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Magnetic Needle, Brass
Magnetic Needle, Brass (Product Code: SLE/PHY/238) is a 75 mm carbon steel magnetic needle on a brass pivot bearing, used to indicate magnetic field direction and to explain how a compass works in school physics classes. Its longer 75 mm length makes the needle's position easy to follow from the back of the room during teacher demonstrations. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Needle material | Carbon steel |
| Length | 75 mm |
| Bearing | Brass pivot bearing |
| Bearing options in this range | Jewel or brass pivot bearing |
| Product code | SLE/PHY/238 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Brass Magnetic Needle Used For?
This needle is a simple way to show what is inside every compass: a magnetised strip of steel, free to turn, that settles pointing north and south. Teachers bring a bar magnet towards each end to show that like poles repel and unlike poles attract, and then place the needle beside a current-carrying coil to find which end of the coil behaves as a north pole.
For accurate results, set the needle on a wooden or plastic bench away from steel stands and other magnets, and let it come to rest before reading its direction. Lift it gently on and off the brass pivot, and keep it separated from strong magnets in storage. As a product from a school lab equipment manufacturer, it is intended for regular classroom handling in magnetism lessons.
What to Specify When Ordering
- The version: this 75 mm brass-bearing needle or the shorter jewel-bearing needle.
- The quantity for demonstration benches or student groups.
- Any magnets, coils or plotting compasses to be quoted in the same order.
OEM Manufacturer
Jain Scientific Equipments Private Limited, trading as ScienceLab, is the OEM (original equipment manufacturer) of the Magnetic Needle, Brass and makes it at its own licensed factory at Saha, Ambala, Haryana, for schools, colleges, dealers and importers in India and international markets. Institutional and tender buyers who need vendor registration details can use GSTIN 06AAECJ8618A1ZT and LEI 3358004HRD1JIVXKYX49. Repeat orders and replacement needles are handled by the manufacturer directly. Read more on the ScienceLab company profile.
Related Physics Lab Equipment
Apparatus that pairs with the needle in magnetism lessons:
- Magnetic Needle Jewel Bearing — a shorter needle on a low-friction jewel pivot.
- Magnetising and Demagnetising Coil — for magnetising steel bars and strips.
- Magnetic Field Demonstrator — shows field-line patterns without loose iron filings.
- Compass Plotting (Clear) — small compasses for plotting fields around a bar magnet.
Visit Physics Lab Equipment for the full range.
Frequently Asked Questions
What size is the Magnetic Needle, Brass?
The Magnetic Needle, Brass is 75 mm long. It is a carbon steel needle mounted on a brass pivot bearing, and its length makes the pointing direction clear to a whole class during demonstrations of magnetic fields and compass action.
How does the Magnetic Needle, Brass differ from the jewel-bearing needle?
The Magnetic Needle, Brass is 75 mm long and turns on a brass pivot bearing, while the Magnetic Needle Jewel Bearing is a shorter needle on a jewel pivot. Choose the brass version for larger, easy-to-see demonstrations and the jewel version where very free movement matters most.
How is the Magnetic Needle, Brass used to explain a compass?
The Magnetic Needle, Brass shows the principle of a compass: the magnetised carbon steel needle, free to turn on its pivot, lines up with the Earth's magnetic field. Bringing a magnet close then shows how nearby magnetic fields change the direction it points.
What if the Magnetic Needle, Brass loses its magnetism?
If the Magnetic Needle, Brass becomes weak after long use or storage near strong magnets, it can generally be re-magnetised, for example with a magnetising coil. Ask us through the contact page for advice or a replacement needle.
Who manufactures the Magnetic Needle, Brass?
The Magnetic Needle, Brass is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Buyers receive quotations directly from the manufacturer.
Can the Magnetic Needle, Brass be supplied in bulk?
Yes, the Magnetic Needle, Brass can be supplied in bulk to schools, institutions, dealers and importers in India and international markets. State the quantity and delivery location in your enquiry and we will send a factory-direct quotation.
Request a Quote
For the Magnetic Needle, Brass (SLE/PHY/238), send your enquiry through the ScienceLab contact page or add it to the enquiry cart; the quotation comes straight from the manufacturer.
Last updated: 24 September 2026
