What Durham Geo Slope Indicator does

Durham Geo Slope Indicator (DGSI), legally Durham Geo Enterprises, Inc., is a Stone Mountain / Tucker, Georgia-based geotechnical instrumentation company founded in 1960 and operating as a subsidiary of Nova Metrix. The company designs, manufactures, and sells precision sensors and monitoring systems — including MEMS and electrolytic inclinometers, vibrating-wire piezometers and strain gauges, tiltmeters, extensometers, pressure cells, and supporting accessories such as inclinometer casings and grout valves — used to measure ground movement, structural deformation, pore pressure, and environmental parameters on infrastructure, mining, energy, and construction projects. Its product stack spans three categories: geotechnical instrumentation (Digitilt AT portable survey system, GeoFlex in-place MEMS system, Serial HD In-Place Inclinometers, EL and MEMS Tiltmeters, Goodman Jack rock deformability tool), materials testing equipment (sieve shakers, load frames, compaction testers, penetrometers, asphalt, grout, and concrete lab equipment), and environmental products (remediation pumps and low-flow groundwater sampling). The data acquisition layer integrates with Campbell Scientific loggers and GTecLink wireless nodes and feeds cloud/web platforms including Sensly and Atlas for real-time visualization and alarm-based monitoring.

DGSI monetizes primarily through one-time hardware sales via its 24/7 e-commerce shop and a global distributor network, supplemented by professional services for repair, calibration, and on-site instrumentation training. Pricing is quote-based with no public list, consistent with custom-engineered enterprise and government transactions; products such as AT reels and probes carry 2–3 week lead times. Customer segments center on geotechnical and structural engineering consultancies and materials testing laboratories (primary), with secondary reach into environmental remediation firms and oil & gas / utility pipeline operators. The go-to-market combines direct enterprise field sales, a global distributor footprint spanning the US, UK, Germany, Portugal, and Malaysia, and a technical content engine (YouTube, LinkedIn, datasheets, case studies). Marquee reference projects include Wyoming DOT's Snake River Canyon highway reconstruction, the Petronas Twin Towers, Deutsche Post's 48-story headquarters, Williams Gas Pipeline's Douglas Pass monitoring, the Globe Theatre London, and Portcullis House UK, signaling durable demand from government infrastructure and iconic private construction.

Name

Durham Geo Slope Indicator

Legal name

Durham Geo Enterprises, Inc.

Website

https://durhamgeo.com

Company type

Private

Founded year

1960

Operating status

Operating

Headcount range

51–100 employees

Short description

Durham Geo Slope Indicator (DGSI) designs, manufactures, and sells geotechnical instrumentation, materials testing equipment, and environmental monitoring products for engineers, materials testing labs, and government infrastructure projects worldwide.

Ownership category

akta.pro rank

Product category

Geotechnical Instrumentation and Monitoring Equipment

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Testing Laboratories and Services (54138)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Services-Testing Laboratories (8734)

akta.pro primary industry

Geotechnical Instrumentation & Monitoring (Settlement, Inclinometers, Piezometers) (IMAFAOAH)

akta.pro secondary industries

Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC), Metrology, Calibration & Testing Equipment (Balances, pH/DO, Standards) (HLAGAIAL), Geotechnical Site Investigation & Engineering Geology (Borings, Lab Testing) (EUAHAFAE)

Keywords

• Geotechnical instrumentation
• Materials testing equipment
• Inclinometer systems
• Structural monitoring sensors
• Environmental remediation equipment

Headquarters

HQ city

Stone Mountain

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Technology or R&D, Personnel, Operations, Marketing or Sales

Revenue model

1. Geotechnical Instrumentation Products: Sale of precision instruments including inclinometers, piezometers, settlement systems, extensometers, tiltmeters, strain gauges, and data loggers for monitoring geotechnical and structural parameters in construction and infrastructure projects.
2. Materials Testing Equipment: Sale of testing equipment for aggregates, concrete, soil, asphalt, and grout including sieves, load frames, compaction testers, and sample preparation equipment.
3. Environmental Products: Sale of groundwater remediation equipment including submersible pumps, active and passive remediation systems, and sampling equipment.
4. Repair and Calibration Services: Technical services including equipment repair, calibration, and on-site instrumentation training courses.
5. Rental Services: Equipment rental services for geotechnical monitoring instruments.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Durham Geo Slope Indicator (DGSI) manufactures and sells precision geotechnical instrumentation (inclinometers, piezometers, tiltmeters, settlement systems, extensometers, pressure cells, strain gauges, data loggers) and materials testing equipment (sieves, load frames, compaction testers, sample preparation equipment), along with environmental groundwater remediation pumps and sampling equipment. The company also provides repair, calibration, rental, and on-site instrumentation training services, supported by proprietary software platforms including Sensly and DigiPro2.

Product overview

DGSI offers a unified portfolio of geotechnical instrumentation, materials testing, and environmental monitoring products organized around three core divisions. The geotechnical instrumentation suite centers on inclinometer systems (Digitilt AT System for portable surveys, GeoFlex System for continuous real-time monitoring, and Serial HD In-Place Inclinometers for fixed installations) complemented by tiltmeters (EL Tiltmeter with electrolytic sensors and MEMS Tiltmeter with wider range), the Goodman Jack for rock deformability testing, and supporting accessories including inclinometer casing, grout valves, and data recorders (VW Data Recorder, VW Analyzer, EL/MEMS Data Recorder, GeoFlex Indicator). The data acquisition ecosystem includes Gateway and GTecLink wireless nodes (Digital Node, Vibrating Wire Node 1/5 Channel, Analog Node) that connect to cloud platforms including Sensly and Atlas for web-based monitoring. Materials testing products cover aggregates, concrete, soil, asphalt, and grout testing including Static Cone Penetrometer, Gilmore Apparatus, and Cube Mold Set. Environmental products include remediation pumps and groundwater sampling equipment. Services include repair, calibration, and on-site training.

Differentiator

Problem solved

Functional benefit

Brands

• DGSI: Primary commercial brand name for Durham Geo Slope Indicator's geotechnical instrumentation and materials testing products.
• GeoFlex
• Digitilt AT System
• Sensly

Products and services

• Geotechnical Instrumentation Comprehensive range of geotechnical and structural monitoring instruments including inclinometers, piezometers, settlement systems, extensometers, pressure cells, and data loggers for monitoring tilt, displacement, pressure, and strain in civil engineering applications.
• Materials Testing Equipment Equipment for testing aggregates, concrete, soil, asphalt, and grout including sieve shakers, sample splitters, compaction testers, load frames, and laboratory equipment for construction materials analysis.
• Environmental Products Pumps and supplies for groundwater remediation, recovery of landfill leachates and gases, low-flow sampling equipment, and groundwater purging systems.
• Digitilt AT System Modern digital inclinometer system featuring a MEMS-based probe, Bluetooth-enabled reel, Android tablet reader app, and DigiPro2 PC software for surveying inclinometer casings to measure subsurface ground deformation in landslides, embankments, dams, and excavations.
• GeoFlex System Real-time in-place inclinometer system using a string of closely spaced MEMS sensors that continuously monitors ground movement without requiring an on-site operator. Supports up to 200 sensor nodes in 85mm casing or 50 nodes in 70mm casing for landslide monitoring, tunnel construction, and embankment settlement tracking.
• Horizontal GeoFlex System Horizontal variant of the GeoFlex system designed for measuring settlement or heave profiles under storage tanks, embankments, dams, and landfills. Features real-time monitoring with no on-site operator required.
• GeoFlex Indicator Portable readout device for reading GeoFlex in-place MEMS inclinometers during installation and commissioning. Operates via iOS or Android app through Bluetooth connectivity with over 16 hours battery life.
• EL Tiltmeter High-resolution narrow-angle tilt sensor using electrolytic technology for monitoring changes in inclination of structures. Features ±40 arc minute range with 1 arc second resolution using CR1000 data logger. Weatherproof aluminum enclosure for monitoring retaining walls, piers, and piles.
• MEMS Tiltmeter Compact waterproof tiltmeter with ±10° range using MEMS sensor technology for monitoring rotation of retaining walls, piers, and piles. Includes biaxial version with ±10° or ±20° range, stainless steel housing waterproof to 20m depth.
• Serial HD In-Place Inclinometers Fixed-chain sensor system for continuous real-time monitoring of subsurface deformation. Features MEMS sensors with ±10° range, configurable gauge lengths, and single-cable installation for landslide monitoring and construction control.
• Inclinometer Casing Special purpose pipe for inclinometer installations available in QC, Standard, EPIC, CPI, and Shear Wire configurations. Maintains access for probes, controls orientation via internal grooves, and conforms to ground movement. Available in 48mm, 70mm, and 85mm diameters.
• Goodman Jack Hydraulic borehole tool for estimating rock mass deformability in-situ. Available in 12-piston hard rock model (max 703kN force) and 3-piston soft rock model (max 419kN force) for 76mm boreholes. Includes LVDT sensors and displacement indicator.
• VW Analyzer Field-ready vibrating wire sensor reader using VSPECT technology for noise-immune measurements. Features integrated GPS, color display, PDF report generation, and CSV output. Reads all vibrating wire sensors including strain gages, piezometers, and load cells.
• Sensly Data Management Platform Cloud-based data management and visualization platform for geotechnical, structural, and environmental monitoring. Provides real-time actionable sensor data and alerts with alarm condition monitoring and automatic data plotting.
• DigiPro2 Software Desktop software for managing inclinometer data from Digitilt AT and Digitilt Classic systems. Generates plots and reports, provides systematic error corrections, and creates QR codes for survey initiation.
• Gateway (Wireless Data Acquisition) Wireless data acquisition and monitoring gateway for remote infrastructure monitoring. Features ISM Sub 1 GHz band, integrated 3G modem, GPS, IP67 weather protection, and 48V DC PoE power. Connects GTecLink wireless nodes to cloud services.
• Repair and Calibration Services Technical services including repair and calibration of geotechnical instrumentation. Skilled technicians ensure equipment functions correctly and provides accurate, repeatable data.
• On-site Instrumentation Training Field training courses covering inclinometer operation, data reduction, and error correction techniques for geotechnical instrumentation.

Named customers9 records

Segments4 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration10 records

Feature5 records

Partnerships

Two partnerships are on record, tiered core.

• Campbell ScientificcoreTechnology or IntegrationDGSI products including GeoFlex systems, data loggers, and sensors are designed to integrate with Campbell Scientific data loggers (CR6, CR1000Xe, CR350). Campbell Scientific loggers are recommended as the primary data acquisition system for DGSI monitoring solutions.
• GTecLinkcoreTechnology or IntegrationGTecLink data loggers and wireless monitoring nodes (Digital Node, Analog Node, Vibrating Wire Node, GeoFlex Node) are offered as part of DGSI's wireless monitoring solutions. These products enable easy wireless data monitoring as an alternative to Campbell Scientific loggers.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Sisgeo: Sisgeo supplies digital inclinometers, tiltmeters, and vibrating-wire sensors for geotechnical and structural monitoring, with a comparable product portfolio and target customer base as DGSI.
• Encardio Rite: Encardio Rite produces inclinometers, piezometers, extensometers, strain gauges, and data loggers for geotechnical monitoring, offering a directly comparable product portfolio and serving similar infrastructure markets as DGSI.
• Roctest: Roctest manufactures vibrating wire and fiber optic sensors, inclinometers, and load cells for geotechnical and structural health monitoring with a similar focus on dams, tunnels, and mines as DGSI.
• Geosense: Geosense manufactures vibrating wire sensors, in-place inclinometers, and data acquisition systems for geotechnical monitoring, overlapping with DGSI's core inclinometer and piezometer product lines.
• RST Instruments: RST Instruments manufactures inclinometers, extensometers, piezometers, and data loggers for geotechnical monitoring, competing head-to-head with DGSI in mines, dams, tunnels, and transportation projects.
• Campbell Scientific: Campbell Scientific manufactures data loggers and measurement systems that are the recommended primary data acquisition platform for DGSI's geotechnical sensors, making them a closely integrated partner/peer in the same monitoring stack.
• Geokon: Geokon is a direct competitor specializing in vibrating wire sensors, inclinometers, piezometers, and load cells used in geotechnical and structural monitoring, serving the same engineers and project types as DGSI.
• Soil Instruments: Soil Instruments provides inclinometers, piezometers, extensometers, and settlement systems for geotechnical and structural monitoring, with a product line and customer base that directly mirror DGSI's.

Broad incumbents

• Keller Group: Keller Group is a global geotechnical engineering contractor that operates multiple instrumentation brands (including former RST and PRC), making it a much larger incumbent that competes with DGSI in foundation and slope monitoring.

Others

• HMA Wear Solutions: HMA Group / Nova Metrix sibling companies provide adjacent geotechnical, materials testing, and instrumentation products, making them related-party peers within the same corporate family as DGSI.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC9hoQgQXaer_JYzt84Ns76Q
• LinkedInlinkedin.com/company/durham-geo-slope-indicator
• Xx.com/SlopeIndicator

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Durham Geo Slope Indicator