A hand held field rover survey apparatus, comprising: a support rod having a lower end for engaging a ground surface; a position sensor (S100), the position sensor being mounted on the support rod ; and a control unit communicated with the position sensor (S100), the control unit including: a shape selection component configured to select a geometrical shape for a structure to be produced on the ground surface or for the ground to which changes are to be made; and a position data determination component configured to determine position data by using the position sensor to define a surveyed position of the position sensor in relation to a reference system (X, Y, Z), characterized in that the control unit further includes: a curve data determination component configured to determine curve data for reproducing the selected geometrical shape for the structure to be produced on the ground surface or for the ground to which changes are to be made in a selected, desired location and orientation in the reference system (X, Y, Z), the curve data determination component being configured to determine said curve data taking said selected geometrical shape and using information representing the selected, desired location in the reference system of at least two identifiable points of said selected shape or of one point and the orientation of said selected shape, wherein said information is provided by surveying said desired location of those points with the hand held field rover, to create said curve data completely identifying the location and orientation of said selected geometrical shape in the reference system (X, Y, Z). a support rod having a lower end for engaging a ground surface; a position sensor (S100), the position sensor being mounted on the support rod ; and a control unit communicated with the position sensor (S100), the control unit including: a shape selection component configured to select a geometrical shape for a structure to be produced on the ground surface or for the ground to which changes are to be made; and a position data determination component configured to determine position data by using the position sensor to define a surveyed position of the position sensor in relation to a reference system (X, Y, Z), a shape selection component configured to select a geometrical shape for a structure to be produced on the ground surface or for the ground to which changes are to be made; and a position data determination component configured to determine position data by using the position sensor to define a surveyed position of the position sensor in relation to a reference system (X, Y, Z), characterized in that the control unit further includes: a curve data determination component configured to determine curve data for reproducing the selected geometrical shape for the structure to be produced on the ground surface or for the ground to which changes are to be made in a selected, desired location and orientation in the reference system (X, Y, Z), the curve data determination component being configured to determine said curve data taking said selected geometrical shape and using information representing the selected, desired location in the reference system of at least two identifiable points of said selected shape or of one point and the orientation of said selected shape, wherein said information is provided by surveying said desired location of those points with the hand held field rover, to create said curve data completely identifying the location and orientation of said selected geometrical shape in the reference system (X, Y, Z). <EOS>