Apparatus for Resistance Measurement Manufacturer,Supplier and Exporter in India
Product Code : EL-PL-12576
Jlab Export is a leading Apparatus for Resistance Measurement Manufacturer,and suppliers in India
Apparatus for Resistance Measurement (code EL-PL-12576) is a set of six 1 m test wires for investigating how a conductor’s resistance depends on its length, cross-section and material: two constantan wires of 0.7 mm diameter, constantan wires of 1 mm, 0.5 mm and 0.35 mm, and a 0.5 mm brass wire, all connected through 4 mm sockets for extra-low voltages only. JLab manufactures the apparatus in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Model | SCK966/035 |
| Constantan wires | 2 × 0.7 mm, 1 × 1 mm, 1 × 0.5 mm, 1 × 0.35 mm diameter |
| Brass wire | 1 × 0.5 mm diameter |
| Wire length | 1 m |
| Connections | 4 mm sockets |
| Supply | Extra-low voltage only |
| Quality check | Each apparatus is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Product code | EL-PL-12576 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Three Variables from One Apparatus
Resistance follows R = ρL/A, with A = πd²/4. Join the two 0.7 mm constantan wires in series to double the length and the resistance doubles; join them in parallel to double the cross-section and it halves. Going from 0.7 mm to 0.35 mm halves the diameter and quarters the area, giving four times the resistance, and the same holds between the 1 mm and 0.5 mm wires. The 0.5 mm constantan and 0.5 mm brass wires are the same size, so comparing them isolates the material: brass has a far lower resistivity.
Taking the Readings
Pass a small current from a low-voltage supply through one wire, read the current on an ammeter and the voltage across the wire on a voltmeter, and work out R = V/I. The thicker wires have a low resistance, so this method gives better figures for them than a multimeter’s resistance range. Constantan changes its resistance very little as it warms, which keeps those readings steady; the brass wire drifts more if the current is left on.
Related Resistance Apparatus
- Constantan Wire — loose constantan wire for making up extra test lengths.
- Meter Bridge — compares an unknown resistance with a known one along a constantan wire.
- DC Power Supply — adjustable low-voltage DC with current limiting to drive the wires.
More apparatus for electricity practicals is in Physics Lab.
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Last updated: 26 October 2026
