Meter Bridge or Wheatstone Bridge With Pencil Jockey
Product Code : LSK-EAE-11117
Meter Bridge or Wheatstone Bridge With Pencil Jockey (SKU LSK-EAE-11117) is a slide-wire bridge for finding an unknown resistance and the resistivity of a wire by the Wheatstone bridge principle. It is a standard practical apparatus for Class 12 physics and first-year B.Sc. labs. Science Lab Supplies manufactures the bridge at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and supplies it from the factory to schools, colleges, tender contractors and distributors.
Specifications
Each construction detail is listed in the table below. In short, a four-gap bridge of heavy copper strip sits on a 3/4 inch (about 19 mm) laminated base with nine lock-type brass terminals, and a 24 SWG constantan wire runs along a wooden metre scale, clamped to brass end strips so that end errors are negligible.
| Specification | Value |
|---|---|
| SKU | LSK-EAE-11117 |
| Bridge type | Four-gap bridge |
| Bridge strip | Large, heavy copper strip |
| Base | Laminated, 3/4 inch (about 19 mm) thick |
| Terminals | 9 heavy brass terminals, lock type |
| End gaps | Closed by removable copper binding pieces held by the terminals |
| Bridge wire | 24 SWG constantan |
| Wire mounting | Stretched along the top of a wooden metre scale |
| Wire clamping | Securely clamped to brass end strips |
| End errors | Negligible |
| Jockey | Pencil jockey included |
| Lead | Connecting lead included |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Meter Bridge
The meter bridge balances an unknown resistance against a known one along a uniform wire, so the balance length gives the unknown value directly. It is core physics lab equipment in India for the Class 12 practical list and B.Sc. electricity experiments on resistance, resistivity and the laws of combination.
- Class 12 physics: finding the resistance and resistivity of a given wire, with a Resistance Box Plug Type as the known arm.
- Verifying the laws of series and parallel combination of resistances.
- Locating the null point with a centre-zero Galvanometer and closing the cell circuit through a Brass One Way Plug Key.
- B.Sc. labs: comparing two resistances and checking balance points from both ends of the wire.
Press the jockey on the wire lightly and briefly rather than dragging it, so the wire keeps a uniform cross-section.
Standard Scope of Supply
The set comprises the four-gap bridge on its laminated base with nine brass terminals, removable copper binding pieces, the 24 SWG constantan wire on the wooden metre scale, a pencil jockey and a lead for connections. A resistance box, galvanometer, cell and key are not included.
Packing, MOQ and Lead Time
Prices can be quoted for one meter bridge or for one per student pair across a practical batch. Science Lab Supplies shows packing, delivery time and price for the requested quantity on every quotation, and the galvanometer, keys and resistance boxes for the experiment can be listed with it.
Because it holds an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Saudi Arabia, Oman, the Philippines, Nepal, Bangladesh and Zambia. Send your list via the contact page or the enquiry cart, and use the lab tender page when buying against a tender.
Frequently Asked Questions
Is the pencil jockey included?
Yes. The bridge is supplied with a pencil jockey and a lead for connections, so only the resistance box, galvanometer, cell and key need to be added for a complete experiment.
What wire is used on the bridge?
The bridge wire is 24 SWG constantan, stretched along the top of the wooden metre scale and clamped firmly to the brass end strips so that end errors are negligible.
Why does it have four gaps?
The gaps in the copper strip let you connect the known and unknown resistances in separate arms. The two end gaps are closed by removable copper binding pieces, held in place by the terminals, when they are not in use.
Is Science Lab Supplies the manufacturer or a trader?
A manufacturer. The meter bridge is built at the Science Lab Supplies factory in Saha, Ambala, India, and the quotation comes from the same place, with no trading intermediary involved.
Related Bridge and Potentiometer Apparatus
These items cover the jockeys, keys, wires and alternative bridges used in resistance-measurement practicals. They come from the Electrical and Electronics range and related physics stock, and any of them can be added to the meter bridge quotation.
- Pencil Jockey — bakelite moulded handle, brass plated contact and a lock-type terminal for the lead.
- Potentiometer with Jockey Pencil — wooden base with brass blocks, 4 mm sockets and a 100 cm scale.
- Post Office Box Plug Type — measures resistance from 0.1 to 1111000 ohms with a DC battery.
- Portable Wheatstone Bridge Apparatus Circuit Board — four-arm bridge with a ±30 µA centre-zero galvanometer.
- Winston Bridge Kit — includes a 0–20 V digital voltmeter, 0–10 A digital ammeter and 10 Ω rheostat.
- Tapping Key Physics Lab — momentary normally-open key, 24 V DC, up to 2 A.
- SWG Manganin Wire (100g) Spoolm — bare copper-manganese-nickel resistance wire.
Browse the full Electrical and Electronics range, the Lab Meters range for galvanometers, or all physics lab equipment.
Last updated: 9 October 2026
.jpg)
 (1).png)
 (1).png)
.jpg)
.jpg)