True to the slogan "Precision in Measurement", SIOS Messtechnik GmbH develops and manufactures laser interferometric and other precision measuring instruments for calibration and nano-measurement technology for the measurement of length, angle, vibration and straightness, mass, force and other measurands with the highest resolution and low measurement uncertainty. Thanks to the high vertical range of manufacture, SIOS Meßtechnik GmbH distinguishes itself as a globally active supplier and manufacturer of customised solutions for high-precision measuring and calibration devices for both science and industrial applications. SIOS measuring technology is used in precision metrology, metrology institutes, calibration, mechanical engineering, the optics and semiconductor industries, medical technology, nanometrology and geosciences. SIOS measuring systems are characterised by flexibility with regard to their application; in particular, the modular system of the measuring instruments enables customer-specific application solutions. SIOS Meßtechnik GmbH is one of the leading manufacturers of laser interferometric measuring systems and is the most important European supplier of stabilised He-Ne lasers as a metrological light source with a highly stable wavelength. With the NMM nanopositioning and nanometrology machine, SIOS is also the supplier of the world's most accurate positioning system and thus the sole market leader. The SIOS product portfolio: - Length measurement systems - Length and angle measurement systems - Calibration measurement systems - Nanopositioning and nanomeasuring machine - Laser vibrometer - Probes and thickness gauges - Stabilized HeNe lasers - Climate measuring station