DGSI. Durham Geo Slope Indicator

About Us

Our Business

Stone Mountain, GA facility.
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Mukilteo, WA facility.

Durham Geo Slope Indicator (DGSI) is dedicated to the design, manufacture and supply of products for materials testing in the construction, geotechnical and geophysical markets. Our environmental products include ground water remediation, sampling equipment, storm water sampling equipment and a complete line of water quality meters.
Many of the products, originally under the Brainard-Kilman name, have been offered since 1965. Our manufacturing facilities in Stone Mountain, Georgia and Mukilteo, Washington, enable us to offer a wide range of products and instruments to serve the Geotechnical and Geo-environmental markets.

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DGSI received ISO 9001:2000 certification for its manufacturing facilities in Washington and Georgia. The scope of certification includes the design, manufacture, distribution, calibration, and repair of geotechnical equipment for the construction, geotechnical and geo-environmental markets.

In September of 2009, Durham Geo Slope Indicator was acquired by Nova Metrix Corporation. Nova Metrix is a newly founded company serving the measurement and control instrumentation markets. For more information about Nova Metrix's parent company, Nova Ventures Corporation, please visit www.novavg.com.

Our Customers

DGSI's customers are represented by each state in the USA and more than 50 countries. They include consulting engineers and scientists, universities, government entities, research laboratories and civil and environmental construction companies.


If you’re considering a career with DGSI, then you’re already on the right path. See job openings >>

Our Products

Materials Testing Equipment


Soils testing equipment and supplies

Geosynthetics testing equipment

Concrete testing equipment

Asphalt testing equipment


Water Quality Products


Automatic storm water samplers

Ground water sampling pumps

Ground water remediation pumps

Well development pumps


Geotechnical & Structural Sensors


Inclinometers and casing

Tiltmeters and tilt systems

BCS tunnel convergence system

Piezometers and pressure cells

Extensometers & settlement systems

Strain gauges & load cells

Real-time data acquisition & reporting