© 2011 CMCI. Global Positioing System GPS equipment has changed the way Surveyors operate in the field. With distinct advantages in speed and accuracy over conventional survey methods, GPS is a rapidly growing technology for Surveyors to aquire accurate positioning. With many different accuracies and price ranges GPS equipment is very practical for a multitude of surveying projects. GIS or Geographic Information System GPS is a lower accuracy attribute based data logging system for collecting spatial data for a GIS database. We carry the full line of Topcon GPS receivers for any job or any budget. Contact us for an on site demonstration today. Topcon GRS-1 for GIS Topcon GMS-2