Can you determine the coordinates of your five boundary points? I have not worked with FreeCAD yet, but there should be something like snap to point, so that the boundary point coordinates can be captured exactly and the values can be read in the status bar. Maybe you can also display the exact coordinates of the start and end points via the properties of the boundary lines (I know this from AutoCAD). If you manage that, you could enter the east and north values here. If you do not want to be located, you should reduce the values by a fixed amount. Point 1: 397955.66, 5731598.11 -> 955.66, 598.11 Point 2: 398010.54, 5731591.92 -> 1010.54, 591.92
