Corrosion Thickness Gauge

Are you looking for the best place to get a corrosion thickness gauge? At Cygnus Instruments, we pride ourselves on being pioneers in developing digital multiple echo technology, which ensures accurate thickness measurements through coatings and corrosion. With over 40 years of experience, we’ve established ourselves as the go-to experts for ultrasonic thickness gauges, essential in various industrial applications worldwide.

Our corrosion thickness gauges are designed to provide reliable and precise measurements, even in the harshest environments. Whether dealing with ship hulls, subsea inspections, or asset integrity maintenance, our equipment stands out for its robustness, accuracy, and ease of use. Stay with us to explore the corrosion thickness gauge more.

What is the Corrosion Thickness Gauge?

Corrosion Thickness Gauge

A corrosion thickness gauge is a specialised ultrasonic device designed to measure the thickness of materials, particularly metals, even when coated with paint or other protective layers. This type of gauge is essential for assessing the extent of corrosion and material degradation, which is crucial for maintaining the integrity and safety of structures and equipment.

At Cygnus Instruments, our corrosion thickness gauges utilise advanced digital multiple echo technology. This innovative approach allows for accurate measurements through coatings and corrosion without removing any surface layers. This capability saves time and prevents potential damage to the protective coatings, ensuring the inspected materials’ longevity.

Our gauges have robust probes and transducers that emit ultrasonic pulses into the material. These pulses travel through the material and reflect from the internal surface. The indicator calculates the material’s thickness with high precision by measuring the time it takes for the echoes to return.

Importance of Measuring Corrosion Thickness

Measuring corrosion thickness is vital for several reasons:

  • Ensuring Safety: Regularly measuring corrosion thickness helps us identify potential weaknesses in structures and equipment, preventing accidents and failures.
  • Extending Lifespan: By detecting corrosion early, we can take preventive measures to protect and maintain materials, significantly extending their service life.
  • Cost Savings: Early corrosion detection allows us to address issues before they become severe, reducing repair and replacement costs.
  • Regulatory Compliance: Many industries have strict regulations regarding material integrity. Accurate Thickness Tester measurements ensure we comply with these standards.
  • Optimising Maintenance: Knowing the exact condition of materials helps us plan and optimise maintenance schedules, ensuring minimal downtime and maximum efficiency.
  • Environmental Protection: Preventing material failure due to corrosion helps prevent potential environmental hazards in the oil and gas industry, such as leaks and spills.

Measuring corrosion thickness is a critical practice that supports safety, efficiency, and cost-effectiveness across various industries.

Applications of Corrosion Thickness Gauges

Corrosion thickness gauges are versatile tools used in various industries to ensure the integrity and safety of structures and equipment. Here are some critical applications:

  • Marine Industry: We use corrosion thickness gauges extensively for ship hull inspections, ensuring that vessels remain seaworthy by detecting and addressing corrosion early.
  • Oil and Gas: In this sector, our gauges help monitor pipelines, storage tanks, and other critical infrastructure, preventing leaks and ensuring compliance with safety regulations.
  • Civil Engineering: From bridges to buildings, our gauges are essential for inspecting structural components and detecting corrosion that could compromise safety and stability.
  • Manufacturing: We employ these gauges to monitor the thickness of machinery and equipment, ensuring they operate efficiently and safely over time.
  • Transportation: In the automotive and aerospace industries, corrosion thickness gauges help us maintain the integrity of vehicles and aircraft, ensuring passenger safety and extending service life.
  • Power Generation: Our gauges are used in power plants to inspect boilers, pressure vessels, and other critical components, preventing failures that could lead to costly downtime and repairs.

At Cygnus Instruments, our corrosion thickness gauges are designed to meet the demanding requirements of these diverse applications.

Types of Corrosion Thickness Gauge Measurement

Understanding the different types of corrosion thickness gauges and their measurement techniques is essential for selecting the right tool for specific applications. Here are the primary types of corrosion thickness gauges:

  • Ultrasonic Corrosion Thickness Gauges

Ultrasonic corrosion thickness gauges are among the most widely used tools in the industry. These gauges emit high-frequency sound waves into the material through a probe. The sound waves travel through the material and reflect from the opposite surface. By measuring the time, it takes for the echoes to return, the gauge calculates the thickness of the material.

At Cygnus Instruments, our ultrasonic gauges utilise advanced multiple echo technology, allowing us to accurately measure through coatings and corrosion.

  • Magnetic Corrosion Thickness Gauges

Magnetic corrosion thickness gauges are designed to measure the thickness of non-magnetic coatings on ferrous substrates. These gauges generate a magnetic field and measure the magnetic flux density, which changes with the distance between the gauge’s probe and the ferrous substrate. This change is used to calculate the coating thickness.

These gauges are handy for inspecting painted or coated steel surfaces, such as pipelines, storage tanks, and structural components in the automotive and construction industries. Magnetic thickness gauges are valued for their simplicity and rapid measurement capabilities, making them a practical choice for quick inspections and quality control.

  • Mechanical Corrosion Thickness Gauges

Mechanical corrosion thickness gauges, or micrometres or callipers, provide a direct physical thickness measurement. These gauges use a mechanical probe pressed against the material’s surface to measure its thickness. While less sophisticated than ultrasonic or magnetic, mechanical gauges are highly reliable and provide accurate measurements for thin materials or small components.

These gauges are often used in applications where direct access to the material’s surface is possible, and coatings or corrosion are minimal. Industries such as manufacturing and metalworking frequently use mechanical gauges to precisely measure sheet metal, tubing, and other small components.

  • Eddy Current Thickness Gauge

Eddy current thickness gauges are designed to measure the thickness of non-conductive coatings on conductive substrates. These gauges generate an alternating magnetic field that induces eddy currents in the conductive substrate. The strength of these eddy currents varies with the distance between the probe and the substrate, allowing the gauge to calculate the coating thickness.

Eddy current gauges are particularly effective for non-ferrous metals, such as aluminium, copper, and stainless steel. They are widely used in aerospace industries where precision and non-destructive testing are critical.

Get the Best Corrosion Thickness Gauge with Cygnus

Cygnus Instruments is the industry leader in finding the most reliable and accurate corrosion thickness gauge. With over 40 years of expertise and innovation, we have developed a range of ultrasonic thickness gauges that cater to various industrial needs.

At Cygnus, we pride ourselves on our commitment to quality and customer satisfaction. Our corrosion thickness gauges are designed with advanced digital multiple echo technology, ensuring precise measurements through coatings and corrosion. This technology saves time and preserves the integrity of protective coatings, making our gauges the preferred choice for professionals across multiple industries.

Why Should You Choose Us?

When it comes to selecting a corrosion thickness gauge, Cygnus Instruments is your best choice. With over 40 years of experience, we were the original digital multiple echo technology developers, setting the benchmark for accurate thickness measurements through coatings and corrosion. Our commitment to innovation and excellence has made us industry leaders trusted by professionals worldwide.

Our gauges are renowned for their precision, ensuring you get reliable and exact measurements every time. This level of accuracy is critical for maintaining the integrity and safety of your assets. Whether you’re involved in marine, oil and gas, or civil engineering, our equipment is designed to meet your specific needs, providing you with the peace of mind that comes from knowing your measurements are correct.

Durability is another hallmark of our products. Designed to withstand the harshest environments, our gauges are built to last. We understand that our customers often operate in challenging conditions, and we ensure our equipment can handle the most difficult jobs without compromising performance.


At Cygnus Instruments, we take great pride in the positive feedback we receive from our clients. Their experiences and testimonials reflect the reliability and accuracy of our corrosion thickness gauges and our commitment to exceptional customer service. Visit our official website to check out the reviews from our customers.

Contact Us Today!

We’d love to hear from you if you want to learn more about our corrosion thickness gauges or have any questions. At Cygnus Instruments, we provide exceptional customer service and support.

Feel free to contact us on +44 (0) 1305 265 533 or Our team of experts is ready to assist you with any inquiries and help you find the perfect solution for your specific needs.