ISG Devices is a Nashville-based holding company building a portfolio of precision measurement and sensor businesses serving industrial, energy, transportation, and infrastructure markets.
Founded in 2021 by Andrew Williams and Ravi Gopal, ISG has acquired and integrated three established product lines that engineers and operators rely on for accurate measurement of sound, vibration, power, flow, and environmental conditions. Our portfolio includes HydroLynx Systems, founded in 1998 and a leader in hydrological and meteorological monitoring for flood warning and water resources management.
We invest in proven instrumentation brands with strong technical reputations and long customer relationships, then modernize them with connected-device capabilities, better software, and expanded distribution. The result: the measurement tools our customers already trust, now ready for the next generation of industrial IoT.

What we do

- Precision measurement instruments for industrial and research applications
- Sensors and gauges for power generation, automotive, and manufacturing
- Hydrological and meteorological monitoring systems (via HydroLynx Systems)
- Sound, vibration, and noise measurement instrumentation

Headquartered in Nashville, Tennessee. Customers include government agencies, OEMs, and industrial operators across North America.
Website: isgdevices.com

ISG Devices

Org chart

Teams

Offices