Delta Ohm started about 30 years ago in Padua, Northern Italy, by Pietro Masut. The company has grown into an international player: now the Delta Ohm products are being sold in over 60 countries to professional users. Not only has Delta Ohm invested in Research and Development and Production, but also in a complete calibration facility. As one of the few manufacturers worldwide, Delta Ohm has its own accredited calibration laboratories. We are certified for Temperature, Humidity, Pressure, Velocity, Light and Sound, according to internationally traceable standards (ACCREDIA-SIT CENTRE N °. 124).