Potentiometer with Spring Type Press Jockey Manufacturer,Supplier and Exporter in India
Product Code : EL-SI-8112
Jlab Export is a leading Potentiometer with Spring Type Press Jockey Manufacturer,and suppliers in India
Potentiometer with Spring Type Press Jockey (code EL-SI-8112) is a multi-wire slide-wire potentiometer for comparing emfs and measuring small potential differences in school and college physics labs. In place of a pencil jockey it has a spring-type brass sliding jockey that runs on a metal rod, and an overlapping Perspex pointer for reading the raised scale. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Slide-wire potentiometer, available as a 4-wire or a 10-wire model |
| Jockey | Spring-type brass sliding press jockey, replacing the usual pencil jockey |
| Jockey contacts | Four single, sharp, spring-loaded pencil-type contacts, given separately (as listed) |
| Jockey body and movement | Moulded from brass alloy; slides over a metal rod for smooth movement |
| Scale reading | Raised scale, read with an overlapping Perspex pointer |
| Wire tensioning | Pulley arrangement for tightening the wires |
| Quality check | Each potentiometer 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-SI-8112 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Potentiometers?
| Model | Wires | Jockey | Other listed details |
|---|---|---|---|
| This potentiometer (EL-SI-8112) | 4-wire or 10-wire models | Spring-type brass sliding press jockey on a metal rod, with spring-loaded contacts | Raised scale with overlapping Perspex pointer; pulley arrangement to tighten the wires |
| Potentiometer with Pencil Jockey | Four constantan wires of 24 SWG, one metre long (a 10-wire model is also listed) | Pencil jockey with lead | Wires clamped under brass strips and easily replaceable; lock-type brass terminals; 18 mm ply board with mica on top; working manual supplied |
| Potentiometer Single wire | One 0.56 mm constantan wire along a metre scale | Pencil jockey and lead | Plated brass end plates; heavy-duty brass terminals; 18 mm laminated board |
Choose the spring-type press jockey model when students take many balance readings across several wires and you want the jockey guided along a rod instead of held freehand. The pencil-jockey board is the conventional multi-wire design with a fully listed wire specification, and the single-wire potentiometer suits a basic one-wire set-up.
What Is the Spring Type Press Jockey Potentiometer Used For?
A potentiometer measures an emf by balancing it against the fall of potential along a uniform wire that carries a steady current; at the balance point no current is drawn from the cell under test, so the reading is not reduced by the cell’s internal resistance. In class 12 physics practicals it is used to compare the emfs of two primary cells and to find the internal resistance of a cell, and college labs also use it to calibrate an ammeter or voltmeter and to measure small potential differences such as a thermo-emf. On a multi-wire board the wires are normally joined end to end, so a long wire fits on a compact base and the smaller potential gradient allows finer balancing.
In use, the driver cell or battery eliminator, a key and a rheostat are connected across the wire, and the cell under test is connected through a galvanometer to the jockey. Slide the jockey along its rod to the approximate balance point, press it so a contact touches the wire, and move in small steps until the galvanometer shows no deflection; then read the balancing length where the Perspex pointer meets the raised scale. Pressing and releasing, rather than dragging a contact along the wire, avoids scraping it. Use the pulley arrangement to keep the wires taut and straight, as a slack or kinked wire spoils the uniform fall of potential, and switch off the driver circuit between readings so the wire does not warm up and the cell does not run down.
What to Specify When Ordering
- Number of wires — the 4-wire or the 10-wire model.
- Wire and board details — if a syllabus or tender names a wire material, gauge or board size, include it so JLab can confirm the build before quoting.
- Quantity — the minimum order is 10 units; labs often plan one board per student pair.
- Circuit accessories — galvanometer, rheostat, keys, cells and a standard cell are separate items that can go on the same enquiry.
Frequently Asked Questions
What is a spring type press jockey?
It is a brass-alloy sliding jockey that runs along a metal rod above the wires and carries sharp, spring-loaded contacts. You slide it to the reading point and press it to make contact, instead of holding and tapping a pencil jockey by hand.
Which models are available?
A 4-wire and a 10-wire model, both fitted with the spring-type press jockey. State the number of wires in your enquiry.
How are the wires kept tight?
The potentiometer has a pulley arrangement for tightening the wires. Re-tension a wire if it becomes slack, because the method relies on a straight, uniform wire.
Which experiments is it used for?
Mainly comparing the emfs of two cells and finding the internal resistance of a cell in class 12 practicals, plus calibration of meters and measurement of small potential differences in college physics and electrical labs.
Are the galvanometer, cells and rheostat included?
No. This listing covers the potentiometer with its spring-type press jockey. The galvanometer, driver cell or eliminator, rheostat, keys and standard cell are separate catalogue items, several of which are linked below.
What should an export enquiry include?
The model (4-wire or 10-wire), quantity, destination country and port or city, preferred delivery terms such as FOB or CIF, any packing or labelling needs, and the tender reference if there is one.
Who manufactures this potentiometer?
Jain Laboratory Instruments Pvt Ltd, trading as JLab, builds it at its works in Ambala, Haryana, India, and quotes for it directly.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a physics lab instruments manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The potentiometer and its press jockey are built in JLab’s own works rather than bought in from a trader, so schools, colleges, dealers and importers order factory-direct, each board is visually inspected before it is packed, and repeat orders are handled by the maker. The company is registered under CIN U29309HR2017PTC069123 and holds MSME Udyam registration UDYAM-HR-01-0003849 (manufacturing enterprise). JLab exports worldwide and ships to buyers in every region — for example the Czech Republic in Eastern Europe, Kenya in East Africa, Turkmenistan in Central Asia, Angola in Central Africa and Greece in Southern Europe. Tender details are on the JLab lab tenders page.
Instruments for Potentiometer Experiments
- Potentiometer with Pencil Jockey — the multi-wire board with a conventional pencil jockey and lead.
- Potentiometer Single wire — a one-wire constantan potentiometer on a metre scale.
- Standard Cell — a stable voltage reference for standardising potentiometers.
- Moving Coil Galvanometer — a centre-zero DC galvanometer on a stand, used as the null detector.
- Rheostats (Continuous Constantan Type) — a sliding-contact rheostat for setting the current in the driver circuit.
- Plug Key — for making and breaking the driver and cell circuits.
More instruments are in the Scientific Instrument range and the Indian Instruments section.
Request a Quote
JLab quotes as the manufacturer. Use the Add To Cart enquiry button on this page, or send the model (4-wire or 10-wire), the quantity (minimum 10 units), any galvanometer, rheostat or keys you need and your delivery location through the contact page.
Last updated: 8 October 2026
