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Coating & Material Thickness Gauges

GAOTek’s coating thickness gauges are devices for measuring the thickness of a material and are for sale to the United States, Canada and globally. Our products utilize non-destructive testing technique since it does not permanently change the material it is testing.  They are reliable, high quality, and affordable equipment that can provide an accurate measurement, and offering an efficient and quick means of inspection or testing. It is compact, easy to carry and portable to allow the user to work in complex conditions.


The use of gauging systems are becoming more abundant in the field of automation and manufacturing industries due to modern technological advancement. The gauges are great for improving the material qualities such as strength, dimensional accuracy, flatness, surface, and formability.

The innovation in measurement technology has allowed us to contribute greatly in ensuring the compliance with industry standards. Our thickness gauges are designed and engineered for long-term use in a various application.

Thickness gauges are becoming more popular due to its ultrasonic non-destructive technique and support to replace the destructive method of measuring the thickness of a material.

The benefit of a precisely finish thickness is it ensure proper coating or material thickness is being applied in compliance with a manufacturer’s recommendations, thus it saves money when reworking on the product. Testing the thickness can reduce the number of reworks and customer returns due to finishing defects.

Today’s thickness gauges are more simplified and are more advanced and sensitive than in the past. There are various types of modern or new advancement of gauges: magnetic, ultrasonic coating thickness measurement and eddy current.

  • Magnetic gauges – widely used in applications such as nickel coatings, phosphating, paint, plastic and coatings. They allow for the quick, precise, non-destructive measurement of non-magnetic coatings applied over ferrous substrates.
  • Eddy current gauges – It is utilized as a part of conductive coatings over non-ferrous metals, for example, anodize or paint over aluminum. The technology comes with a feature of scanning option that allows operators to continuously working while also measuring. It can calculate an average measurement and give a precise reading for thickness over uneven or finished materials.
  • Ultrasonic gauge – It is designed to measure coating thickness ultrasonically which it works by utilizing a vibration that was sent into the coating by a transducer, then with the assistance of a couplet, it applied to the surface.

Nowadays many industries use an ultrasonic method in their quality programs since it is more time efficient and avoid the use of destructive tests, which would require retests or reworks to replace the destructive measurement techniques for concrete, wood, and plastics applications.


GAOTek’s coating thickness gauges comes with many beneficial features that all users to comfortable use the device. Some of these features include:

  • Reliability, accuracy, and easy to use
  • Compact and portable: which are suitable for working aloft and complex conditions
  • Low battery indication
  • Offers simplicity and ease of operation
  • Backlight LCD: reading in dim light conditions
  • Auto calibration
  • Wide range of applications with various methods of measuring the material
  • Bluetooth™ data output choice.
  • Use “USB data output” and “RS-232 data output” to connect with PC
  • Automated material code and sound velocity value, convenient to use
  • High performance and low power consumption microprocessor technology
  • Digital display: offers exact reading
  • Automatic power off: to conserve power
  • Exclusive microcomputer LSI circuit and crystal time: offering precise accuracy measurement and measuring time
  • Wide measuring range and high resolution: high power emission and broadband receiving sensitivity, the gauge can match probes of different frequencies. For easy to measure rough surface
  • Coupling status indicator showing the coupling status
  • Two work modes: Single point and Scan mode
  • Two-point calibration function

The requirements for precise thickness measurement can be applied in many industries such as oil, gas, aerospace, automotive, pharmaceutical, food processing, production, and manufacturing. Thickness gauges are generally utilized in various applications such as wood, composite, metals, fiberglass, ceramics, glass, concrete, plastics, foam products, paint, and other non-metallic material.

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