About us

40 Years of Expertise: Mastering Ultrasonic Bolt Measurement 

For over four decades, our journey has been defined by an unyielding commitment to mastering ultrasonic bolt measurement. As pioneers in this field, our legacy spans across time, marked by unparalleled expertise and a relentless pursuit of precision.

The use of ultrasonic technology in bolt measurement has revolutionized industries, offering a non-destructive, fast, cost-effective and highly accurate method to measure bolt joint integrity, tension, and reliability. Our team's foundation was laid during the nascent stages of this technology, where innovation was scarce, and challenges were abundant.

The Boltcheck - Delta Sigma Instrument incorporates this development history. And has since its’ introduction in 2018 achieved widespread approval, and industry specific accreditation across all branches of industrial and research activity. The Delta Sigma Boltcheck instrument has in a short amount of time been standardized in safety critical industries as the only way to measure bolt load in situ. And secure a correct ultrasonic elongation measurement. The Delta Sigma - Bolt Check instrument is a purpose built bolt gauge (not a converted thickness gauge).

Our group consists of engineers and developers from USA and Norway with world wide experience in ultrasonics.