Pencil Jockey Manufacturer,Supplier and Exporter in India
Product Code : EL-SLE-4671
Jlab Export is a leading Pencil Jockey Manufacturer,and suppliers in India
Pencil Jockey (code EL-SLE-4671) is a pencil-shaped sliding contact used with Wheatstone bridge, meter bridge and potentiometer apparatus in school and college physics labs. It has an insulated handle, so the student’s hand stays clear of the circuit, and a brass plated contact and terminals for a clean electrical connection to the bridge wire. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Pencil-type jockey |
| Designed for | Wheatstone bridge applications and potentiometer work |
| Handle | Insulated |
| Contact | Brass plated |
| Terminals | Brass plated |
| Quality check | Each jockey 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-4671 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Jockeys?
| Model | Contact | Terminal | Length as listed |
|---|---|---|---|
| This Pencil Jockey (EL-SLE-4671) | Brass plated contact, insulated handle | Brass plated terminals | Not stated |
| Pencil Jockey | Plated brass contact, insulated handle | Plated brass terminal with 4 mm socket | 100 mm |
| Jockey with insulated handle | Plated brass contact, insulated handle | 4 mm plug terminal | 100 mm overall |
All three are for Wheatstone bridge and potentiometer work. Choose the listing with a stated 4 mm socket or plug when you must match existing leads; this jockey suits buyers equipping new bridge or potentiometer sets who can confirm the terminal with JLab at the quotation stage.
What Is a Pencil Jockey Used For?
A jockey is the moving contact that a student presses on the resistance wire of a meter bridge, Wheatstone bridge or potentiometer to find the balance point, where the galvanometer shows no deflection. In class 12 physics practicals it is used to find the resistance and resistivity of a wire with a meter bridge, to verify the laws of combination of resistances, to compare the EMFs of two cells and to find the internal resistance of a cell with a potentiometer. College physics and electrical labs use it in the same way for bridge and potentiometer measurements.
Connect the terminal to the galvanometer lead, then touch the contact gently on the wire at different points rather than dragging it along while pressed: scraping the wire changes its thickness and makes later readings less reliable. Hold the jockey by the insulated handle, keep the contact clean, and store it with the bridge so it does not get lost between practicals.
What to Specify When Ordering
- Quantity — the minimum order is 10 units; many labs order one jockey per bridge or potentiometer plus spares.
- Terminal — mention the plug or socket type your leads use so JLab can confirm the match.
- Bridge or potentiometer — add the meter bridge, Wheatstone bridge or potentiometer to the same enquiry if you are equipping complete sets.
Frequently Asked Questions
What is a pencil jockey used for?
It is the sliding contact for Wheatstone bridge, meter bridge and potentiometer experiments. The student touches it on the bridge wire to locate the null point where the galvanometer reads zero.
Is the handle insulated?
Yes. The jockey has an insulated handle, and its contact and terminals are brass plated.
What length is it, and what terminal does it have?
The length and socket size are not given in this listing. Two related JLab jockeys are listed at 100 mm with a 4 mm terminal; ask JLab to confirm the details of this model if they matter for your set-up.
Why should the jockey not be dragged along the wire?
Pressing and sliding scrapes the bridge wire, which changes its cross-section and therefore its resistance per unit length. Lift the jockey and touch it down at each new point instead.
Do JLab bridges and potentiometers come with a jockey?
That depends on the bridge listing. This page covers the jockey alone; some JLab bridge and potentiometer listings name a pencil jockey as part of the set, so check the listing or ask when you enquire.
What details are needed for an export quotation?
Send the quantity, the destination country and port or city, your preferred delivery terms (for example FOB or CIF), any packing or labelling needs, and the tender reference if the order is for a tender.
Who manufactures this pencil jockey?
JLab, the trading name of Jain Laboratory Instruments Pvt Ltd, makes it at its works in Ambala, Haryana, India, and quotes for it directly as the manufacturer.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a physics and electricity lab apparatus manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The pencil jockey is made at JLab’s own works and not sourced from a trader, so schools, colleges, dealers and importers buy factory-direct, each piece is visually inspected before dispatch, and repeat orders and spares come from the manufacturer. JLab exports worldwide and can deliver to buyers in every region — for example Zambia in East Africa, Chad in Central Africa, Romania in Eastern Europe, Tonga in Oceania and Taiwan in East Asia. Details for tender purchases are on the JLab lab tenders page.
Bridges and Potentiometers for This Jockey
- Meter Bridge and Pencil Jockey — a four-gap bridge with a heavy copper strip on a laminated base.
- Wheatstone Bridge with pencil Jockey — a four-gap bridge with heavy lock-type brass terminals.
- Potentiometer — a potentiometer offered with a pencil jockey for measuring potential in a circuit.
- Potentiometer with Pencil Jockey — a four-wire constantan potentiometer on a ply board with metre scales.
- Nichrome Wire — resistance wire in several gauges for test lengths in bridge experiments.
More apparatus is listed in the 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 quantity (minimum 10 units), the terminal type your leads use, any bridges or potentiometers you need, and your delivery location through the contact page.
Last updated: 4 October 2026
