Quick Answer: Precision Resistance Coil Unit is a laboratory reference resistance with a resistance-wire element on an insulating support, used for bridge measurements, resistance comparison and checking meters.
Last updated: October 2026
Key Features
Resistance-wire element on an insulating support with accessible terminals
Serves as a known reference in Wheatstone bridge and meter bridge work
Passive: no internal power source
Supplied in a protective case
Technical Specifications
Specification
Value
Product type
Laboratory reference resistance unit
Element
Resistance wire on an insulating support
Power
Passive, no internal power source
Supplied with
Protective case
About This Product
In college and technical laboratories the unit acts as the known resistance when balancing a Wheatstone bridge, and it is also used to check ohmmeters and digital multimeters against a fixed value. For Electrical And Electronics measurement work, a low test current is used because self-heating can shift the resistance.
Frequently Asked Questions
Q1. Why should a low measurement current be used? Current causes self-heating, which can change the resistance and reduce measurement reliability. Stay within the documented current and power limits.
Q2. Can it be connected directly to mains electricity? No. The unit is meant for controlled measurement circuits only.
Lab Equipments Ambala exports to schools, colleges and distributors in countries such as Vanuatu, Qatar and Panama.
.jpg)
.jpg)
 (1).png)
.jpeg)
.jpg)
.jpg)
