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.