The GHM Messtechnik Group was founded in 2009 out of the companies GREISINGER electronic, Honsberg Instruments and Martens Electronic. It is a full-range supplier for measurement and industrial electronics.

in March 2010, Imtron Messtechnik was integrated as fourth company into the GHM group, in July 2013 these companies were merged to form GHM Messtechnik. At this time was also the new sales and training center implemented at Erolzheim. As new partner for regulation equipment, company T&A Telemetrie & Automation was won in March 2014.

Since end of 2015 Delta Ohm in Padua/Italy is a member of the GHM group, which is now active at the division of environmental measurement technology, microclimate-analysis, acoustic, light metering and water-analysis.

In the present moment, the limited representator of GHM company, Vista Mehr Negar company , is present in Iran.