Resistance Box
Product Code : LSK-PL-10366
Resistance Box (SKU LSK-PL-10366), also called a decade resistance box, lets students dial in a known resistance in decade steps through a pair of 4 mm spin-free terminals. It suits bridge, potentiometer and meter experiments in senior secondary and college physics and in electrical labs. As a science apparatus manufacturer in India, Science Lab Supplies builds each box, in the dial count ordered, at Plot 448, HSIIDC Industrial Area, Saha, Ambala, and its factory quotes schools, colleges, tender contractors and distributors directly.
Specifications
Dial options, accuracy, power and terminals of the decade resistance box are listed one per row. In short, resistance is set in decades on the dials, boxes come with 3, 4, 5 or 6 dials, each step can dissipate 1 W, and resistors are calibrated to better than 1%, except the 0.1 steps at 5%.
| Specification | Value |
|---|---|
| SKU | LSK-PL-10366 |
| Type | Decade resistance box |
| Setting | Resistance dialled up in decades |
| Dial versions | 3, 4, 5 and 6 dial boxes, covering many ranges |
| Power per step | 1 W |
| Accuracy | Each resistor calibrated to better than 1% |
| 0.1 steps | Within 5% |
| Terminals | Pair of 4 mm spin-free terminals for low-resistance connection |
| Earth | Earth terminal fitted to the housing |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Resistance Box
A resistance box provides a known, adjustable resistance, so it serves as the standard arm of a bridge, a series resistor for a galvanometer or a variable load. That makes it a practical lab resistance box in India for NCERT Class 12 physics practicals and B.Sc. and diploma electrical measurement work.
- Class 12 physics (CBSE/NCERT): metre bridge experiment to find an unknown resistance.
- Class 12 physics: finding the resistance of a Galvanometer 30-0-30 mA by half-deflection and converting a galvanometer into a voltmeter.
- B.Sc. physics: Wheatstone bridge, Carey Foster bridge and experiments on the 100 cm Potentiometer with Jockey Pencil.
- Diploma and ITI electrical labs: verifying Ohm’s law and series and parallel combinations.
Standard Scope of Supply
The Resistance Box is supplied as a single decade box with its dials, two 4 mm spin-free terminals and an earth terminal. The number of dials and the range are confirmed on your quotation, and connecting leads can be added to the same quotation if needed.
Packing, MOQ and Lead Time
Tell us the number of dials and range you need, and whether you want one box or a set for every bench. The quotation then lists packing, delivery time and price for that quantity, with bridges or rheostats added on request.
Science Lab Supplies is registered as an exporter with an Importer-Exporter Code and is able to ship to buyers in Tanzania, Uganda, the UAE, Saudi Arabia, Oman and the Philippines. Dial count, range and quantity can be specified on the contact page or alongside other items in the enquiry cart; a physics-lab tender can be lodged through the lab tender page.
Frequently Asked Questions
Which dial configurations are available?
Boxes are made with 3, 4, 5 or 6 dials covering different ranges. State the number of dials and range you need when you ask for a quotation, and both are confirmed on it.
How accurate are the resistors?
Each resistor is calibrated to better than 1%, except the 0.1 steps, which are within 5%. Each step can dissipate 1 W of heat, which sets the safe current for a setting.
What connections does the box have?
A pair of 4 mm spin-free terminals gives a low-resistance connection to the circuit, and an earth terminal is fitted to the housing for safe bench use.
Is the Resistance Box made in-house?
Yes. Every box, from 3-dial to 6-dial, leaves the company’s own Saha, Ambala, India factory, so Science Lab Supplies quotes as the maker and not as a trading firm.
Related Resistance and Bridge Apparatus
Bridge and potentiometer experiments combine a resistance box with other resistance standards, variable components and a complete bridge. These Physics Lab and Electrical and Electronics items fill out that bench, and any of them can be quoted with the resistance box on one quotation.
- Decade Resistance Box, Dial Type — high-stability metal-film elements, for AC or DC use.
- Resistance Box Plug Type (Constantan / Manganin Coil) — coils on bakelite spools in a brass-block box.
- Resistance Substitution Box — 12 resistors selected by a rotary switch, two 4 mm yellow terminals.
- Capacitance Substitution Box — rotary selector and two 4 mm safety sockets in a 75 x 100 x 40 mm ABS case.
- Rheostat — 10 Ω high-power rheostat with 4 mm safety sockets.
- Meter Bridge or Wheatstone Bridge With Pencil Jockey — four-gap copper-strip bridge with nine brass terminals.
- Winston Bridge Kit — 0–20 V digital voltmeter, 0–10 A digital ammeter and a 10 Ω rheostat.
Browse the full Physics Lab range, the Electrical and Electronics range, or all physics lab equipment.
Last updated: 22 October 2026
