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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 measuring length, angle, vibration, straightness, mass, force and other metrics at highe resolutions with low measurement uncertainty since 1991.

SIOS is not only one of the leading manufacturers of laser interferometric measurement systems but also one of the most important European suppliers of stabilized He-Ne lasers as metrological light sources with highly stable wavelengths. With the Nanopositioning and Nanomeasuring Machine NMM-1 we also supply the world's most accurate positioning system and are 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, for example 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 our focus was primarily on the requirements of scientific institutions and testing institutes. In more recent years both areas science and industry have become equally important to our company.

Scientific Competence

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

Industrial Performance

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

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

Another significant competitive advantage lies in the flexible corporate structure and high vertical integration of the manufacturing process. Every important production process from mechanical manufacturing to optics and electronics are carried out in-house.
The company's success is based on our 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.

With that, more than ever, SIOS stands for precision and the 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 colleagues from the Technical University of Ilmenau.

Our company goal is to develop the potential of laser interferometry for practical applications at the highest metrological level 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, academic and industrial 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, partners, customers and suppliers.

Together, upcoming problems can be solved, and the things of this world too small to be seen with the naked eye can be measured ever more accurately and precisely, right down to the subnanometer range."

Dr. Denis Dontsov

Dr. Denis Dontsov

Managing Director of SIOS Meßtechnik GmbH

 +49 (0) 3677 64 47-0


Hidden Champion
SIOS is one of the Thuringia world market and technology leaders

As an internationally active developer and manufacturer of laser interferometric measurement systems, He-Ne lasers and the nanopositioning and nanometrology machine, we are one of the innovation leaders in the Free State of Thuringia.

More information about the Hidden Champion.