Products
- Concrete
  - Flex NX
    - Flex NX
      Flex NX®, powered by Nexus™ is the industry’s most powerful and complete concrete scanning system. Use Flex NX™ on its own, or pair an NX wireless satellite antenna to be ready for any jobsite challenge.
  - Flex LT
    - Flex LT
      Flex LT, powered by Nexus, is GSSI’s newest handheld concrete scanning system. This system is a perfect solution for contractors who need to locate and mark targets with speed and precision, without sacrificing quality or budget.
  - NX25
    - NX25
      Scan hard to reach areas, walls and ceilings with the NX25 antenna. This antenna is lightweight, compact and perfect for you to scan, mark and go.
  - NX15
    - NX15
      The NX15 antenna is perfect for any situation where you need a combination of resolution and depth.
  - Flex Product Selector
- Utility
  - UtilityScan Pro
    - UtilityScan Pro
      The UtilityScan Pro is a versatile utility locating system based on the SIR 4000, and offers several options for customization.
  - UtilityScan
    - UtilityScan
      UtilityScan is an indispensable tool for utility locating professionals around the world to easily and accurately map utilities in real-time.
  - UtilityScan DF
    - UtilityScan DF
      The UtilityScan DF incorporates our innovative dual-frequency digital antenna (300/800 MHz) and a touchscreen interface to view shallow and deep targets simultaneously in a single scan.
- Transportation
  - RoadScan
    - RoadScan
      The RoadScan™ 30 system is based on the SIR 30 and provides users with an effective tool for quickly determining pavement layers at high speeds.
  - PaveScan RS
    - PaveScan RS
      Achieve optimal asphalt density with PaveScan RS.
  - PaveScan® MDM
    - PaveScan® MDM
      PaveScan Mix Design Module (MDM) is a powerful new tool for QA/QC labs.
  - PaveScan RDM® 2.0
    - PaveScan RDM® 2.0
      The PaveScan RDM uses the dielectric measurements of new pavement to determine pavement quality and uniformity.
  - BridgeScan
    - BridgeScan
      The BridgeScan™ is a complete, affordable GPR system that is an effective tool for quickly determining the condition of aging bridge decks.
- GS Series
  - 200 HS Antenna
    The 200 HS digital, wireless antenna is ideal for geophysical, geotechnical, and environmental applications that require high reliability under challenging survey conditions.
- SIR Systems
  - SIR 4000
    - SIR 4000
      The SIR® 4000 is GSSI’s first high-performance GPR data acquisition system designed to operate with analog and digital antennas.
  - SIR 30
    - SIR 30
      The SIR® 30 is the next-generation multi-channel GPR control unit. This system can collect up to eight channels of data simultaneously with uncompromised performance.
- Antennas
- Software
  - GSSI Fusion
    - GSSI Fusion
      GSSI Fusion is an easy-to-use reporting tool for professional results from the field.
  - RADAN
    - RADAN
      RADAN® is GSSI's state-of-the-art post-processing software. With its modular design, this program allows users to select the processing functions that best suit their professional needs.
  - Geolitix
    - Geolitix
      Geolitix was designed to simplify and automate nearly every step involved in GPR project workflows.
- Accessories
- Legacy Products
- View All

Not sure which product is right for you? Let us help you decide »

Solutions
- Concrete Inspection
  - Concrete Inspection
    Cutting and coring experts and construction professionals require a reliable, non-destructive solution to assess concrete and concrete structures.
- Utility locating
  - Utility locating
    Utility locators, construction professionals, environmental firms and land surveyors need to know about underground assets prior to digging and trenching efforts.
- Transportation
  - Transportation
    Highway professionals, contractors and engineers use GPR to measure asphalt thickness, compaction, and structural integrity with GPR with accurate real-time data.
- Environmental
  - Environmental
    The key to a comprehensive environmental assessment is the subsurface investigation.
- Geology & Geophysics
  - Geology & Geophysics
    Ground penetrating radar (GPR) offers an accurate, non-destructive solution to mapping the subsurface of the earth.
- Archaeology & Forensics
  - Archaeology & Forensics
    Archaeologists and remote sensing specialists around the world rely on GSSI ground penetrating radar as a key tool for non-invasive site investigation.
- Photo Gallery
- View All

GSSI Training Events

Nashua, NH

40 Simon Street
Nashua, NH 03060-3075 United States Get Directions

603-893-1109

https://www.geophysical.com/

Training Events at this location

September 2025
Flex NX

Sep 3, 2025 @ 9:00 am - 4:00 pm

Nashua, NH 40 Simon Street, Nashua, NH, United States

NH: Flex NX is a one-day class designed for GSSI’s cutting-edge concrete scanning system.
UtilityScan Pro: SIR 4000

Sep 2, 2025 @ 9:00 am - Sep 3, 2025 @ 4:00 pm

Nashua, NH 40 Simon Street, Nashua, NH, United States

Nashua, NH

NH: This class is a two-day introductory course designed for users of the SIR 4000 based UtilityScan system.
August 2025
Specialized Class: GPR For Archaeology

Aug 19, 2025 @ 9:00 am - Aug 20, 2025 @ 4:00 pm

Nashua, NH 40 Simon Street, Nashua, NH, United States

NH: This advanced two-day class will cover use of GPR in archaeology. Please check prerequisites.
Flex NX

Aug 6, 2025 @ 9:00 am - 4:00 pm

Nashua, NH 40 Simon Street, Nashua, NH, United States

NH: Flex NX is a one-day class designed for GSSI’s cutting-edge concrete scanning system.
July 2025
UtilityScan Pro: SIR 4000

Jul 10, 2025 @ 9:00 am - Jul 11, 2025 @ 4:00 pm

Nashua, NH 40 Simon Street, Nashua, NH, United States

Nashua, NH

NH: This class is a two-day introductory course designed for users of the SIR 4000 based UtilityScan system.
Flex NX

Jul 10, 2025 @ 9:00 am - 4:00 pm

Nashua, NH 40 Simon Street, Nashua, NH, United States

NH: Flex NX is a one-day class designed for GSSI’s cutting-edge concrete scanning system.