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This section provides an overview for wattmeters as well as their applications and principles. Also, please take a look at the list of 23 wattmeter manufacturers and their company rankings. Here are the top-ranked wattmeter companies as of March, 2026: 1.REED Instruments, 2.Navair Technolgies Inc., 3.Atico Export.
Table of Contents
Wattmeters are instruments specifically designed to measure electrical power, expressed in watts, within an electrical circuit. They play a vital role in both monitoring and managing power usage.
These devices have the capability to simultaneously measure both voltage and current. Since the power in a circuit is calculated by multiplying voltage and current, wattmeters use these measured values to accurately determine the wattage. Their applications are varied, extending from household to industrial uses. In residential settings, wattmeters are commonly used to track the amount of electrical power consumed. In industrial environments, such as power plants and factories, they are essential for monitoring power consumption, helping to control and reduce unnecessary power wastage.
*Including some distributors, etc.
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REED Instruments was established in 2004 and is headquartered in Wilmington, North Carolina, United States. The company is a manufacturer of portable precision test and measurement instruments. Its product range goes over 200 instruments and includes moisture meters, temperature meters, humidity meters, and more. REED Instruments has been developing cutting-edge test and measurement technologies, and its products are used by a wide range of customers, including industrial, commercial, and educational institutions. Along with the outstanding quality products, the company sell its products mainly through an authorized distribution network in North America.
JaincoLab, established in 1982, is a reputable manufacturer and supplier of laboratory equipment based in Ambala Cantt, India. With a strong attention on quality, JaincoLab provides a wide range of cutting-edge lab instruments and solutions. The company’s diverse product portfolio includes laboratory glassware, microscopes, educational charts, and more. JaincoLab's devotion to excellence is reflected in its products' precision and reliability, catering to the needs of educational institutions, research laboratories, and healthcare facilities.
Established in 1971, Ambala Electronic Instruments is a reputable manufacturer and supplier of precision laboratory instruments and equipment located in India. The company specializes in producing a diverse range of scientific instruments for various applications in research, education, and industry. Ambala Electronic Instruments offers a wide array of products, including laboratory ovens, incubators, shakers, and analytical balances. These instruments cater to the needs of laboratories, educational institutions, and industrial facilities, ensuring accurate and unfailing results in experiments and processes. Their devotion to quality and innovation has positioned them as an esteemed partner in the scientific community.
Zhejiang Gomelong Meter Co., Ltd. (ZGM) is a Chinese manufacturer of metering equipment established in 2004 and based in Yueqing City, Zhejiang. The company produces electronic, mechanical, and prepaid electric meter models, as well as prepaid water meters, socket meters, and digital meter displays — all of which are marketed under the brand name GOMELONG. It primarily serves residential and commercial construction contractors, water treatment facilities, and electric power plants. ZGM also offers product customization and technical support services such as troubleshooting, installation guidance, and maintenance.
KDS Instrument (Kunshan) Co., Ltd., established in May 2011, is a manufacturer and supplier specializing in power distribution panel-mounted instruments. The company’s product portfolio includes panel meters, shunts, and other related products. They also offer AC and DC voltmeters, ammeters, frequency meters, power meters, and more for power grid applications. All their products are made made to international standards with CE and ISO 9000 certification. The company offers technical support and after-sales service to their global customers across different markets including North and South America, Europe, Asia, and Africa.
Promax Test & Measurement SLU, founded in 1963 and based in Barcelona, Spain, is a manufacturer of telecommunication instrumentation and electronics equipment. The ISO 9001-certified company stocks products like digital modulators for broadcast, earth resistance meters, and optical fiber fusion splicers used to provide testing solutions for satellite, cable, and digital terrestrial television. It stocks over 200 products at its Barcelona facility, with 18 calibration centers and several service centers worldwide. It produces on-demand PCB circuit boards and electronic equipment and offers software development, training, and industrial design services.
ATICO Export is a scientific laboratory equipment supplier that was established in 1952 and is headquartered in Ambala, India. The company provides a wide range of educational, engineering, research-lab and-civil lab scientific laboratory equipment, including analytical instruments, laboratory furniture, and consumables. Its products such as alternative energy equipment, applied mechanics equipment, automatic control system, automobile and thermodynamics engineering models, autotronics system and bio-process tools are used by a number of schools, colleges, and research institutes in India. The company also provides a range of services, including installation, repair, and maintenance.
DEIF A/S, founded in 1933 and headquartered in Skive, Denmark, is a supplier of safe power control products for decentralized power generation on land and sea. The company offers products such as single genset controllers, protection relays, HMI control panels, and pitch battery chargers. The company's products are used in land power, whitepapers, webinars, wind power, and marine sectors. It has ISO 9001:2015 and ISO 14001:2015 quality management certifications and also offers training, repair, and consultancy services.
Ranking as of March 2026
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | REED Instruments |
54.5%
|
| 2 | Navair Technolgies Inc. |
9.1%
|
| 3 | Atico Export |
9.1%
|
| 4 | AMBALA ELECTRONIC INSTRUMENTS |
9.1%
|
| 5 | PROMAX Test & Measurement SLU |
9.1%
|
| 6 | Bird Technologies |
9.1%
|
Derivation Method
The ranking is calculated based on the click share within the wattmeter page as of March 2026. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
India
|
3 | 37.5% |
|
China
|
2 | 25.0% |
|
United States of America
|
1 | 12.5% |
|
Spain
|
1 | 12.5% |
|
Denmark
|
1 | 12.5% |
