Precise Sound Level Meter

Precise Sound Level Meter Market Outlook

The global sound level meter market is projected to reach USD 1.5 billion by 2035, with a compound annual growth rate (CAGR) of 6.2% during the forecast period of 2025 to 2035. This growth can be attributed to increased awareness regarding noise pollution and its adverse impacts on health, particularly in urban areas. Furthermore, regulatory bodies are implementing stringent guidelines and standards for noise control across various industries, leading to the increased adoption of sound level meters. The surge in infrastructure projects, coupled with the expansion of the entertainment and automotive sectors, has also contributed to the growing demand for sound measurement solutions. Moreover, technological advancements in sensor technology and the integration of smart features in sound level meters are expected to create significant growth opportunities in the market.

Growth Factor of the Market

One of the primary growth factors for the precise sound level meter market is the rising public awareness and governmental regulations focused on noise pollution control. Legislations are becoming increasingly stringent as cities and industries are held accountable for their noise emissions, which drives the demand for accurate measurement devices. Additionally, the growing construction and urban development sectors are creating a steady need for sound level meters to monitor compliance with environmental noise regulations. The expansion of the entertainment industry, including concerts and events, further bolsters the demand for these devices, as sound levels must be constantly monitored to ensure safety and comfort. Technological advancements, such as the integration of IoT capabilities in sound level meters, allow for real-time monitoring and data analysis, appealing to a broader range of users. This technological evolution encourages both existing players and new entrants to innovate and cater to evolving market demands.

Key Highlights of the Market

• The global sound level meter market is expected to witness a CAGR of 6.2% between 2025 and 2035.
• Handheld sound level meters dominate the market due to their portability and ease of use.
• Noise monitoring applications are leading the segment due to increasing environmental concerns.
• Online retailers are becoming the preferred distribution channel for consumers seeking sound level meters.
• The Asia Pacific region is projected to experience the highest growth rate due to rapid industrialization.

By Product Type

Handheld Sound Level Meters:

Handheld sound level meters are among the most popular devices in the market due to their compact design and portability. These devices are widely used by professionals and hobbyists alike for various applications, including construction site monitoring, environmental assessments, and personal audio assessment. The ease of carrying these meters makes them ideal for fieldwork, allowing users to take precise measurements directly at the source of noise. Furthermore, recent innovations have equipped these meters with advanced features such as data logging, Bluetooth connectivity, and smartphone application integration, enhancing their functionality and user experience.

Portable Sound Level Meters:

Portable sound level meters are designed for users who require more advanced features without sacrificing mobility. These devices often come equipped with multiple sensors and extended measurement ranges, making them suitable for a variety of applications, such as industrial noise assessment and environmental monitoring. The ability to operate on battery power enhances their utility, allowing for extended use in remote locations. Additionally, these meters often feature user-friendly interfaces and data analysis capabilities, making them appealing to professionals in academia, environmental science, and occupational health.

Desktop Sound Level Meters:

Desktop sound level meters are primarily used in laboratory settings or fixed installations of monitoring systems. These devices provide high accuracy and extensive features, making them ideal for detailed sound analysis and research applications. They are typically employed in acoustics laboratories, manufacturing facilities, and for compliance testing during product development. With advanced capabilities, such as spectral analysis and real-time data processing, desktop sound level meters are essential tools for engineers and researchers who need precise noise measurements in controlled environments.

Wireless Sound Level Meters:

Wireless sound level meters leverage modern technology to provide enhanced usability and convenience. By utilizing wireless connectivity, these devices enable data transmission to remote monitoring systems, eliminating the need for physical presence at the measurement site. This is particularly beneficial in hazardous environments or large industrial sites, where real-time monitoring is crucial. Wireless meters often come with mobile applications that allow users to view, record, and analyze data on-the-go, making them a popular choice among noise consultants and environmental researchers.

Smart Sound Level Meters:

Smart sound level meters represent the latest innovation in the market, integrating advanced technology with user-friendly interfaces. These devices are equipped with IoT capabilities, allowing them to connect to the internet for data sharing and remote monitoring. Smart sound level meters can collect and analyze data over time, providing users with valuable insights about noise pollution patterns. They are particularly appealing to municipalities and organizations focused on sustainable development, as they aid in strategic planning and compliance monitoring related to noise regulations.

By Application

Noise Monitoring:

Noise monitoring is one of the most significant applications of sound level meters, driven by the need for compliance with environmental regulations and community standards. With rising concerns regarding the impact of noise pollution on health and well-being, businesses and municipalities are employing sound level meters to assess and manage noise levels in urban and rural environments. Continuous noise monitoring is essential for industries such as construction, transportation, and entertainment, ensuring that operations remain within permissible limits. The data gathered from monitoring can be used to guide policy decisions and community outreach initiatives aimed at raising awareness about noise control.

Environmental Noise Analysis:

Environmental noise analysis is critical for understanding the impact of noise pollution on ecosystems and human populations. Sound level meters are utilized in studies assessing the effects of noise on wildlife, urban noise mapping, and the evaluation of soundscapes in natural areas. These analyses help inform urban planning, zoning regulations, and conservation efforts. As cities grow and expand, the need for systematic noise assessments becomes paramount to maintain quality of life and environmental health. The data generated from environmental noise analysis also aids in developing strategies to mitigate noise pollution through effective urban design and infrastructure planning.

Industrial Noise Assessment:

Industrial noise assessment is a vital application of sound level meters, particularly in manufacturing and production environments. These devices help businesses comply with occupational health and safety regulations by monitoring noise exposure levels among workers. Prolonged exposure to high noise levels can lead to hearing loss and other health issues, making it essential for industries to conduct regular assessments. Sound level meters provide critical data for identifying noise sources, evaluating control measures, and implementing interventions to reduce noise levels, thereby fostering a safer work environment.

Entertainment Noise Measurement:

In the entertainment industry, sound level meters are indispensable for managing noise levels in venues such as concert halls, theaters, and outdoor events. Accurate sound measurement is crucial to ensure compliance with local noise ordinances and maintain a pleasant experience for audiences. By utilizing sound level meters, organizers can monitor sound levels in real-time, adjusting accordingly to prevent excessive noise that may disturb nearby residents. This application not only preserves community relations but also enhances the safety of performers and attendees during events.

Vehicle Noise Testing:

Vehicle noise testing is an emerging application for sound level meters, particularly important for automotive manufacturers and transportation authorities. As environmental regulations regarding vehicle noise emissions become stricter, manufacturers must conduct thorough testing to ensure compliance. Sound level meters are used to measure noise levels under different operating conditions, providing valuable data for research and development purposes. This application not only aids in regulatory compliance but also contributes to advancements in vehicle design, improving overall acoustic performance and consumer satisfaction.

By Distribution Channel

Online Retailers:

Online retailers have become a dominant distribution channel for sound level meters due to the convenience and accessibility they offer to consumers. With the rise of e-commerce, customers can easily compare different brands and models, read reviews, and make informed purchasing decisions from the comfort of their homes. Online platforms often provide a wider variety of products, including specialized models that may not be available in physical stores. Additionally, the integration of advanced search and filter options allows users to find the sound level meter that best meets their specific needs, contributing to the overall growth of the market.

Specialty Stores:

Specialty stores play a crucial role in the distribution of sound level meters, offering expert advice and personalized service to customers. These stores often cater to professionals and industries that require precise measurement tools, such as acoustics consultants, environmental agencies, and construction companies. The knowledgeable staff in specialty stores can provide guidance on selecting the right sound level meter for specific applications, enhancing customer satisfaction. Furthermore, these stores often carry high-quality and advanced models that may not be found in larger retail chains, appealing to discerning customers who prioritize performance and reliability.

Direct Sales:

Direct sales channels have gained traction in the sound level meter market, particularly among manufacturers who want to establish a closer relationship with their customers. By selling directly to end-users, manufacturers can provide tailored solutions, detailed product information, and after-sales support, enhancing customer loyalty. This approach is particularly valuable in industries where professional-grade equipment is required, as it allows for personalized consultations and demonstrations. Direct sales also facilitate better understanding of customer needs, enabling manufacturers to innovate and refine their product offerings accordingly.

Wholesalers:

Wholesalers serve as an essential distribution channel for sound level meters, acting as intermediaries between manufacturers and retailers. By purchasing in bulk, wholesalers can offer competitive pricing, making sound level meters more accessible to a broader customer base. This channel is particularly beneficial for smaller retailers that may not have the capital to purchase inventory directly from manufacturers. Wholesalers also play a crucial role in ensuring product availability, facilitating a steady supply chain that supports market growth. As demand for sound level meters continues to rise, wholesalers will remain a vital component of the distribution ecosystem.

Rental Services:

Rental services are an increasingly popular distribution channel for sound level meters, particularly for customers who require these devices for short-term projects or occasional use. This channel is especially appealing to industries such as construction and event management, where sound level meters are needed for specific tasks or compliance checks without the need for a long-term investment. Rental services allow customers to access high-quality equipment at a fraction of the cost of purchasing, making it an economically viable option. This flexibility not only lowers the barrier to entry for new users but also promotes the adoption of sound measurement technology across diverse sectors.

By Sensor Type

Condenser Microphone:

Condenser microphones are widely used in sound level meters due to their sensitivity and wide frequency response. They are particularly effective in capturing subtle sound variations, making them ideal for applications that require precise measurements. Condenser microphones are favored in laboratory settings and environmental monitoring, as they can provide highly accurate and reliable data. Their ability to operate over a broad frequency range enables users to assess various sound types, from low-frequency rumblings to high-frequency noises, ensuring comprehensive sound analysis.

Electret Microphone:

Electret microphones are popular in the sound level meter market due to their compact size and cost-effectiveness. These microphones are designed with a built-in electret material that eliminates the need for external polarization voltage. As a result, they are lightweight and easy to integrate into portable sound level meters. Electret microphones offer a reasonable balance between performance and affordability, making them suitable for both professional and consumer-grade devices. Their reliability and good sound quality have led to widespread adoption in applications such as noise monitoring and personal audio assessment.

MEMS Microphone:

MEMS (Micro-Electro-Mechanical Systems) microphones are an innovative sensor type increasingly used in modern sound level meters. These microphones are known for their small size, high sensitivity, and durability, making them particularly suited for compact devices. MEMS microphones can deliver excellent sound quality while being resistant to environmental factors such as temperature and humidity. Their capability for miniaturization allows manufacturers to create more portable sound level meters with advanced features, appealing to a tech-savvy audience. As the demand for smart sound level meters grows, MEMS technology is expected to play a critical role in shaping the future of the market.

Piezoelectric Microphone:

Piezoelectric microphones are distinct in their operating principle, relying on piezoelectric materials to generate electrical signals in response to sound vibrations. These microphones are particularly effective in measuring high sound pressure levels, making them ideal for industrial applications where noise levels can be extreme. Piezoelectric microphones are durable and can withstand harsh environments, which is essential for long-term field deployments. Their robustness and accuracy position them as a valuable component in sound level meters used for industrial noise assessment and environmental monitoring.

Carbon Microphone:

Carbon microphones are one of the oldest types of microphones and, although less common in modern sound level meters, they still find niche applications in specific scenarios. These microphones work by changing the resistance of carbon particles in response to sound waves, creating an electrical signal. While they may not offer the same level of precision as newer microphone technologies, they are cost-effective and relatively easy to manufacture. They can still be utilized in basic sound level meters for educational purposes or in low-budget settings where high fidelity is not a primary concern.

By Region

The sound level meter market is witnessing significant growth across various regions, driven by increasing awareness of noise pollution and the need for compliance with environmental regulations. North America holds a significant share of the market, accounting for approximately 35% of global revenues in 2025. The region's robust industrial base, coupled with stringent occupational health regulations, is fueling demand for sound measurement devices. Furthermore, advancements in technology and the proliferation of smart sound level meters are enhancing the growth potential in this region, with a projected CAGR of 6.8% between 2025 and 2035.

Europe is another key market for sound level meters, driven by similar regulatory frameworks aimed at noise control and environmental protection. The European market accounted for around 30% of the global revenue in 2025, with countries like Germany, the UK, and France leading the way in adopting advanced sound level measurement technologies. The growing focus on sustainable urban development and environmental monitoring initiatives is expected to bolster the demand for sound level meters in the region. Meanwhile, the Asia Pacific region is anticipated to exhibit the highest growth rate during the forecast period, as rapid industrialization and urbanization create a pressing need for effective noise management solutions.

Opportunities

The sound level meter market presents numerous opportunities for growth and innovation, particularly as technology continues to advance. One significant opportunity lies in the integration of IoT capabilities into sound level meters, enabling real-time monitoring and data analytics. This technological evolution allows users to collect and analyze noise data remotely, providing valuable insights for various applications, from urban planning to industrial noise control. The growing trend towards smart cities and sustainable development initiatives further enhances the appeal of IoT-enabled sound level meters, as municipalities seek effective solutions for managing noise pollution and improving quality of life for residents. Furthermore, as regulatory bodies impose stricter noise control measures, the demand for reliable sound measurement devices will continue to rise, creating a lucrative market for manufacturers and service providers.

Another area of opportunity is the increasing focus on health and safety in workplaces, particularly in industries prone to high noise levels. As organizations prioritize employee well-being and comply with occupational health regulations, the demand for sound level meters to assess and mitigate noise exposure will grow. Additionally, the expansion of the entertainment and automotive sectors opens new avenues for sound level meter applications, as noise management becomes a critical aspect of event planning and vehicle design. Manufacturers have the potential to develop specialized sound level meters tailored to these industries, incorporating advanced features and capabilities that meet the specific needs of diverse end-users. Overall, the evolving landscape of noise regulation and technological innovation presents a wealth of opportunities for stakeholders in the sound level meter market.

Threats

Despite the promising growth outlook for the sound level meter market, several threats could hinder its progress. One significant challenge is the increasing competition among manufacturers, which can lead to pricing pressure and reduced profit margins. As new entrants join the market and established companies expand their product lines, creating differentiation becomes crucial. Companies may need to invest heavily in research and development to innovate and provide unique features that attract customers, which can strain financial resources. Additionally, the rapid pace of technological advancement means that products can quickly become outdated, necessitating continuous investment in new technologies to remain competitive.

Furthermore, economic uncertainties and fluctuations in global markets may pose risks to the sound level meter industry. Economic downturns can impact funding for infrastructure projects, environmental initiatives, and other sectors that rely on sound level measurement technology. Such changes can lead to decreased demand for sound level meters, particularly in regions heavily dependent on specific industries. Additionally, variations in regulatory standards across different regions may create challenges for manufacturers seeking to navigate compliance requirements, particularly when operating in international markets. Addressing these threats will require strategic planning, adaptability, and a strong focus on innovation to ensure sustained growth in the sound level meter market.

Competitor Outlook

• Bruel & Kjaer
• Rion Co., Ltd.
• Extech Instruments
• Yokogawa Electric Corporation
• Cirrus Research plc
• Acoem Group
• Testo SE & Co. KGaA
• Sonitus Systems
• Svantek
• Ono Sokki Co., Ltd.
• 3M Company
• NTi Audio AG
• Cooper Instruments
• Kimo Instruments
• Pasco Scientific

The competitive landscape of the sound level meter market is characterized by a diverse range of players, including well-established manufacturers and emerging startups. Key companies such as Bruel & Kjaer and Rion Co., Ltd. have built strong reputations for delivering high-quality and precise measurement devices, catering to both industrial and environmental applications. These companies often invest significantly in research and development to introduce innovative products that meet the evolving needs of users. Furthermore, strategic partnerships and collaborations are common among major players, enabling them to expand their market reach and enhance their product offerings.

Emerging companies like Sonitus Systems and NTi Audio AG are also making their mark in the sound level meter market by focusing on niche applications and developing specialized products that appeal to specific customer segments. Their ability to provide tailored solutions and exceptional customer service has helped them gain traction in a competitive environment. Additionally, the rise of e-commerce has enabled smaller manufacturers to reach a broader audience, leveraging online platforms to distribute their products effectively. As the market continues to evolve, collaboration between established players and innovative startups will likely lead to new opportunities for growth and development within the sound level meter industry.

In conclusion, the sound level meter market presents a dynamic landscape of competition, with established companies and emerging players vying for market share. Key players like Yokogawa Electric Corporation and Extech Instruments are well-positioned to leverage their technological advancements and strong distribution networks to capture a larger portion of the market. Meanwhile, companies like 3M and Cirrus Research plc are focusing on expanding their product portfolios to include IoT-enabled devices and smart solutions, catering to the growing demand for real-time monitoring and data analytics. As industry trends shift towards increased regulatory scrutiny and technological innovation, the competitive landscape will continue to evolve, presenting both challenges and opportunities for stakeholders in the sound level meter market.

• 1 Appendix

  • 1.1 List of Tables
  • 1.2 List of Figures

• 2 Introduction

  • 2.1 Market Definition
  • 2.2 Scope of the Report
  • 2.3 Study Assumptions
  • 2.4 Base Currency & Forecast Periods

• 3 Market Dynamics

  • 3.1 Market Growth Factors
  • 3.2 Economic & Global Events
  • 3.3 Innovation Trends
  • 3.4 Supply Chain Analysis

• 4 Consumer Behavior

  • 4.1 Market Trends
  • 4.2 Pricing Analysis
  • 4.3 Buyer Insights

• 5 Key Player Profiles

  • 5.1 Svantek
    • 5.1.1 Business Overview
    • 5.1.2 Products & Services
    • 5.1.3 Financials
    • 5.1.4 Recent Developments
    • 5.1.5 SWOT Analysis
  • 5.2 3M Company
    • 5.2.1 Business Overview
    • 5.2.2 Products & Services
    • 5.2.3 Financials
    • 5.2.4 Recent Developments
    • 5.2.5 SWOT Analysis
  • 5.3 Acoem Group
    • 5.3.1 Business Overview
    • 5.3.2 Products & Services
    • 5.3.3 Financials
    • 5.3.4 Recent Developments
    • 5.3.5 SWOT Analysis
  • 5.4 NTi Audio AG
    • 5.4.1 Business Overview
    • 5.4.2 Products & Services
    • 5.4.3 Financials
    • 5.4.4 Recent Developments
    • 5.4.5 SWOT Analysis
  • 5.5 Bruel & Kjaer
    • 5.5.1 Business Overview
    • 5.5.2 Products & Services
    • 5.5.3 Financials
    • 5.5.4 Recent Developments
    • 5.5.5 SWOT Analysis
  • 5.6 Rion Co., Ltd.
    • 5.6.1 Business Overview
    • 5.6.2 Products & Services
    • 5.6.3 Financials
    • 5.6.4 Recent Developments
    • 5.6.5 SWOT Analysis
  • 5.7 Sonitus Systems
    • 5.7.1 Business Overview
    • 5.7.2 Products & Services
    • 5.7.3 Financials
    • 5.7.4 Recent Developments
    • 5.7.5 SWOT Analysis
  • 5.8 Kimo Instruments
    • 5.8.1 Business Overview
    • 5.8.2 Products & Services
    • 5.8.3 Financials
    • 5.8.4 Recent Developments
    • 5.8.5 SWOT Analysis
  • 5.9 Pasco Scientific
    • 5.9.1 Business Overview
    • 5.9.2 Products & Services
    • 5.9.3 Financials
    • 5.9.4 Recent Developments
    • 5.9.5 SWOT Analysis
  • 5.10 Cooper Instruments
    • 5.10.1 Business Overview
    • 5.10.2 Products & Services
    • 5.10.3 Financials
    • 5.10.4 Recent Developments
    • 5.10.5 SWOT Analysis
  • 5.11 Extech Instruments
    • 5.11.1 Business Overview
    • 5.11.2 Products & Services
    • 5.11.3 Financials
    • 5.11.4 Recent Developments
    • 5.11.5 SWOT Analysis
  • 5.12 Cirrus Research plc
    • 5.12.1 Business Overview
    • 5.12.2 Products & Services
    • 5.12.3 Financials
    • 5.12.4 Recent Developments
    • 5.12.5 SWOT Analysis
  • 5.13 Ono Sokki Co., Ltd.
    • 5.13.1 Business Overview
    • 5.13.2 Products & Services
    • 5.13.3 Financials
    • 5.13.4 Recent Developments
    • 5.13.5 SWOT Analysis
  • 5.14 Testo SE & Co. KGaA
    • 5.14.1 Business Overview
    • 5.14.2 Products & Services
    • 5.14.3 Financials
    • 5.14.4 Recent Developments
    • 5.14.5 SWOT Analysis
  • 5.15 Yokogawa Electric Corporation
    • 5.15.1 Business Overview
    • 5.15.2 Products & Services
    • 5.15.3 Financials
    • 5.15.4 Recent Developments
    • 5.15.5 SWOT Analysis

• 6 Market Segmentation

  • 6.1 Precise Sound Level Meter Market, By Application
    • 6.1.1 Noise Monitoring
    • 6.1.2 Environmental Noise Analysis
    • 6.1.3 Industrial Noise Assessment
    • 6.1.4 Entertainment Noise Measurement
    • 6.1.5 Vehicle Noise Testing
  • 6.2 Precise Sound Level Meter Market, By Sensor Type
    • 6.2.1 Condenser Microphone
    • 6.2.2 Electret Microphone
    • 6.2.3 MEMS Microphone
    • 6.2.4 Piezoelectric Microphone
    • 6.2.5 Carbon Microphone
  • 6.3 Precise Sound Level Meter Market, By Product Type
    • 6.3.1 Handheld Sound Level Meters
    • 6.3.2 Portable Sound Level Meters
    • 6.3.3 Desktop Sound Level Meters
    • 6.3.4 Wireless Sound Level Meters
    • 6.3.5 Smart Sound Level Meters
  • 6.4 Precise Sound Level Meter Market, By Distribution Channel
    • 6.4.1 Online Retailers
    • 6.4.2 Specialty Stores
    • 6.4.3 Direct Sales
    • 6.4.4 Wholesalers
    • 6.4.5 Rental Services

• 7 Competitive Analysis

  • 7.1 Key Player Comparison
  • 7.2 Market Share Analysis
  • 7.3 Investment Trends
  • 7.4 SWOT Analysis

• 8 Research Methodology

  • 8.1 Analysis Design
  • 8.2 Research Phases
  • 8.3 Study Timeline

• 9 Future Market Outlook

  • 9.1 Growth Forecast
  • 9.2 Market Evolution

• 10 Geographical Overview

  • 10.1 Europe - Market Analysis
    • 10.1.1 By Country
      • 10.1.1.1 UK
      • 10.1.1.2 France
      • 10.1.1.3 Germany
      • 10.1.1.4 Spain
      • 10.1.1.5 Italy
  • 10.2 Asia Pacific - Market Analysis
    • 10.2.1 By Country
      • 10.2.1.1 India
      • 10.2.1.2 China
      • 10.2.1.3 Japan
      • 10.2.1.4 South Korea
  • 10.3 Latin America - Market Analysis
    • 10.3.1 By Country
      • 10.3.1.1 Brazil
      • 10.3.1.2 Argentina
      • 10.3.1.3 Mexico
  • 10.4 North America - Market Analysis
    • 10.4.1 By Country
      • 10.4.1.1 USA
      • 10.4.1.2 Canada
  • 10.5 Middle East & Africa - Market Analysis
    • 10.5.1 By Country
      • 10.5.1.1 Middle East
      • 10.5.1.2 Africa
  • 10.6 Precise Sound Level Meter Market by Region

• 11 Global Economic Factors

  • 11.1 Inflation Impact
  • 11.2 Trade Policies

• 12 Technology & Innovation

  • 12.1 Emerging Technologies
  • 12.2 AI & Digital Trends
  • 12.3 Patent Research

• 13 Investment & Market Growth

  • 13.1 Funding Trends
  • 13.2 Future Market Projections

• 14 Market Overview & Key Insights

  • 14.1 Executive Summary
  • 14.2 Key Trends
  • 14.3 Market Challenges
  • 14.4 Regulatory Landscape

Segments Analyzed in the Report

The global Precise Sound Level Meter market is categorized based on

By Product Type

• Handheld Sound Level Meters
• Portable Sound Level Meters
• Desktop Sound Level Meters
• Wireless Sound Level Meters
• Smart Sound Level Meters

By Application

• Noise Monitoring
• Environmental Noise Analysis
• Industrial Noise Assessment
• Entertainment Noise Measurement
• Vehicle Noise Testing

By Distribution Channel

• Online Retailers
• Specialty Stores
• Direct Sales
• Wholesalers
• Rental Services

By Sensor Type

• Condenser Microphone
• Electret Microphone
• MEMS Microphone
• Piezoelectric Microphone
• Carbon Microphone

By Region

• North America
• Europe
• Asia Pacific
• Latin America
• Middle East & Africa

Key Players

• Bruel & Kjaer
• Rion Co., Ltd.
• Extech Instruments
• Yokogawa Electric Corporation
• Cirrus Research plc
• Acoem Group
• Testo SE & Co. KGaA
• Sonitus Systems
• Svantek
• Ono Sokki Co., Ltd.
• 3M Company
• NTi Audio AG
• Cooper Instruments
• Kimo Instruments
• Pasco Scientific