Triangulation methods were by now well established for local mapmaking, but it was only towards the end of the 18th century that other countries began to establish detailed triangulation network surveys to map whole countries.
至此，三角量測法被良好地建立及運用在區域性的地圖製作，但只有到了18世紀末，其他國家才開始建立詳細的三角量測網絡調查，以建立全國性地圖。