Resistance Box Plug Type (Superior Type) Manufacturer,Supplier and Exporter in India
Product Code : EL-SLE-4698
Jlab Export is a leading Resistance Box Plug Type (Superior Type) Manufacturer,and suppliers in India
Resistance Box Plug Type (Superior Type) (code EL-SLE-4698) is a superior-quality plug-type resistance box that supplies known resistances when finding an unknown resistance in physics practicals such as the meter bridge experiment. It is listed in 100, 500 and 1000 ohm values, with all resistors calibrated on an imported testing bridge to ±0.1%. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Get a quote: use the Add To Cart enquiry button below, or send your quantity and destination through the contact page.
Specifications
| Parameter | Detail |
|---|---|
| Type | Plug-type resistance box, superior quality |
| Resistance values | 100 ohms, 500 ohms and 1000 ohms (as listed) — state the value you need in your enquiry |
| Calibration | All resistors calibrated on an imported testing bridge |
| Accuracy | ±0.1% (as listed) |
| Application | Measuring unknown electrical resistance in physics lab experiments |
| Construction details | Coil wire, plug material and case are not stated in this listing — ask JLab for them with your quotation |
| Quality check | Each resistance box 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-4698 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Resistance Boxes?
| Model | Type | Values or ranges listed | Other listed details |
|---|---|---|---|
| This box (EL-SLE-4698) | Plug type, superior quality | 100, 500 and 1000 ohms | Resistors calibrated on an imported testing bridge, ±0.1% |
| Resistance Box Plug Type (Economy Type) | Plug type, regular quality | 50, 100, 500 and 1000 ohms | Same calibration statement (imported testing bridge, ±0.1%) |
| Resistance Box Electronic Type | Electronic type | Variations from 50 ohms to 1000 ohms | Listed for general physics laboratory experiments |
| Resistance Box Decade Type (Single Dial) | Decade type, single dial | 0–1, 0–10, 0–100 and 0–1000 ohm ranges | Value set with a knob instead of plugs |
| Resistance Box | Brass plug type, deluxe quality | 1 to 1000 ohms | Constantan coils, brass blocks, teak wood case |
Choose this superior plug-type box when you want a 100, 500 or 1000 ohm box whose listing states the ±0.1% calibration. The economy version adds a 50 ohm value in regular quality, the decade box lets students turn a dial rather than pull plugs, and the deluxe brass plug box is the one whose listing names its coil wire and teak case.
What Is the Plug-Type Resistance Box Used For?
A resistance box gives a known, adjustable resistance in a circuit, which is how an unknown resistance is found in the bridge and potentiometer practicals of class 12 physics: the resistance and resistivity of a wire with a meter bridge, the laws of combination of resistances, the internal resistance of a cell with a potentiometer, the half-deflection method for a galvanometer and its conversion into an ammeter or voltmeter. In class 10 it is useful for Ohm’s law work, and college physics labs use it in the same bridge circuits.
In a plug-type box the resistance coils are connected in series, and a tapered plug closes the gap across each coil. With a plug in place the coil is short-circuited; pulling the plug out adds that coil to the circuit, so the resistance in use is the sum of the coils whose plugs are out. Seat each plug firmly with a slight twist, because a loose or dirty plug adds contact resistance, keep the current small so the coils do not heat up, and return all plugs to the box after the practical.
What to Specify When Ordering
- Resistance value — 100, 500 or 1000 ohms, and how many of each.
- Quality grade — this superior type, or the economy plug type if you also need a 50 ohm box.
- Quantity — the minimum order is 10 units; schools usually plan one box per bench.
- Circuit items — add the meter bridge, galvanometer, plug key and connecting leads to the same enquiry so each bench is complete.
Frequently Asked Questions
What is a plug-type resistance box used for?
It supplies a known resistance in a circuit, so an unknown resistance can be found by balancing a meter bridge or Wheatstone bridge, and it sets the series or shunt resistance in potentiometer and galvanometer practicals.
Which resistance values are available?
The listing names 100 ohm, 500 ohm and 1000 ohm values in superior quality. State the value and quantity of each in your enquiry; for a 50 ohm box see the economy plug type.
How accurate are the resistors?
According to the listing, all resistors are calibrated on an imported testing bridge with an accuracy of ±0.1%. Ask JLab if your tender needs this stated on the quotation.
How does the superior type differ from the economy type?
Both are plug-type boxes with the same calibration statement. This one is listed in superior quality with 100, 500 and 1000 ohm values; the economy type is regular quality and also offers 50 ohms. The listings give no other construction differences, so ask JLab if that matters for your order.
Are the galvanometer, key and connecting leads included?
No. This listing covers the resistance box only; the galvanometer, plug key, connecting leads and meter bridge are separate items linked below.
What is the minimum order and dispatch time?
Ten units is the minimum, sold individually. Dispatch is usually within 7–10 working days after a visual inspection of every box; export transit time depends on the destination and shipping method.
What should an export enquiry include?
Send the quantity of each value, the destination country and port or city, the delivery terms you prefer (for example FOB or CIF), any packing or labelling needs, and the tender reference if there is one.
Who manufactures this resistance box?
Jain Laboratory Instruments Pvt Ltd (JLab) makes it at its own works in Ambala, Haryana, and quotes for it directly.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a manufacturer of physics lab equipment and other school and college apparatus in India, incorporated in 2017 and located on Hargolal Road, Ambala, Haryana. Its resistance boxes come from JLab’s own works rather than a trader, so schools, colleges, dealers and importers buy them factory-direct, every box is visually inspected before dispatch, and repeat orders are handled by the manufacturer itself. JLab exports worldwide and ships to buyers in every region — for example Portugal in Southern Europe, Afghanistan in South Asia, Tunisia in North Africa, Germany in Western Europe and South Korea in East Asia. Institutions buying through tenders can see the JLab lab tenders page.
Bridge and Circuit Items
- Meter Bridge and Pencil Jockey — a four-gap bridge with a constantan wire along a wooden metre scale, the circuit this box is most often used in.
- Galvanometer — the null detector for bridge and potentiometer practicals.
- Plug Key — makes and breaks the circuit with a tapered plug in brass blocks.
- Connecting Leads — plastic-covered leads with connectors for wiring the circuit.
- Resistance Box Plug Type (Economy Type) — the regular-quality plug box, including a 50 ohm value.
See more apparatus 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 resistance values and quantity you need (minimum 10 units), any bridge or circuit items to add, and your delivery location through the contact page.
Last updated: 4 October 2026
