Terramodel Supervis Terramodel Supervis from Geocomp SystemsTerramodel Supervis from Geocomp Systems enables a site supervisor to view the design of a road project relative to the current 3D GPS location. Typical Images Supervis on a computer mounted in a car GPS Information screenshot A channel shown in Terramodel Visualizer Please contact Jerry Cresp at Geocomp Systems for any questions you may have about Terramodel Supervis.See our contact details page.