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Fast and Future Ready: New 39DL PLUS™ Ultrasonic Thickness Gauge

June 24, 2024

Fully integrated wireless capabilities streamline precision and corrosion thickness gauging

WALTHAM, Mass., (June 25, 2024) The new 39DL PLUS™ ultrasonic thickness gauge redefines efficiency and connectivity in the nondestructive testing industry with ultra-fast scanning speeds and fully integrated wireless connectivity in a rugged handheld design. Building on the proven performance and versatility of its predecessor, the 39DL PLUS gauge provides a digital inspection workflow that saves inspectors time in precision and corrosion thickness inspections.

Affordable Part Scanning

With breakthrough scanning speeds, the 39DL PLUS instrument offers an industry-leading* 60 Hz update rate for handheld thickness gauges. For inspection codes that require this fast scanning rate, the 39DL PLUS gauge is an easy-to-use and affordable alternative to a traditional flaw detector. Users can find thin spots more easily when scanning for minimal thickness areas on pipes and other assets affected by corrosion.

Digital Inspection Workflow

Integrated Wi-Fi® and Bluetooth® capabilities** facilitate a seamless inspection workflow for Industry 4.0. Users can connect to the Link Plus iOS app, Link-Wedge software or the Inspection Project Manager (IPM) app to effortlessly share results. The gauge also offers the potential for remote control and integration, enabling convenient control of the gauge from a distance in innovative applications.

World-Class Ultrasonics

Developed by industry professionals with more than 35 years of nondestructive testing experience, the 39DL PLUS gauge enhances the performance of its predecessor trusted by tens of thousands of users around the world. The new gauge features exceptional signal quality, stable waveforms and optimized algorithms in a rugged design, enabling users to achieve accurate, reproducible measurements in any environment. Each gauge is built tough to keep working despite shocks, drops and other challenges that come with inspection work.

"With the new 39DL PLUS ultrasonic thickness gauge, we've reimagined the inspection experience by placing speed and connectivity at the forefront of our design," stated Steve LaBreck, Director of Global Product Management, NDT Portable Ultrasonics at Evident. "By integrating Wi-Fi® and Bluetooth® capabilities directly into the handheld gauge, we're empowering inspectors to work smarter and faster than ever before."

To learn more about the 39DL PLUS ultrasonic thickness gauge, visit

*As of June 2024. Up to 60 Hz versus 30 Hz on the predecessor model and comparable handheld thickness gauges.
**Wi-Fi® and Bluetooth® are pending certification in some regions. Contact your local Evident representative for details on their availability.


In 2022, Olympus Corporation spun off its Scientific Solutions Division, including its life science and industrial solutions businesses, to establish a new company called Evident. Although our name is different, our expertise, manufacturing capabilities and commitment to our customers, which defined us over the past 100 years, remain unchanged.

At Evident, we are guided by the scientific spirit—innovation and exploration are at the heart of what we do. Committed to making people’s lives healthier, safer and more fulfilling, we support our customers with solutions that solve their challenges and advance their work; whether it’s researching medical breakthroughs, inspecting infrastructure, or exposing hidden toxins in consumer products.

Evident’s industrial solutions range from microscopes and videoscopes to nondestructive testing equipment and X-ray analyzers for maintenance, manufacturing and environmental applications. Backed by state-of-the-art technologies, Evident products are widely used for quality control, inspection and measurement.

In life science, Evident empowers scientists and researchers through collaboration and cutting-edge solutions. We’re dedicated to meeting the challenges and supporting the evolving needs of our customers, continuing to advance a comprehensive range of microscopes for pathology, hematology, IVF and other clinical applications as well as for research and education.

For more information, visit

Media Contact:
Hilary Banda
(781) 419-3624

39DL PLUS is a trademark of Evident Corporation or its subsidiaries.
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Evident Corporation is under license.

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