a permanent magnet with that of a current-carrying coil.
Who supplies the Magnet Probe?
The Magnet Probe (SLE/MG/11) is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, Haryana, India, to schools, colleges, science centres and dealers in India and international markets.
Request a Quote
For a quotation on the Magnet Probe, contact us through the contact page with the quantity needed, or add it to the enquiry cart.
Last updated: 24 September 2026
