True to the slogan "Precision in Measurement", we develop and manufacture high-quality precision measurement systems, laser interferometric measurement measuring devices and stabilized HeNe lasers for use in science and industry.

We are absolute specialists in the field of high-precision measurement of length, angle, vibration, straightness, temperature, force and other measurands.

Our products are always used when precise measurement results of highest resolution and low measurement uncertainty are required.

SIOS is one of the most important European suppliers of stabilized HeNe lasers as metrological light sources with highly stable wavelengths.