Magnetic Plotting Compass Manufacturer,Supplier and Exporter in India
Product Code : EL-SLE-4641
Jlab Export is a leading Magnetic Plotting Compass Manufacturer,and suppliers in India
Magnetic Plotting Compass (code EL-SLE-4641) is a small compass with a magnetic needle set in a circular container, a scale printed on the inside of the base and a glass top through which the direction is read. It is used to plot magnetic field lines around magnets, wires and coils in school and college physics practicals, and comes in 1, 1.5 and 2 inch diameters. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Construction | Magnetic needle set in a circular container |
| Scale | Printed on the inside of the base |
| Cover | Glass fitted on top, for reading the direction |
| Diameters available | 1 inch, 1.5 inch and 2 inch (about 25, 38 and 51 mm) |
| Quality check | Each compass is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-SLE-4641 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Compasses?
| Model | Size | Listed features |
|---|---|---|
| This plotting compass (EL-SLE-4641) | 1, 1.5 or 2 inch | Printed scale inside the base; glass top |
| Plotting Compass (two glass faces) | 20 mm aluminium ring | Glass on both sides; plastic storage case |
| Magnetic Compass Small Size | Small | Needle pivoted between top and bottom glass plates; no dial |
| Magnetic Compass (hinged cover) | 50 mm | Metal case with hinged cover; dial marked with the principal points; locking mechanism |
Choose this compass when students need a scale to read angles and a choice of three sizes — the 1 inch size for close plotting around small magnets, the 2 inch size for easier reading. The two-glass-face and small compasses are listed with glass on both sides, and the hinged-cover compass, with its locking mechanism, is listed for locating positions on a map or in the field rather than for plotting.
What Is a Plotting Compass Used For?
The needle of a plotting compass always lines up with the magnetic field where it sits, so moving it step by step around a magnet traces out a field line. Place a bar magnet on paper, set the compass near the north pole, mark a dot at each end of the needle, then move the compass until the tail of the needle sits on the last dot and mark again. Joining the dots gives one field line, with the arrow in the direction of the needle’s north-seeking end. This is the class 10 activity on magnetic field lines, and the same method maps the field around a straight current-carrying wire, a circular loop and a solenoid. In class 12 it is used to locate neutral points, where the magnet’s field cancels the Earth’s field and the needle shows no preferred direction.
Keep iron clamps, steel rulers and other magnets away from the paper while plotting, and store the compasses well away from strong magnets so the needles do not lose their magnetism or reverse.
What to Specify When Ordering
- Diameter — 1 inch, 1.5 inch or 2 inch, with the quantity of each.
- Quantity — the minimum order is 10 compasses; a practical group usually needs at least one each.
- Magnets and filings — add bar magnets, iron filings or a solenoid on stand to the same enquiry.
Frequently Asked Questions
Which sizes are available?
1 inch, 1.5 inch and 2 inch diameters, about 25, 38 and 51 mm. Smaller compasses follow the field more closely near a magnet; larger ones are easier to read.
What is the printed scale for?
The scale on the inside of the base lets students read the direction the needle points, for example when comparing the needle direction at different places around a magnet or a wire.
How do you plot a field line with it?
Mark the two ends of the needle, move the compass so the tail sits on the head mark, and repeat. The line of dots, joined smoothly, follows one field line from the north pole round to the south pole.
Why does the compass point the wrong way after being near a strong magnet?
A very strong magnet can weaken or reverse a small compass needle. Check the compass against the Earth’s field before a practical and store it away from strong magnets.
Who manufactures this plotting compass?
Jain Laboratory Instruments Pvt Ltd (JLab), at its works in Ambala, Haryana, India. Quotations come directly from the manufacturer.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a school science and physics lab equipment manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The plotting compasses are made at JLab’s own works instead of being bought from a trader, so schools, colleges, dealers and importers buy them factory-direct; each compass is looked over before dispatch, and repeat orders are handled by the manufacturer. JLab exports worldwide and ships to buyers in every region — for example Papua New Guinea in Oceania, Denmark in Northern Europe, Vietnam in Southeast Asia, Ecuador in South America and Tajikistan in Central Asia.
Use It With
- Magnetic Bar Chrome Steel — red and blue painted bar magnets in pairs with keepers, to plot around.
- Iron Filling — a shaker jar of filings to show the whole field pattern at once.
- Solenoid with Terminals on Stand — for studying the magnetic field of a current-carrying coil.
- Oersted Apparatus — shows the effect of an electric current on a magnetic needle.
Browse the full School Lab Equipment range.
Request a Quote
Quotes come direct from the manufacturer. Use the Add To Cart enquiry button on this page, or send the diameters and quantity (minimum 10 units), any magnets or filings to add, and your delivery location through the contact page.
Last updated: 4 October 2026
