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Meter Bridge
Meter Bridge (Product Code: SCL-341/069) is a one-metre slide-wire bridge used to determine unknown resistance and the resistivity of a wire in school and college physics laboratories. A single 1 m length of 24 SWG bare constantan wire runs along a rule divided in centimetres and millimetres on a powder-coated aluminium extrusion, and a jockey is supplied. It is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Wire | Single bare constantan wire, 24 SWG, 1 m long |
| Scale | Metre rule sub-divided in centimetres and millimetres |
| Mounting | Powder-coated aluminium extrusion |
| End clamps | Brass plates; the clamping makes contact at the exact ends of the scale, leaving virtually no margin for end errors |
| Terminals | Heavy-duty 4 mm socket terminals on the terminating strips |
| Supplied with | Jockey |
| Product code | SCL-341/069 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Meter Bridge Used For?
The meter bridge works on the Wheatstone bridge principle: with a known resistance on one side and the unknown on the other, the jockey is tapped along the wire until a galvanometer reads zero, and the balancing length gives the unknown value. Classes use it to find the resistance and specific resistance of a wire, to verify series and parallel combinations, and to compare two resistances.
Measuring the wire's diameter with a screw gauge alongside the balancing lengths lets students calculate resistivity, a standard physics practical at senior secondary level and a routine item in any meter bridge lab. Tap the jockey rather than sliding it, interchange the known and unknown resistances and average the results, and keep the constantan wire free of kinks.
What to Specify When Ordering
- Number of meter bridges needed, usually one per student group.
- Whether a galvanometer, resistance box, plug key and cell should be quoted with it.
- Spare jockeys or replacement constantan wire, if your laboratory keeps them in stock.
OEM Manufacturer
Jain Scientific Equipments Private Limited, known to customers as ScienceLab, is the OEM for this meter bridge and produces it at its own licensed factory at Saha, Ambala, Haryana, India, rather than buying it in from a trader. Institutions and dealers can order factory-direct, and questions about replacement wire or jockeys go straight to the manufacturer. Read about the company on the ScienceLab profile page.
Related Physics Lab Equipment
For resistance and resistivity practicals on the meter bridge, laboratories usually add:
- Moving Coil Galvanometer — centre-zero detector for locating the balance point.
- Resistance Box — the known resistance for the comparison.
- Screw Gauge — measures wire diameter for resistivity calculations.
- Constantan Wire — sample wire for resistance and resistivity experiments.
- Jockey — a spare sliding contact for student sets.
The Physics Lab category lists further bridge and circuit apparatus.
Frequently Asked Questions
What wire is used on the Meter Bridge?
The Meter Bridge uses a single 1 m length of 24 SWG bare constantan wire. Constantan is chosen for bridge wires because its resistance changes very little with temperature, which keeps balancing lengths steady throughout a practical session.
How does the Meter Bridge minimise end errors?
On the Meter Bridge, the constantan wire is clamped to brass plates by a system designed to make contact at the exact ends of the scale. This leaves virtually no margin for end errors, although interchanging the resistances and averaging remains good practice.
Is a jockey included with the Meter Bridge?
Yes, the Meter Bridge is supplied with a jockey. A galvanometer, resistance box, cell, plug key and connecting leads are needed to complete the circuit, and they can be added to the same quotation on request.
What kind of terminals does the Meter Bridge have?
The Meter Bridge has heavy-duty 4 mm socket terminals on its terminating strips, so it accepts standard 4 mm banana-plug leads. This allows quick, firm connections to the galvanometer, resistance box and cell during class practicals.
Who manufactures the Meter Bridge?
The Meter Bridge is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory in Saha, Ambala, Haryana, India. Schools, colleges, dealers and importers receive quotations straight from the manufacturer.
What should a Meter Bridge quotation request include?
For a Meter Bridge quotation, state the number of units, the accessories you need with them, and the delivery location in India or abroad. Send these details through the contact page and the manufacturer will reply with a quotation.
Request a Quote
To buy the Meter Bridge, use our contact page or the enquiry cart to tell us your quantity. The manufacturer will respond with a quotation.
Last updated: 24 September 2026
