The first company, ISOTHERMIC SWISS, was founded in 1958 for the distribution of foreign manufactured products.

In 1970 OIL METER was founded for the manufacturing of volumetric flow meters for the chemical and petroleum industries. In 1988 the Isothermic Swiss and Oil Meter were merged to form GRUPPO ISOIL. In 1993 OIL METER SISTEMI was founded to develop software for industrial process automation. In the same year the manufacturing of Electro Magnetic Flow meters commenced. In 1998 the new production facility HEMINA was founded for the manufacturing of electro magnetic flow meters.

In 2000 the group creates two new companies: ISOIL IMPIANTI, specializing in the movement of hydrocarbons and ISOIL INDUSTRIA which continues the commercial activities of selling foreign brands of instrumentation and its line of flowmeters under the brand Isomag ^tm

In 2006 the group launched the very innovative Flowiz^tm magnetic flow meter. It is the first magnetic flow meter in the world to be powered by battery and with the ability to communicate wirelessly over the GPRS network.

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