# Your drone survey was only as good as the intern placing the markers - slug: your-drone-survey-was-only-as-good-as-the-intern-placing-the-markers - date: 2026-03-31 - category: Robotics Swiss construction giant WALO has run monthly GCP-free surveys over a 50-acre earthworks site since adopting Wingtra. Field time dropped from 4 hours to 40 minutes per site — and the accuracy numbers actually hold. ---