Resistance Boxes Manufacturer,Supplier and Exporter in India
Product Code : EL-DB-1244
Jlab Export is a leading Resistance Boxes Manufacturer,and suppliers in India
Resistance Boxes (code EL-DB-1244) are dial-type resistance boxes that give a known resistance by turning one to five decade dials, for meter bridge, potentiometer, galvanometer and Ohm’s law experiments in school and college physics labs. Models run from a single dial in 0.01 Ω steps up to a five-dial box with decades from 1 Ω to 10,000 Ω. They are made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Dial-type resistance box with decade dials |
| Single-dial models | 0.01–0.1 Ω in 0.01 Ω steps; 0.1–1 Ω in 0.1 Ω steps; 1–10 Ω in 1 Ω steps; 10–100 Ω in 10 Ω steps; 100–1000 Ω in 100 Ω steps |
| Double-dial models | Hundredths and tenths (10 x 0.01 Ω and 10 x 0.1 Ω); tenths and units (10 x 0.1 Ω and 10 x 1 Ω); units and tens (10 x 1 Ω and 10 x 10 Ω); tens and hundreds (10 x 10 Ω and 10 x 100 Ω) |
| Three-dial models | 0.1, 1 and 10 Ω decades; 1, 10 and 100 Ω decades; a model with 0.01 and 0.1 Ω decades is also listed (third decade not stated) |
| Four-dial models | 0.1, 1, 10 and 100 Ω decades; 1, 10, 100 and 1000 Ω decades |
| Five-dial models | 0.1, 1, 10, 100 and 1000 Ω decades; 1, 10, 100, 1000 and 10,000 Ω decades |
| 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-DB-1244 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Do They Compare with Other JLab Resistance Boxes?
| Model | How the value is set | Listed values | Other listed details |
|---|---|---|---|
| These resistance boxes (EL-DB-1244) | One to five decade dials | Decades from 0.01 Ω to 10,000 Ω | Choice of single-, double-, three-, four- and five-dial models |
| Decade Resistance Box | Band switch with very low contact resistance | One to four dials; ranges listed from 1 Ω to 10,000 Ω | Bakelite panel in a wooden case; fixed resistance box in a Bakelite box also listed |
| Resistance Coil | Fixed single value | Any one value from 0.1 Ω to 500 Ω | Non-inductive constantan coil in a hexagonal moulded case; accurate within ±0.5% |
Choose these dial boxes when you want a particular set of decades — for example the fractional-ohm dials for shunt work or the five-dial box for a wide range. The Decade Resistance Box suits buyers who prefer a band-switch box in a wooden case, and a Resistance Coil is the simpler choice when each bench only needs one known resistor.
What Are Resistance Boxes Used For?
A resistance box puts a known, adjustable resistance into a circuit. In class 12 physics practicals it is the known resistance in the meter bridge experiment, the resistance connected across the cell when finding its internal resistance with a potentiometer, and the variable resistance in the half-deflection method for a galvanometer’s resistance and figure of merit. Low-value decades of 0.1 Ω and 0.01 Ω suit the small shunt needed to convert a galvanometer into an ammeter, while the 1000 Ω and 10,000 Ω decades provide the large series resistance for converting it into a voltmeter. College and polytechnic labs use the same boxes for Wheatstone bridge, Carey Foster bridge and Ohm’s law work.
Set each dial firmly into position before switching on, read the total as the sum of all dial settings, and keep the current low and the circuit switched on only while readings are taken, since heating changes the resistance of the coils. Keep the box dry and dust-free and the terminals tight.
What to Specify When Ordering
- Number of dials and decades — pick the configuration from the table above, such as a four-dial box with 1, 10, 100 and 1000 Ω decades.
- Accuracy and terminals — if your syllabus or tender sets a tolerance or terminal type, state it so JLab can confirm it.
- Mix of models — many labs combine a low-ohm box for shunts with a high-ohm box for voltmeter conversion.
- Quantity — the minimum order is 10 units; plan one box per student group plus spares.
Frequently Asked Questions
Which resistance values are available?
Single-dial boxes cover one decade each, from 0.01–0.1 Ω up to 100–1000 Ω. Double-, three-, four- and five-dial boxes combine decades, the widest having 1, 10, 100, 1000 and 10,000 Ω dials.
How many dials do I need?
One dial gives one decade of values; each extra dial adds another decade, so you can set finer or larger values. A four- or five-dial box covers most meter bridge and galvanometer experiments with one unit.
What accuracy do these boxes have?
The listing does not state an accuracy, coil wire or terminal type. Tell JLab what your experiment or tender requires, and the quotation will confirm it for the model you choose.
Which box suits the galvanometer conversion experiments?
For the ammeter conversion, a box with 0.01 Ω and 0.1 Ω decades gives the small shunt resistance; for the voltmeter conversion, a box with 1000 Ω or 10,000 Ω decades gives the high series resistance.
How do these differ from the Decade Resistance Box?
Both are adjusted by dials. The Decade Resistance Box is listed with a very low contact resistance band switch on a Bakelite panel in a wooden case and one to four dials; these resistance boxes offer one to five dials, including fractional-ohm decades.
What details does an export quotation need?
The models and quantities, the destination country and port or city, preferred delivery terms such as FOB or CIF, any packing or labelling requirements, and the tender reference if there is one.
Who manufactures these resistance boxes?
JLab, the trading name of Jain Laboratory Instruments Pvt Ltd, makes them at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a physics and electrical laboratory equipment manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. These resistance boxes are built in its own works rather than bought from a trader, so schools, colleges, dealers and importers buy direct from the maker, each box is visually inspected before dispatch, and repeat orders come from the same source. The company holds GSTIN 06AADCJ9848D1ZE and the Legal Entity Identifier 549300DTGS77DGYD6N03. JLab exports worldwide and ships to buyers in every region — for instance the USA in North America, Uzbekistan in Central Asia, the UK in Western Europe, Turkey in the Middle East and Namibia in Southern Africa. Tender details are on the JLab lab tenders page.
Related Bridge and Resistance Equipment
- Decade Resistance Box — a band-switch decade box on a Bakelite panel in a wooden case.
- Resistance Coil — single fixed-value constantan coils for bridge work and series–parallel experiments.
- Standard Resistance — oil-immersed manganin standard resistors for precise comparisons.
- Resistance P.O. Box — a Post Office box for Wheatstone bridge resistance measurements.
- Meter Bridge — the constantan-wire bridge used with a resistance box to find an unknown resistance.
See the full Decade Box range or the wider Scientific Instrument range.
Request a Quote
Quotes come direct from the manufacturer. Use the Add To Cart enquiry button on this page, or send the number of dials and decades you need, the quantity (minimum 10 units), any accuracy or terminal requirement and your delivery location through the contact page.
Last updated: 8 October 2026
