Established in 1985, DGH is an industry-leading manufacturer of data acquisition hardware for use in the process monitoring and control marketplace. Our products have been used worldwide in such industries as water wastewater management, pharmaceutical, scientific laboratories, military, automotive, transportation, energy management, and power utilities. As part of Jewell Instruments, LLC, DGH Corporation continues to innovate with a full range of Analog Input Modules, Analog Output Modules, Digital Input/Output modules, and Application Software. Programs.