Geotechnical and Environmental Products

Our Business

We design, manufacture, and supply a wide range of instruments and equipment needed by geotechnical and environmental professionals. In addition, we offer services related to our products, including training and technical support, equipment rentals, repair and calibration.

Durham Geo Slope Indicator is a well-respected brand with instruments integrated in the measurement schemes for some of the world's most important construction projects.
Our expertise is the result of many years of experience. Our geotechnical instruments have been manufactured under the Slope Indicator name since 1958; our materials testing equipment, originally under the Brainard Kilman name, since 1965; and our environmental pumps, since 1990.

Capabilities Brochure
ISO certificate


Our Profile

  • Offices in the USA, Canada,¬†Australia and China.
  • Distributors in 33 countries.
  • Ninety Employees Recognized leader in geotechnical instrumentation.
  • Approximately half of all sales generated from international business.
  • Expertise in wireless remote data acquisition and control.

Our Customers

DGSI's customers include consulting engineers and scientists, earth and civil contractors, universities, government entities, research laboratories and civil and environmental construction companies and are spread across all states in the USA and more than 50 countries.

Our Customers

Our Manufacturing Operations

  • Manufacturing operations in Stone Mountain, Georgia (30,000 sq. ft.(2,787m2)) and Mukilteo, Washington(22,000 sq. ft.(2,044m2)).
  • 11,000 orders per year involving more than 15,000 part numbers.
  • Current ISO 9001:2008 Certificate
  • Research and development in both facilities is carried out by our team of electronic, mechanical, and software engineers.

What Makes Us Different?

  • Single-source supplier for geotechnical and environmental products
  • Direct technical support for quick, accurate answers.
  • Responsive, dedicated in products and services.
  • Consistent quality in products and services.
  • Ability to provide specialty products.
  • Rental and calibration services.
  • Useful and informative web sites.