DGI Metrology is the North America Calibration and Service Center for GRAS Sound and Vibration

.DGI Metrology provides factory trained and authorized calibrations of many GRAS Sound and Vibration products in the US including microphones, pistonphones, acoustic calibrators, ear and mouth simulators and more. GRAS Sound & Vibration is an Axiometrix Solutions Brand that also includes Audio Precision and IMC Test and Measurement