Founded in 1991 and headquartered in Ilmenau, Germany, SIOS is a global leader in laser interferometry and precision metrology. The company specializes in high-resolution systems for measuring length, angle, vibration, straightness, and environmental variables—essential for calibration labs, nano-positioning, and scientific research. SIOS systems offer picometer-level resolution and are widely used in standards institutes, aerospace, semiconductor fabrication, and high-end manufacturing, where they stand out with their long term stability. With a strong OEM track record and a modular product architecture, SIOS provides tailored sensor integration and long-term product support, making them a trusted partner for system builders requiring traceable, ultra-stable, and high-precision measurement technologies.
The list of achievements at SIOS is impressive: from developing the NMM-1 Nanomeasuring Machine—recognized as the world’s most accurate positioning system—to providing the interferometric technology used in manufacturing silicon spheres for the redefinition of the kilogram. SIOS systems are trusted by top-tier research institutions including NIST and PTB. It’s no surprise that the company has repeatedly been recognized as one of Germany’s Top 100 Innovators, affirming its role as a global leader in high-precision metrology.