TerraFlow Geomatics has built a comprehensive surface height management system.

The tool enables a user to upload an engineering design file that defines the three dimensional surface, inclusive of all heights and angles that need to be targeted.

This data is then downloaded directly to the handheld for in field data processing.  As the site individual walks across the site, the system continuously compares the height of the GPS antenna vs the surface being targeted.

The key benefit is the user is able to analyze both cut & fill as well as angles in real time.