Surveyed Station stationType extStationType refinedStationType refinedExtStationType POSC 1.0 geodetic point A point determined by a geodetic survey. satellite point A point determined by a satellite, GPS, survey. inertial point A point determined by an inertial system survey. benchmark A relatively permanent metal tablet or marker embedded in a fixed object indicating a precisely determined elevation and/or location. surveyed unit A location determined from a ground survey. uphole weathering zone base permanent mark