Resistance Box Plug Type (Economy Type) Manufacturer,Supplier and Exporter in India
Product Code : EL-SLE-4700
Jlab Export is a leading Resistance Box Plug Type (Economy Type) Manufacturer,and suppliers in India
Resistance Box Plug Type (Economy Type) (code EL-SLE-4700) is the regular-quality version of the JLab plug-type resistance box, used in physics labs to provide a known resistance when an unknown one is measured. It covers 50, 100, 500 and 1000 ohms, and its resistors are 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.
Specifications
| Parameter | Detail |
|---|---|
| Type | Plug-type resistance box, economy type (listed as regular quality) |
| Values listed | 50 ohms, 100 ohms, 500 ohms and 1000 ohms — give the value you need when you enquire |
| Calibration and accuracy | All resistors calibrated on an imported testing bridge; accuracy ±0.1% |
| Used for | Measuring unknown electrical resistance in physics lab work |
| 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-4700 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Plug-Type Resistance Boxes?
| Model | Grade | Values or range | Listed construction or accuracy |
|---|---|---|---|
| This box (EL-SLE-4700) | Economy (regular quality) | 50, 100, 500 and 1000 ohms | Calibrated on an imported testing bridge, ±0.1% |
| Resistance Box Plug Type (Superior Type) | Superior quality | 100, 500 and 1000 ohms | Same calibration statement, ±0.1% |
| Resistance Box | Deluxe quality | 1 to 1000 ohms | Brass plug type, constantan coils, brass blocks, teak wood case |
| Resistance Box 1-5000 Ohm Range | Deluxe quality | 1 to 5000 ohms | Brass plug type, constantan coils, brass blocks, teak wood case |
The economy box is the one to pick when you need the 50 ohm value or are equipping many benches for routine practicals. Choose the superior type for the same calibration in superior quality, and the deluxe brass boxes when you want a listing that names the coil wire and case, or a range up to 5000 ohms.
What Is the Economy Plug-Type Resistance Box Used For?
The box is the known resistance in electricity practicals. In the meter bridge experiment of class 12 physics, the wire or coil under test goes in one gap and the resistance box in the other; the student takes out a plug to set a value, slides the jockey to find the balance point on the galvanometer, and works out the unknown resistance from the ratio of the two balancing lengths. The same box is used to verify the laws of resistances in series and parallel, to find the internal resistance of a cell with a potentiometer, and for Ohm’s law work in class 10.
Before closing the circuit, check which plugs are out, since their coils add up to the resistance in use. Press each plug home with a gentle twist so it makes good contact, wipe plugs clean if readings drift, and keep them all in place when the box is put away.
What to Specify When Ordering
- Value — 50, 100, 500 or 1000 ohms, with the number of boxes of each.
- Grade — economy (this listing) or superior plug type.
- Quantity — 10 units minimum.
- Matching apparatus — meter bridge, pencil jockey, galvanometer or rheostat, if you want the whole set quoted together.
Frequently Asked Questions
What does “economy type” mean for this resistance box?
It is the regular-quality plug-type box. It is listed with 50, 100, 500 and 1000 ohm values and carries the same calibration statement as the superior type, which is listed in superior quality with 100, 500 and 1000 ohms.
How accurate is the economy resistance box?
Its listing states that all resistors are calibrated on an imported testing bridge with an accuracy of ±0.1%.
How is it used in the meter bridge experiment?
Connect it in one gap of the meter bridge and the unknown resistance in the other, remove a plug to choose a value, and find the balance point with the jockey and galvanometer. The unknown resistance follows from the ratio of the balancing lengths.
Which value should a school order?
That depends on the practicals and the wires or coils being measured; tell JLab which experiments the boxes are for and the quantity of each value, and the quotation will list them separately.
Does the box come with a galvanometer or jockey?
No, the listing is for the resistance box alone. The meter bridge, pencil jockey, galvanometer and rheostat are separate items shown below.
Who manufactures the economy resistance box?
JLab (Jain Laboratory Instruments Pvt Ltd) manufactures it at its own works in Ambala, Haryana, India.
OEM Manufacturer
Jain Laboratory Instruments Pvt Ltd, trading as JLab (about the company), is an Indian manufacturer of school and college science apparatus, including electricity and physics lab equipment, incorporated in 2017 and working from Hargolal Road in Ambala, Haryana. The economy resistance box is assembled in JLab’s own works and not sourced from a trader, so dealers, importers, schools and colleges deal directly with the maker; each box is visually inspected before it is packed, and repeat orders are supplied by the same works. The company holds GSTIN 06AADCJ9848D1ZE and Legal Entity Identifier 549300DTGS77DGYD6N03. JLab exports worldwide and ships to buyers in every region — Nigeria in West Africa, Paraguay in South America, Nepal in South Asia, Mexico in North America and Ireland in Western Europe are some examples. Tender buyers can refer to the lab tenders page.
Meter Bridge Set-Up
- Meter Bridge and Pencil Jockey — four-gap bridge with constantan wire on a wooden metre scale, supplied with a pencil jockey.
- Pencil Jockey — a spare sliding contact with an insulated handle.
- Galvanometer — shows the balance (null) point.
- Rheostats (Continuous Constantan Type) — a variable series resistance with bell terminals for setting the current.
- Resistance Box Plug Type (Superior Type) — the superior-quality plug box.
More items are in the School Lab Equipment category.
Request a Quote
Ask the manufacturer directly: use the Add To Cart enquiry button, or send the values and number of boxes (minimum 10 units), any meter bridge items to include, and the delivery city and country through the contact page.
Last updated: 4 October 2026
