TESA has been manufacturing high quality, high accuracy hand measuring tools in Switzerland since 1941 and over the years has successfully brought to the market a range of innovations, new products and leading technologies; including the IMICRO the world’s first self-centering internal micrometer, the TESAMASTER in 1951 the first micrometer with a resolution down to 1 micron, the TESATAST in 1952, and the UNIMASTER in 1957 a patented device for internal and external measurements of diameters in excess of a metre.
In 2001, TESA become part of the Swedish metrology group Hexagon Metrology,
