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SIOS Precision Measurement

Quality made in Germany.

True to the slogan "Precision in Measurement", SIOS has been developing and manufacturing laser interferometric and other precision measuring instruments for calibration and nano metrology for the measurement of length, angle, vibration, straightness, mass, force and other measurands with highest resolution and low measurement uncertainty since 1991.

SIOS is not only one of the leading manufacturers of laser interferometric measurement systems. SIOS is one of the most important European suppliers of stabilized He-Ne lasers as metrological light source with highly stable wavelength. With the nanopositioning and nanometrology machine NMM, we are also the supplier of the world's most accurate positioning system and thus the sole market leader.

For 30 years now, we have been offering high-quality standard sensors, customer-specific product developments as well as individual OEM solutions, e.g. for the fields of research & development, calibration, mechanical engineering, optics and semiconductor industry, medical technology, nanometrology and geoscience.

In the early years of our company's history, the focus was primarily on the requirements of scientific institutions and testing institutes. In the meantime, both areas science and industry are equally important for our company.

Scientific Competence

In the university, scientific environment, the reliability, stability and highest accuracy of SIOS interferometers are required for work on a wide range of research projects. National calibration laboratories around the world work with SIOS products to implement national calibration specifications.

Industrial Performance

In the industrial environment, the individual SIOS solutions of customer requirements are particularly appreciated. Users of our measurement technology benefit from the many years of expertise, the high flexibility, the prompt adaptation development as well as the modular design of the SIOS measurement systems.

A strong basis for the development of innovative products has always been the close scientific-technical cooperation with the Technical University of Ilmenau and the Physikalisch-Technische Bundesanstalt. Numerous awards and patents attest to our high scientific level. It is therefore not surprising that 28 percent of SIOS employees work in the development department.

Another significant competitive advantage lies in the flexible corporate structure and high vertical range of manufacture. All important production processes from mechanical manufacturing to optics and electronics are carried out within the company.
The company's success is based on a highly qualified and extremely motivated workforce.

In recent years, SIOS has recorded steady sales growth, particularly in the OEM sector. Numerous renowned companies integrate SIOS interferometers directly into their products in order to meet today's requirements and quality standards.

SIOS thus stands more than ever for precision and highest quality - Made in Germany.
This is appreciated by users of precision measurement technology all over the world. 

SIOS Facts

SIOS was founded in 1991 by Prof. Jäger and his scientific colleagues from the Technical University of Ilmenau.

Our company goal is to develop the potential of laser interferometry at the highest metrological level for practical applications and thus to make the world of metrology even more accurate and precise.

The company is located in the center of Germany with direct proximity to the Technical University and the technological environment in Ilmenau.

28 percent of SIOS employees are scientists.

We are enthusiastic about challenging projects.

Flat hierarchies and cross-departmental cooperation promote our innovative work culture.

At SIOS, all important processes are united at one location.


"Our entrepreneurial activity is focused on transferring scientific results combined with technical know-how into innovative products with the highest quality standards. Of course, without losing sight of the greatest possible benefit for our customers.

It is important to us to maintain our readiness to innovate and to meet the increasing challenges of precision measurement technology. We can only meet these demands together with our employees, our partners, customers and suppliers.

Together, upcoming tasks can be solved and the things of this world that are invisible to the eye can be measured ever more accurately and precisely, right down to the subnanometer range."

Dr. Denis Dontsov

Dr. Denis Dontsov

Managing Director der SIOS Meßtechnik

 +49 (0) 3677 64 47-0


TOP 100 innovator
SIOS is one of the most innovative companies in Germany.

For the second time, we have received the TOP 100 seal for special innovative strength and above-average innovation success. We are proud of this.

More information about the TOP innovator.