geodetic survey marker set in a pavement.

accuracy alignment angle asphalt black bolt cartographer cartography centre circle cushion deformation distance engineer faded geodesist geodesy geodetic geodetics gepdetic gis ground icon instrument land leidschendam level location map marker marking marks measure measurement metal nail netherlands object pavement paving pin point polar positioning precise readymade round set spike spot stones street survey surveying surveyor system target tarmac technology topography white worn