TGM Spigot Control
  
The installation of track machine guidance (TMG) spigot control is an integral par of many large track survey or tunnel survey projects. We have the equipment and experience to install these spigots in walls or gantries with these installations constructed to precise specifications and made to last.

Once installation is complete, we use our fleet of GPS receivers and robotic total stations to rigorously coordinate the spigot positions. Raw survey observations are collated and checked in our least squares network adjustment program.

We have also been called upon to perform check observations and validation surveys and reports on spigots coordinated by others.