UTG-140 Ultrasonic Thickness Gauge: Affordable Thickness Measurement with Two Probes

Do you need to measure the thickness of a material but can’t access the other side? The UTG-140 digital ultrasonic thickness gauge is the most affordable solution in our product line. Yet it offers practical features: two measuring probes, adjustable sound velocity, and memory for 10 results. The package also includes coupling gel and a carrying case.

Single-Side Measurement

Ultrasonic measurement allows you to determine the thickness of a material without needing access to both sides of the part being measured. It is used, for example, to inspect the walls of pipes, tanks, and other components where a standard caliper or micrometer cannot be used.

To ensure accurate results, it is important to select the appropriate sound velocity, prepare the surface to be measured, and ensure good contact between the probe and the surface using coupling gel. The feasibility of measurement also depends on the properties and condition of the specific material.

Two Probes Included in the Basic Package

A key advantage of the UTG-140 model is that it comes with two probes operating at frequencies of 2.5 MHz and 5 MHz. This means users have both options available upon purchase and can select the appropriate probe based on the measurement task.

The thickness gauge offers a measurement range of 1.2 to 220 mm and a resolution of 0.1 mm. The achievable range in a specific application depends on the material, the probe used, and the measurement conditions.

Adjustable Sound Speed and Measurement History

The sound speed can be adjusted within a range of 1,000 to 9,999 m/s. This allows you to tailor the settings to the material being measured. The correct sound speed value is essential for accurate thickness measurements.

When inspecting multiple locations sequentially, you’ll appreciate the memory for 10 measurement results. The device also includes a built-in calibration block.

Practical Features at an Affordable Price

  • The package includes:
  • UTG-140 digital ultrasonic thickness gauge,
  • two probes with frequencies of 2.5 MHz and 5 MHz,
  • coupling gel,
  • carrying case,
  • instruction manual


The UTG-140 is a practical choice for customers looking for an affordable ultrasonic thickness gauge that includes useful accessories in the base price.

You can find detailed specifications and the current price on the UTG-140 ultrasonic thickness gauge product page. We’d be happy to advise you on selecting the right device for your specific application.