The TeleYAG-II absolute interferometer, developed within the European EMPIR research project 18SIB01 GeoMetre, has been used in several locations in Europe where high accuracy measurement of large distances is important: the world's best reference baseline for high accuracy distance measurement in Finland, at the geodetic fundamental stations of Metsähovi, Finland and Wettzell, Germany, and at a new 200 m reference baseline at Warsaw Polytechnic University.
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