Underground explorers

Founded in Australia, we consult on major infrastructure projects across the globe.

What we do

What we do

Surex Surveyors are industry leaders in tunnel surveying and underground navigation technology. We provide public and private sector clients with a wide range of professional surveying services and innovative solutions to industry problems.

Our experience

Tunnel boring machine (TBM) surveying

With specialised skill sets and experience in open (hard-rock), single shield and double shield TBMs, we cover all aspects of TBM service including segment and mould measurements and gyroscope surveys.


Surex has comprehensive experience in surveying Roadheader Tunnels. From maintaining guidance systems in excavation and tunnel support, through to final tunnel lining and fitout.

Pipe jacking

Surex supplies specialised surveying for trenchless, straight and curved tunnels. Laser Guided for short straight tunnels, or Gyroscope and VMT SLS Guidance systems for long, curved tunnels.

Project Control Network and Gyroscope Surveys

With the experience of supplying project control on a variety Australia’s largest infrastructure projects, Surex will establish accurate control to project specifications and requirements.

Underground navigation

Experience of various guidance systems and specialised surveying techniques allows Surex to provide confidence in underground navigation through all facets of tunnelling.


Surex provides service in various forms of monitoring including real-time, automated, conventional 3D and settlement.

Our locations